We don't normally need this on x86 unless the size of SPI flash devices is
larger than 16MB. This can be enabled by particular SoCs as needed, since
it adds to code size.
Drop the default enabling of this option on x86.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
At present we have to have an xfer() method even if it does nothing. This
is not correct, so fix it.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
At present if CONFIG_SPL_GPIO_SUPPORT is enabled then the GPIO uclass
is included in SPL/TPL without any control for boards. Some boards may
want to disable this to reduce code size where GPIOs are not needed in
SPL or TPL.
Add a new Kconfig option to permit this. Default it to 'y' so that
existing boards work correctly.
Change existing uses of CONFIG_DM_GPIO to CONFIG_IS_ENABLED(DM_GPIO) to
preserve the current behaviour. Also update the 74x164 GPIO driver since
it cannot build with SPL.
This allows us to remove the hacks in config_uncmd_spl.h and
Makefile.uncmd_spl (eventually those files should be removed).
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
These functions are CPU-related and do not use driver model. Move them to
cpu_func.h
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
This function belongs in time.h so move it over and add a comment.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Add the SPI_FLASH_BAR for the ESPI controller of FSL, this entry
is missed by
commit 6d82517836 ("configs: Don't use SPI_FLASH_BAR as default")
Signed-off-by: Xiaowei Bao <xiaowei.bao@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
On x86 platforms the SPI flash can be mapped into memory so that the
contents can be read with normal memory accesses.
Add a new SPI method to find the location of the SPI flash in memory. This
differs from the existing device-tree "memory-map" mechanism in that the
location can be discovered at run-time.
Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
- bmips: various small fixes
- mtmips: add new drivers for clock, reset-controller and pinctrl
- mtmips: add support for high speed UART
- mtmips: update/enhance drivers for SPI and ethernet
- mtmips: add support for MMC
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Merge tag 'mips-pull-2019-10-25' of git://git.denx.de/u-boot-mips
- bmips: add BCRM NAND support for BCM6368, BCM6328, BCM6362 and BCM63268 SoCs
- bmips: various small fixes
- mtmips: add new drivers for clock, reset-controller and pinctrl
- mtmips: add support for high speed UART
- mtmips: update/enhance drivers for SPI and ethernet
- mtmips: add support for MMC
Currently this driver uses a different way to implement the spi xfer,
by modifying some fields of two registers, which is incompatible with the
MTK's original SDK linux driver. This will cause the flash data being
damaged by the SDK driver.
This patch lets the mt7621_spi_set_cs() restore the original register
fields after cs deactivated.
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
The mt7621 spi controller supports continuous generic half-duplex spi
transaction. There is no need to cache xfer data at all.
To achieve this goal, the OPADDR register must be used as the first data
to be sent. And follows the eight generic DIDO registers. But one thing
different between OPADDR and DIDO registers is OPADDR has a reversed byte
order.
With this patch, any amount of data can be read/written in a single xfer
function call.
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
This patch lets the spi driver to use clock provided by the clk driver
since the new clk-mt7628 driver provides accurate sys clock frequency.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Disable and free clock when remove driver.
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
SPI_SUNXI driver is fully dm-aware and the Allwinner
architecture kconfig would have logic to enable the
DM_SPI. So, select default spi sunxi driver for
sunxi architecture.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
We need distinguish the following two situations in various SPI APIs:
- given chip select num is invalid
- given chip select num is valid, but no device is attached
Currently -ENODEV is returned for both cases.
For the first case, it's more reasonable to return -EINVAL instead of
-ENODEV for invalid chip select numbers.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> # SoPine
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
If an SPI controller driver does not implement ops->cs_info, that
probably means any chip select number could be valid, hence let's
return 0 for spi_cs_info().
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> # SoPine
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
When CONFIG_OF_PRIOR_STAGE is enabled, this workaround was needed
before device_bind_common assigned request numbers sequentially in the
absence of aliases.
Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Simon Glass <sjg@chromium.org>
The Broadcom ARM implementations do not yet have a clock framework so
one can use a fixed clock as the root clock of the hsspi block. The
fixed clock does not have an "enable" routine, since it's always
enabled. So when we hit this issue, getting an ENOSYS return, do not
bail but continue initialization.
Similarly the block might already have been out of reset, say, when
we are booting from a SPI device. So if the reset signal is not configured
in the device tree, do not bail out and instead skip deasserting the reset.
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Make the driver compatible with both big and little endian SOCs.
Replace big-endian calls with their raw equivalents, expect for
writing the command to FIFO. That still has to be in big-endian
format.
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This IP exists in both MIPS and ARM cores, so we also
allow to use this driver on bcm6858 and bcm63158.
Signed-off-by: Kursad Oney <kursad.oney@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
The write data size can be overwritten by writing to the IDATSZ
field of IPCR register. Since the driver always updates the IDATSZ
in page program operation. Set the LUT data size to 0 to align
the codes with iMX.
Signed-off-by: Ye Li <ye.li@nxp.com>
On latest iMX platforms like iMX7D/iMX6UL/iMX8MQ, the QSPI controller
is updated to have TDH field in FLSHCR register. According to reference
manual, this TDH must be set to 1 when DDR_EN is set. Otherwise, the TX
DDR delay logic won't be enabled.
Another issue in DDR mode is the MCR register will be overwritten in
every read/write/erase operation. This causes DDR_EN been cleared while
TDH=1, then no clk2x output for TX data shift and all operations will
fail.
Signed-off-by: Ye Li <ye.li@nxp.com>
After this patch the mxs_spi.c DM/DTS driver can be used at early SPL to
read payload from SPI-NOR memories.
It was necessary to adjust its name to 'fsl_imx_2{38}_spi' to match
requirements for SPL_OF_PLATDATA usage.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Without this change the DM/DTS version of mxs_spi driver doesn't reset the
SPI IP block in probe.
As a result this driver (when used solely on U-Boot proper) relies on reset
performed by mxs spi driver in SPL.
In the use case where eMMC is used in SPL as a boot primary device, the
mxs_reset_block() is not called at all and DM/DTS aware SPI driver in
U-Boot proper is malfunctioning.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
This change initializes proper member of struct driver -
platdata_auto_alloc_size instead of priv_auto_alloc_size, which is setup
twice.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
Add support for SPI synchronous write followed by read,
this is common interface call from spi-nor to spi drivers.
Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Adam Ford <aford173@gmail.com> #da850-evm
MXS_SPI driver now partially converted into driver-model,
so unmark the DEPRECATED option for the same.
Signed-off-by: Lukasz Majewski <lukma@denx.de>
[jagan: update the commit message]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
In case spi_get_bus_and_cs callback is used, spi bus is first probed
then slave devices are probed. To avoid a data abort in soft_spi probe
function, we need to check that (slave != NULL).
If slave is NULL, cs_flags and clk_flags will be initialized with
respectively GPIOD_ACTIVE_LOW and 0.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
The prescaler value computation can yield wrong result if given 0x1f at
the beginning: the value is computed to be 0x20, but the maximum value
the register can hold 0x1f, so the actual stored value in this case is
0, which is obviously wrong.
Set the upper bound of the value to 0x1f with the min macro.
Signed-off-by: Marek Behún <marek.behun@nic.cz>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
With the introduction of the new spi-mem model operations changed
slightly. The new spi-mem operations make things a bit easier to
handle for ich-spi flash interface. This patch converts the ich-spi
driver by using spi-mem operations.
Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested on Intel CrownBay and MinnowMax
Tested-by: Bin Meng <bmeng.cn@gmail.com>
[bmeng: fix compiler warnings when building the driver for 64-bit]
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Since u-boot has added the spi-mem framework and replaced
the spi-nor framework, the mtk_qspi is no longer compatible
with the new spi-nor driver.
Remove this driver along with replacing config item
with new mtk spi-nor driver.
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
[jagan: squash related changes and update commit message]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This patch adds SiFive SPI driver. The driver is 100% DM driver
and it determines input clock using clk framework.
The SiFive SPI block is found on SiFive FU540 SOC and is used to
access flash and MMC devices on SiFive Unleashed board.
This driver implementation is inspired from the Linux SiFive SPI
driver available in Linux-5.2 or higher and SiFive FSBL sources.
Signed-off-by: Bhargav Shah <bhargavshah1988@gmail.com>
Signed-off-by: Anup Patel <anup.patel@wdc.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Tested-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Use readl_poll_timeout instead of explicit calculation
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
During QSPI reads, current is_controller_busy function sporadically
fails with -ETIMEDOUT due to fixed number of 5 test loops. Using
timer functions to wait 1000 us instead will fix this.
Signed-off-by: Thomas Schaefer <thomas.schaefer@kontron.com>
Reviewed-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
When slave drivers don't set the max_read_size, the spi-mem should directly
use data.nbytes and not limit to any size. But current logic will limit to
the max_write_size.
Signed-off-by: Ye Li <ye.li@nxp.com>
Acked-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This patch solves the following warnings:
drivers/spi/stm32_spi.c: In function 'stm32_spi_write_txfifo':
drivers/spi/stm32_spi.c:116:20: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
if (priv->tx_len >= sizeof(u32) &&
^~
drivers/spi/stm32_spi.c:122:27: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
} else if (priv->tx_len >= sizeof(u16) &&
^~
drivers/spi/stm32_spi.c: In function 'stm32_spi_read_rxfifo':
drivers/spi/stm32_spi.c:150:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
(priv->rx_len >= sizeof(u32) || (sr & SPI_SR_RXWNE))) {
^~
drivers/spi/stm32_spi.c:156:21: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
(priv->rx_len >= sizeof(u16) ||
^~
drivers/core/simple-bus.c:15:12: warning: no previous prototype for 'simple_bus_translate' [-Wmissing-prototypes]
fdt_addr_t simple_bus_translate(struct udevice *dev, fdt_addr_t addr)
^~~~~~~~~~~~~~~~~~~~
drivers/spi/stm32_spi.c: In function 'stm32_spi_set_speed':
drivers/spi/stm32_spi.c:335:10: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
div > STM32_MBR_DIV_MAX)
^
drivers/spi/stm32_spi.c:344:19: warning: comparison of unsigned expression < 0 is always false [-Wtype-limits]
if ((mbrdiv - 1) < 0)
^
drivers/spi/stm32_spi.c: In function 'stm32_spi_probe':
drivers/spi/stm32_spi.c:531:16: warning: comparison between signed and unsigned integer expressions [-Wsign-compare]
for (i = 0; i < ARRAY_SIZE(priv->cs_gpios); i++) {
^
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
This patch solves warnings detected by setting W=1 when building.
Warnings type detected:
- [-Wtype-limits]
- [-Wsign-compare]
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
- Minor tracing and PCI improvements
- Various other minor fixes
- Conversion of patman, dtoc and binman to support Python 3
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Merge tag 'dm-pull-9jul19-take2' of https://gitlab.denx.de/u-boot/custodians/u-boot-dm
- Sandbox improvements including .dts refactor
- Minor tracing and PCI improvements
- Various other minor fixes
- Conversion of patman, dtoc and binman to support Python 3
- SPL SATA enhancements to allow booting from RAW SATA device
needed for Clearfog (Baruch)
- Enable SATA booting on Clearfog (Baruch)
- Misc changes to Turris Omnia (Marek)
- Enable CMD_BOOTZ and increase SYS_BOOTM_LEN on crs305-1g-4s
(Luka)
- Enable FIT support for db-xc3-24g4xg (Chris)
- Enable DM_SPI on Keymile Kirkwood board with necessary changes
for this (Pascal)
- Set 38x and 39x AVS on lower frequency (Baruch)
KM Kirkwood boards now implement the driver model for its SPI flash
interface. Therefore, the old board specific claim and release functions
can be deleted. The preprocessor definition CONFIG_SYS_KW_SPI_MPP is yet
unused as well. All its appearances and dependencies are removed in the
kirkwood_spi driver, header files and finally the configuration whitelist.
Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
The weak functions, known from the legacy code, are added to the DM part
as well. For this purpose, the release operation first needs to be
implemented. KM Kirkwood boards will overwrite those weak functions to
change the MPP configuration when claiming/releasing the bus, because the
hardware pins are shared between the SPI NOR and NAND devices.
Signed-off-by: Pascal Linder <pascal.linder@edu.hefr.ch>
Signed-off-by: Holger Brunck <holger.brunck@ch.abb.com>
Signed-off-by: Stefan Roese <sr@denx.de>
In general we should avoid calling malloc() and free() repeatedly in
U-Boot lest we turn it into tianocore. In SPL this can make SPI flash
unusable since free() is often a nop and allocation space is limited.
In any case, these seems no need for malloc() since the number of bytes
is very small, perhaps less than 8.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: d13f5b254a (spi: Extend the core to ease integration of SPI
memory controllers)
Since the SPI nor conversion, 'sf probe' does not work on sandbox. Fix
this by using the expected compatible string in the flash node.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes: cd35365762 (mtd: sf_probe: remove spi-flash compatible)
Backport the driver from linux v5.1-rc5 and adapt it for u-boot.
Tested on sama5d2_xplained Rev B with mx25l25635e spi-nor flash.
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Mark LPC32XX_SSP as DEPRECATED, this so the resulting build shows
warning for deprecated configuration enabled and associated code
will remove in v2019.07 release.
Cc: Albert ARIBAUD <albert.aribaud@3adev.fr>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Acked-by: Sylvain Lemieux <slemieux@tycoint.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
Mark SOFT_SPI as DEPRECATED, this so the resulting build shows
warning for deprecated configuration enabled and associated code
will remove in v2019.07 release.
Cc: Vasily Khoruzhick <anarsoul@gmail.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
Mark SH_SPI as DEPRECATED, this so the resulting build shows
warning for a deprecated configuration enabled and associated code
will remove in v2019.07 release.
Acked-by: Marek Vasut <marex@denx.de>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
Mark MXS_SPI as DEPRECATED, this so the resulting build shows
warning for broken configuration enabled and associated code
will remove in v2019.07 release.
Cc: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <fabio.estevam@nxp.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
[trini: Switch to DEPRECATED]
Signed-off-by: Tom Rini <trini@konsulko.com>
- Add saveenv support for STM32MP1
- Add STM32MP1 Avenger96 board support
- Add SPI driver suport for STM32MP1
- Add watchdog support for STM32MP1
- Update power supply check via USB TYPE-C for STM32MP1 discovery board
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Merge tag 'u-boot-stm32-20190606' of https://github.com/pchotard/u-boot
- Add Ethernet support for STM32MP1
- Add saveenv support for STM32MP1
- Add STM32MP1 Avenger96 board support
- Add SPI driver suport for STM32MP1
- Add watchdog support for STM32MP1
- Update power supply check via USB TYPE-C for STM32MP1 discovery board
in mxc_spi_probe() plat and mxcs pointer are created:
struct mxc_spi_slave *plat = bus->platdata;
struct mxc_spi_slave *mxcs = dev_get_platdata(bus);
which have the same value. Remove plat pointer.
Signed-off-by: Heiko Schocher <hs@denx.de>
Support DM in the MPC8xxx SPI driver, and remove the legacy SPI
interface.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
The comment before the transmission loop in conjunction with the
definition of SPI_TIMEOUT as 1000 implies that the loop is supposed to
have a timeout value of 1000 ms. But since there is no mdelay(1) or
similar in the loop body, the loop just runs 1000 times, without regard
for the time elapsed.
To correct this, use the standard get_timer functionality to properly
time out the loop after 1000 ms.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Decreasing the bit length and increasing the write data pointer should
be done when there are more than 32 bit of data, not 16 bit.
This did not produce incorrect behavior, because the only time where the
two checks produce different outcomes is the case of 16 < bitlen < 32,
and in this case the subsequent transmission is the last one regardless,
hence the additional bit length decrease and write data pointer increase
has no effect anyway.
Still, the correct check is the check for "bitlen > 32", so correct this
behavior.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Minize the time the adapter is disabled (via SPI_MODE_EN
clearing/setting) to just the character length setting, and only set up
the temporary data writing variable right before we need it, so there is
a more clear distinction between setting up the SPI adapter, and setting
up the data to be written.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Instead of having a table right before the code implementing the length
setting for documentation, have inline comments for the if branches
actually implementing the length setting described table's entries
(which is readable thanks to the set_char_len function).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
The variable "char_size" holds the number of bits to be transferred in
the current loop iteration. A better name would be "xfer_bitlen", which
we rename this variable to.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Introduce the to_prescale_mod and set_char_len inline functions to make
the code more readable.
Note that the added "if (bitlen > 16)" check does not change the
semantics of the current code, and hence only preserves the current
error (this will be fixed in a later patch in the series).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
The transmission loop starts with setting some variables, which are only
used inside the loop. Reduce the scope to the loop to make the
declaration and initialization of these variables coincide.
In the case of char_size this also always initializes the variable
immediately with the final value actually used in the loop (instead of
the placeholder value 32).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
We do nothing in the loop if the "not empty" event was not detected. To
simplify the logic, check if this is the case, and skip the execution of
the loop early to reduce the nesting level and flag checking.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Get rid of the is_read variable, and just keep the state of the "not
empty" and "not full" events in two boolean variables within the loop
body.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Instead of having a nested if block, just have two branches within the
overarching if block to eliminate one nesting level.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Accesses to the register map are currently done by directly reading and
writing the structure.
Switch to the appropriate IO accessors instead.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Replace pre-processor defines with proper enums, and use the BIT macro
where applicable.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Replace the function name with a "%s" format string and the __func__
variable in debug statements (as proposed by checkpatch).
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
There are three variables that have camel-case names, which is not the
preferred naming style.
Give those variables more compliant names instead.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
There are some comments on the same line as the code they document. Put
comments above the code lines they document, so the line length is not
unnecessarily increased.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
The function signatures in the driver are quite long as is. Use short
type names (uint etc.) to make them more readable.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Convert 'dw_spi_ofdata_to_platdata' to use 'dev_read_u32_default'
instead of 'fdtdec_get_int' and get rid of DECLARE_GLOBAL_DATA_PTR.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Convert 'cadence_spi_ofdata_to_platdata' to use dev_read_* functions to
read driver parameters and 'dev_read_first_subnode'/'ofnode_read_*' to
read flash (child node) parameters.
Tested on socfpga_socrates (socfpga gen5).
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Like clk_get_by_index, there is requirement for
clk_get_by_index_nodev. In this case to make common
code functionalities for dev and nodev, clk_get_by_index
is trying to get the index of clock by passing ofnode
instead of actual dev like current gpio uclass does.
In these scenarios with current order of include files
the atcspi200_spi driver is unable to find CONFIG_ENV_SIZE.
In file included from arch/nds32/include/asm/u-boot.h:24,
from include/dm/of.h:10,
from include/dm/ofnode.h:12,
from include/clk.h:11,
from drivers/spi/atcspi200_spi.c:9:
include/environment.h:145:19: error: 'CONFIG_ENV_SIZE'
undeclared here (not in a function); did you mean 'CONFIG_CMD_XIMG'?
#define ENV_SIZE (CONFIG_ENV_SIZE - ENV_HEADER_SIZE)
So, fix consists of changing the order of include files
in atcspi200_spi.c to include first common.h file.
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Add ifdeffery to allow operation without the clock framework
enabled. This is required on RZ/A1, as it does not have clock
driver yet.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Chris Brandt <chris.brandt@renesas.com>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
Ocelot
- mt7620: rename arch to more generic name mtmips
- mips: pass initrd addresses via DT as physical addresses
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Merge tag 'mips-pull-2019-05-03' of git://git.denx.de/u-boot-mips
- mscc: small fixes, enhance network support for Serval, Luton and Ocelot
- mt7620: rename arch to more generic name mtmips
- mips: pass initrd addresses via DT as physical addresses
Currently mach-mt7620 contains only support for mt7628. To avoid confusion,
rename mach-mt7620 to mach-mtmips, which means MediaTek MIPS platforms.
MT7620 and MT7628 should be distinguished by SOC_MT7620 and SOC_MT7628
because they do not share the same lowlevel codes.
Dependencies of four drivers are changed to SOC_MT7628 as these drivers
are only used by MT7628.
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
Rockchip use 'arch-rockchip' instead of arch-$(SOC) as common
header file path, so that we can get the correct path directly.
Signed-off-by: Kever Yang <kever.yang@rock-chips.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
To support unaligned output buffers (i.e. 'in' in the terminology of
the SPI framework), this change splits each 16bit FIFO element after
reading and writes them to memory in two 8bit transactions. With this
change, we can now always use the optimised mode for receive-only
transcations independent on the alignment of the target buffer.
Given that we'll run with caches on, the impact should be negligible:
as expected, this has no adverse impact on throughput if running with
a 960MHz LPLL configuration.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
The SPI controller's documentation (I only had access to the RK3399,
RK3368 and PX30 TRMs) specifies that, when operating in master-mode,
the controller will stop the SCLK to avoid RXFIFO overruns and TXFIFO
underruns. Looks like my worries that we'd need to support DMA-330
(aka PL330) to make any further progress were unfounded.
This adds a driver-data structure to capture hardware-specific
settings of individual controller instances (after all, we don't know
if all versions are well-behaved) and adds a 'master_manages_fifo'
flag to it. The first use of said flag is in the optimised
receive-only transfer-handler, which can now request 64Kframe
(i.e. 128KByte) bursts of data on each reprogramming of CTRLR1
(i.e. every time through the loop).
This improves throughput to 46.85MBit/s (a 94.65% bus-utilisation).
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
For the RK3399-Q7 we recommend storing SPL and u-boot.itb in the
on-module 32MBit (and sometimes even larger, if requested as part of a
configure-to-order configuration) SPI-NOR flash that is clocked for a
bitrate of 49.5MBit/s and connected in a single-IO configuration (the
RK3399 only supports single-IO for SPI).
Unfortunately, the existing SPI driver is excruciatingly slow at
reading out large chunks of data (in fact it is just as slow for small
chunks of data, but the overheads of the driver-framework make it less
noticeable): before this change, the throughput on a 4MB read from
SPI-NOR is 8.47MBit/s which equates a 17.11% bus-utilisation.
To improve on this, this commit adds an optimised receive-only
transfer (i.e.: out == NULL) handler that hooks into the main transfer
function and processes data in 16bit frames (utilising the full with
of each FIFO element). As of now, the receive-only handler requires
the in-buffer to be 16bit aligned. Any lingering data (i.e. either if
the in-buffer was not 16-bit aligned or if an odd number of bytes are
to be received) will be handled by the original 8bit reader/wirter.
Given that the SPI controller's documentation does not guarantuee any
interlocking between the RXFIFO and the master SCLK, the transfer loop
will be restarted for each chunk of 32 frames (i.e. 64 bytes).
With this new receive-only transfer handler, the throughput for a 4MB
read increases to 36.28MBit/s (i.e. 73.29% bus-utilisation): this is a
4x improvement over the baseline.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reported-by: Klaus Goger <klaus.goger@theobroma-systems.com>
Series-Cc: Klaus Goger <klaus.goger@theobroma-systems.com>
Series-Cc: Christoph Muellner <christoph.muellner@theobroma-systems.com>
The logic in the main transmit loop took a bit of reading the TRM to
fully understand (due to silent assumptions based in internal logic):
the "wait until idle" at the end of each iteration through the loop is
required for the transmit-path as each clearing of the ENA register
(to update run-length in the CTRLR1 register) will implicitly flush
the FIFOs... transmisson can therefore not overlap loop iterations.
This change adds a comment to clarify the reason/need for waiting
until the controller becomes idle and wraps the entire check into an
'if (out)' to make it clear that this is required for transfers with a
transmit-component only (for transfers having a receive-component,
completion of the transmit-side is trivially ensured by having
received the correct number of bytes).
The change does not increase execution time measurably in any of my
tests.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
While rkspi_enable_chip is called with true/false everywhere else in
the file, one call site uses '0' to denot 'false'.
This change this one parameter to 'false' and effects consistency.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
The maximum transfer length (in a single transaction) for the Rockchip
SPI controller is 64Kframes (i.e. 0x10000 frames) of 8bit or 16bit
frames and is encoded as (num_frames - 1) in CTRLR1. The existing
code subtracted the "minus 1" twice for a maximum transfer length of
0xffff (64K - 1) frames.
While this is not strictly an error (the existing code is correct, but
leads to a bit of head-scrating), fix this off-by-one situation.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Even though the priv-structure and the claim-bus function contain
logic for 16bit frames and for unidirectional transfer modes, neither
of these is used anywhere in the driver.
This removes the unused (as in "has no effect") logic and fields.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
In analysing delays introduced for large SPI reads, the absence of any
indication when a delay was inserted (to ensure the CS toggling is
observed by devices) became apparent.
Add an additional debug-only debug message to record the insertion and
duration of any delay (note that the debug-message will cause a delay
on-top of the delay-duration).
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
This adds reset handling to the cadence qspi driver.
For backwards compatibility, only a warning is printed when failing to
get reset handles.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Convert driver to use spi-mem ops in order to support accelerated MMIO
flash interface in generic way and for better performance.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Now that all boards using TI QSPI have moved to DM and DT, drop non DM
code completely.
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
[jagan: update MIGRATION.txt, rebase config_whitelist.txt]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This patch fixes the tap delay values to be set at 100MHz and 150MHz
as per TRM by fixing the if condition to use <= instead of <.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
We are facing issues in the driver since SPI NOR framework has moved
on SPI MEM framework, and SPI NAND framework is not running properly
with the current driver.
To be able to solve issues met on SPI NOR Flashes and to be able to
support SPI NAND Flashes, the driver has been reworked. We are now using
exec_op ops instead of using xfer ops.
Thanks to this rework, the driver has been successfully tested with:
- mx66l51235l SPI NOR Flash on stm32f746 SOC
- n25q128a SPI NOR Flash on stm32f769 SOC
- mx66l51235l SPI NOR Flash on stm32mp1 SOC
- mt29f2g01abagd SPI NAND Flash on stm32mp1 SOC
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Tested-by: Patrick DELAUNAY <patrick.delaunay@st.com>
Reviewed-by: Patrick DELAUNAY <patrick.delaunay@st.com>
This patch update the behavior introduced by
commit 96907c0fe5 ("dm: spi: Read default speed and mode values from DT")
In case of DT boot, don't read default speed and mode for SPI from
CONFIG_* but instead read from DT node. This will make sure that boards
with multiple SPI/QSPI controllers can be probed at different
bus frequencies and SPI modes.
Remove also use in boards of the value speed=0 (no more supported)
for ENV in SPI by using CONFIG_ENV_SPI_MAX_HZ=0.
DT values will be always used when available (full DM support of
SPI slave with available DT node) even if speed and mode are requested;
for example in splash screen support (in splash_sf_read_raw)
or in SPL boot (in spl_spi_load_image).
The caller of spi_get_bus_and_cs() no more need to force speed=0.
But the current behavior don't change if the SPI slave is not
present (device with generic driver is created automatically)
or if platdata is used (CONFIG_OF_PLATDATA).
Signed-off-by: Patrick Delaunay <patrick.delaunay@st.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Update to prevent a byte of zeros being transmitted between
each byte in the tx buffer when providing both a tx buffer
and a rx buffer.
Signed-off-by: Jared Bents <jared.bents@rockwellcollins.com>
Cc: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Acked-by: Jagan Teki <jagan@amarulasolutions.com>
Add check if exec_op is set before calling it.
At the moment it is called unconditionally, which leads to a crash if it
is not set correctly.
Signed-off-by: Bernhard Messerklinger <bernhard.messerklinger@br-automation.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Use quad write if SPI_TX_QUAD flag is set.
Tested quad write on Stratix 10 SoC board (Micron
serial NOR flash, mt25qu02g)
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Now the same SPI controller driver is reusable in all Allwinner
SoC variants, so rename the existing sun4i_spi.c into spi-sunxi.c
which eventually look like a common sunxi driver.
Also update the function, variable, structure names in driver from
sun4i into sunxi.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
- drop unused macros.
- use base instead of base_addr, for better code readability
- move .probe and .ofdata_to_platdata functions in required
places to add platdata support in future.
- use sentinel sun4i_spi_ids.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
The usual SPI transmission protocol in Allwinner A10 and A31
controllers share similar context with minimal changes in register
offsets along with few additional register bits on A31.
So, add A31 spi controller support in existing sun4i_spi with A31
specific register offsets and bits.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Add CLK support to enable AHB and MOD SPI clocks on sun4i_spi driver.
Clock disablement could be done while releasing the bus transfer, but
the existing code doesn't disable the clocks it only taken care of clock
enablement globally in probe.
So to make a proper clock handling, the clocks should enable it in claim
and disable it in release.
This patch would also do that change, by enable and disable clock in
proper order.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Support fifo_depth via drvdata instead of macro definition, this would
eventually reduce another macro definition for new SPI controller fifo
depth support addition.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Allwinner support two different SPI controllers one for A10 and
another for A31 with minimal changes in register offsets and
respective register bits, but the logic for accessing the SPI
master via SPI slave remains nearly similar.
Add enum offsets for register set and register bits, so-that
it can access both classes of SPI controllers.
Assign same control register for global, transfer and fifo control
registers to make the same code compatible with A31 SPI controller.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Stefan Mavrodiev <stefan@olimex.com> # A20-SOM204
To drain rx fifo the fifo need to poll for how much data has
been filled up in rx fifo.
To achieve this, the current code is using wait_for_bit logic
on control register with exchange burst mode mask, which is not
a proper way of waiting for fifo filled up.
So, add code for polling rxfifo to be filled up using fifo
status register.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
With current order of include files, the file designware_spi.c
can't see that the struct global_data has the member
board_type when CONFIG_BOARD_TYPES is defined. By not seeing this
then all the members are shifted in the struct global_data.
So when the driver is trying to read from device tree blob, it
would pass the wrong address to the function 'fdtdev_get_int'.
This will make to use the default frequency 500000.
The fix consists of changing the order of include files in
designware_spi.c to include first common.h file.
Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
_omap3_spi_set_wordlen() indexed the regs->channel[] array with the
old wordlen (instead of the chipselect number) when reading the current
CHCONF register value. This meant it read from the wrong memory location,
modified that value, and then wrote it back to the correct CHCONF
register. The end result is that most slave configuration settings would
be lost, such as clock divisor, clock/chipselect polarities, etc.
Fixes: 77b8d04854 ("spi: omap3: Convert to driver model")
Signed-off-by: David Rivshin <drivshin@allworx.com>
Now that new SPI NOR layer uses stateless 4 byte opcodes by default,
don't enable SPI_FLASH_BAR. For SPI controllers that cannot support
4-byte addressing, (stm32_qspi.c, fsl_qspi.c, mtk_qspi.c, ich.c,
renesas_rpc_spi.c) add an imply clause to enable SPI_FLASH_BAR so as to
not break functionality.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Switch spi_flash_* interfaces to call into new SPI NOR framework via MTD
layer. Fix up sf_dataflash to work in legacy way. And update sandbox to
use new interfaces/definitions
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Add non DM version of SPI_MEM to support easy migration to new SPI NOR
framework. This can be removed once DM_SPI conversion is complete.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
It is necessary to call spi_claim_bus() before starting any SPI
transactions and this restriction would also apply when calling spi-mem
operations. Therefore claim and release bus before requesting transfer
via exec_op.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
Extend spi_mem_adjust_op_size() to take spi->max_write_size and
spi->max_read_size into account.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
SPI controllers support all types of SPI modes including dual/quad bus
widths. Therefore remove constraint wrt SPI mode from spi-mem layer.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Tested-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Tested-by: Stefan Roese <sr@denx.de>
Tested-by: Horatiu Vultur <horatiu.vultur@microchip.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Tested-by: Jagan Teki <jagan@amarulasolutions.com> #zynq-microzed
When building mxc_spi driver on ARM64 platforms, get below build warnings.
Fix it in this patch.
In file included from include/common.h:48:0,
from drivers/spi/mxc_spi.c:9:
drivers/spi/mxc_spi.c: In function ‘spi_xchg_single’:
drivers/spi/mxc_spi.c:232:21: warning: cast from pointer to integer of
different size [-Wpointer-to-int-cast]
_func_, bitlen, (u32)dout, (u32)din);
^
include/log.h:135:26: note: in definition of macro ‘debug_cond’
printf(pr_fmt(fmt), ##args); \
^~~~
drivers/spi/mxc_spi.c:231:2: note: in expansion of macro ‘debug’
debug("%s: bitlen %d dout 0x%x din 0x%x\n",
^~~~~
drivers/spi/mxc_spi.c:232:32: warning: cast from pointer to integer of
different size [-Wpointer-to-int-cast]
_func_, bitlen, (u32)dout, (u32)din);
^
include/log.h:135:26: note: in definition of macro ‘debug_cond’
printf(pr_fmt(fmt), ##args); \
^~~~
drivers/spi/mxc_spi.c:231:2: note: in expansion of macro ‘debug’
debug("%s: bitlen %d dout 0x%x din 0x%x\n",
^~~~~
Signed-off-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This patch add a new SPI driver for MSCC SOCs that does not sport the
designware SPI hardware controller.
Performance gain: 7.664 seconds vs. 17.633 for 1 Mbyte write.
Signed-off-by: Lars Povlsen <lars.povlsen@microchip.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Current driver doesn't check if the destination pointer is NULL.
This cause the data from the FIFO to be stored inside the internal
SDRAM ( address 0 ).
The patch add simple check if the destination pointer is NULL.
Signed-off-by: Stefan Mavrodiev <stefan@olimex.com>
Acked-by: Jagan Teki <jagan@openedev.com>
[jagan: fix commit message]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
On some platforms, as the Ocelot ones, when wanting to control the CS
through software, it is not possible to do it through the GPIO
controller. Indeed, this signal is managed through a dedicated range of
registers inside the SoC..
By declaring the external_cs_manage function as weak, it is possible to
manage the CS at platform level and then using the appropriate registers.
Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
Linux uses "cdns,qspi-nor" as compatible string for the cadence
qspi driver, so change driver, docs and all device trees.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Drop non-dm code and migrate into DM_SPI.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
[jagan: Move config menu in DM_SPI area]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Rename platform_data include file as spi_pl022.h from pl022_spi.h,
this is generic notation used for spi platdata include files.
Acked-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This patch can drop unnecessary include files in
pl022_spi driver.
Acked-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
pl022 spi driver support both OF_CONTROL and PLATDATA, this
patch is trying to simplify the code that differentiating
platdata vs of_control.
- Move OF_CONTROL code at one place
- Handle clock setup code directly in pl022_spi_ofdata_to_platdata
Acked-by: Quentin Schulz <quentin.schulz@bootlin.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This patch adds MT7629 qspi driver for accessing SPI NOR flash.
Signed-off-by: Guochun Mao <guochun.mao@mediatek.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
The Amlogic Meson SoCs embeds a Flash oriented SPI Controller name SPIFC.
This driver, ported from the Linux meson-spi-spifc driver, add support
for this controller on the Amlogic Meson GX SoCs in U-Boot.
Tested-by: Jerome Brunet <jbrunet@baylibre.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Neil Armstrong <narmstrong@baylibre.com>
When the device tree is missing a correct spi slave description below
the bus (compatible "spi-flash" or spi-max-frequency are missing),
the 'set_speed' callback can be called with 'speed' == 0 Hz.
At least with cadence qspi, this leads to a division by zero.
Prevent this by initializing speed to 100 kHz in this case (same
fallback value as is done in 'dm_spi_claim_bus') and issue a warning
to console.
Signed-off-by: Simon Goldschmidt <simon.k.r.goldschmidt@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Xilinx is introducing Versal, an adaptive compute acceleration platform
(ACAP), built on 7nm FinFET process technology. Versal ACAPs combine
Scalar Processing Engines, Adaptable Hardware Engines, and Intelligent
Engines with leading-edge memory and interfacing technologies to deliver
powerful heterogeneous acceleration for any application. The Versal AI
Core series has five devices, offering 128 to 400 AI Engines. The series
includes dual-core Arm Cortex™-A72 application processors, dual-core Arm
Cortex-R5 real-time processors, 256KB of on-chip memory with ECC, more
than 1,900 DSP engines optimized for high-precision floating point with
low latency.
The patch is adding necessary infrastructure in place without enabling
platform which is done in separate patch.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Davanci spi driver has DM support already, this patch
add support for platdata so-that SPL can use it for
low foot-print.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Tested-by: Adam Ford <aford173@gmail.com>
When SPI flash operations fail it is helpful to be able to see the error
codes and where they are generated. Add logging to capture this
information for read operations.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add logging to aid debugging features in these drivers. Also drop some
code in sandbox_spi_xfer() which is not used.
Signed-off-by: Simon Glass <sjg@chromium.org>
This patch adds the SPI driver for the MediaTek MT7688 SoC (and
derivates). Its been tested on the LinkIt Smart 7688 and the Gardena
Smart Gateway with and SPI NOR on CS0 and on the Gardena Smart
Gateway additionally with an SPI NAND on CS1.
Note that the SPI controller only supports a max transfer size of 32
bytes. This driver implementes a workaround to enable bigger xfer
sizes to speed up the transfer especially for the SPI NAND support.
Signed-off-by: Stefan Roese <sr@denx.de>
Cc: Jagan Teki <jagan@openedev.com>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Piotr Dymacz <pepe2k@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
This is the PR for SPI-NAND changes along with few spi changes.
[trini: Re-sync changes for ls1012afrwy_qspi*_defconfig]
Signed-off-by: Tom Rini <trini@konsulko.com>
Add DM support to the SH QSPI driver while retaining non-DM support.
The later is required as this driver is used in SPL which has a size
limitation of 16 kiB.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
[jagan: use proper commit head]
Reviewed-by: Jagan Teki <jagan@openedev.com>
Convert fsl_qspi.c to complete DM mode.
Signed-off-by: Ashish Kumar <Ashish.Kumar@nxp.com>
Tested-by: Rajat Srivastava <rajat.srivastava@nxp.com>
Tested-by: Ye Li <ye.li@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Add code to reset all reset signals as in SPI DT node. A reset property
is an optional feature, so only print out a warning and do not fail if a
reset property is not present.
If a reset property is discovered, then use it to deassert, thus
bringing the IP out of reset.
Release reset when _remove().
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This adds support for the ARM PL022 SPI controller for the standard
variant (0x00041022) which has a 16bit wide and 8 locations deep TX/RX
FIFO.
A few parts were borrowed from the Linux kernel driver.
Cc: Armando Visconti <armando.visconti@st.com>
Cc: Vipin Kumar <vipin.kumar@st.com>
Signed-off-by: Quentin Schulz <quentin.schulz@bootlin.com>
Some controllers are exposing high-level interfaces to access various
kind of SPI memories. Unfortunately they do not fit in the current
spi_controller model and usually have drivers placed in
drivers/mtd/spi-nor which are only supporting SPI NORs and not SPI
memories in general.
This is an attempt at defining a SPI memory interface which works for
all kinds of SPI memories (NORs, NANDs, SRAMs).
Signed-off-by: Boris Brezillon <boris.brezillon@bootlin.com>
Signed-off-by: Miquel Raynal <miquel.raynal@bootlin.com>
Acked-by: Jagan Teki <jagan@openedev.com>
Add spi driver for sun4i, sun5i and sun7i SoCs. The driver is
adapted from mailine kernel.
Signed-off-by: Stefan Mavrodiev <stefan@olimex.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This matches the compatible string used by the Linux kernel. This will
allow u-boot to use the same device tree files.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
[jagan: use armada instead of orion on .data]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Get the is_errata_50mhz_ac in .ofdata_to_platdata, and
reuse it in .set_mode this can eventually initialized
dt code at once and adding room to add platdata.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
This patch adds qspi driver support for ZynqMP SoC. This
driver is responsible for communicating with qspi flash
devices.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
[jagan: removed GQSPI_MIO_NUM_ macros]
Reviewed-by: Jagan Teki <jagan@openedev.com>
This patch is for the startup block issue in the spi controller.
SPI clock is passing through STARTUP block to FLASH. STARTUP block
don't provide clock as soon as QSPI provides command. So, first
command fails.
This patch added support to read JEDEC id in xilinx_spi_xfer ().
Signed-off-by: Vipul Kumar <vipul.kumar@xilinx.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This patch modify xilinx_spi_xfer() function and add rxfifo() and
txfifo() functions to add the modularity so that these functions
can be used by other functions within the same file.
This patch also added support to read fifo_size from dts.
Signed-off-by: Vipul Kumar <vipul.kumar@xilinx.com>
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This patch added support to read register base address from DTS file.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Vipul Kumar <vipul.kumar@xilinx.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Use "%p" to print cmdbuf.
Compilation warning as below:
CC spl/drivers/spi/cadence_qspi_apb.o
LD spl/lib/built-in.o
drivers/spi/cadence_qspi_apb.c: In function ‘cadence_qspi_apb_indirect_write_setup’:
drivers/spi/cadence_qspi_apb.c:696:18: warning: cast from pointer to integer of different size [-Wpointer-to-int-cast]
cmdlen, (unsigned int)cmdbuf);
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Marek Vasut <marex@denx.de>
Use "%zu" for size_t data type.
Compilation warning as below:
In file included from include/linux/bug.h:7:0,
from include/common.h:26,
from drivers/spi/cadence_qspi.c:8:
drivers/spi/cadence_qspi.c: In function ‘cadence_spi_xfer’:
drivers/spi/cadence_qspi.c:211:8: warning: format ‘%d’ expects argument of type ‘int’, but argument 3 has type ‘size_t {aka long unsigned int}’ [-Wformat=]
debug("%s: len=%d [bytes]\n", __func__, data_bytes);
^
include/linux/printk.h:37:21: note: in definition of macro ‘pr_fmt’
#define pr_fmt(fmt) fmt
^~~
include/log.h:142:2: note: in expansion of macro ‘debug_cond’
debug_cond(_DEBUG, fmt, ##args)
^~~~~~~~~~
drivers/spi/cadence_qspi.c:211:2: note: in expansion of macro ‘debug’
debug("%s: len=%d [bytes]\n", __func__, data_bytes);
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Marek Vasut <marex@denx.de>
Add support for loading U-Boot on the Broadcom 7445 SoC. This port
assumes Broadcom's BOLT bootloader is acting as the second stage
bootloader, and U-Boot is acting as the third stage bootloader, loaded
as an ELF program by BOLT.
Signed-off-by: Thomas Fitzsimmons <fitzsim@fitzsim.org>
Cc: Stefan Roese <sr@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Florian Fainelli <f.fainelli@gmail.com>
The claim/release bus function must not reset the whole SPI core because
settings regarding wordlen, clock-frequency and so on made by
set_wordlen, set_mode, set_speed get lost with this action. Resulting in
a non-functional SPI.
Without DM the failure didn't came up since after the spi_reset within
claim bus all the setup (wordlen, mode, ...) was called, in DM they are
called by the spi uclass.
We change now the things as following for having a working SPI instance
in DM:
- move the spi_reset(...) to the probe call in DM for having a known
hardware state after probe. Without DM we don't have a probe call, so we
issue the reset as before during the claim_bus call.
- in release bus we just reset the modulctrl to the reset-value (spi-
slave)
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Reviewed-by: Jagan Teki <jagan@openedev.com>
commit 8480792287
("spi: omap3: Skip set_mode, set_speed from claim") did break SPI
support on my AM335x board.
The named commit:
- ignored the responsible arguments (speed, mode)
The set speed/mode function must use the supplied function arguments to
work properly. With this commit we take those arguments and transfer
them to the priv-data.
- used wrong udevice pointer for getting priv data
the udevice-pointer within function argument is already the spi-bus
device, so it is wrong looking here for some parent (ocp-bus in this
case) and getting priv-pointer from there.
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Otherwise the frequency is zero and the clock divider cannot be setup by
'omap3_spi_set_speed' function.
Signed-off-by: Hannes Schmelzer <oe5hpm@oevsv.at>
Reviewed-by: Jagan Teki <jagan@openedev.com>
CS GPIO activation low/high is determinated by the device tree
so we don't need to take in accoung in cs_activate and cs_deactivate
Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This patch replaced "return 0" with "return status" to fix the
incorrect return value error reported by the coverity.
Reviewed-by: Michal Simek <michal.simek@xilinx.com>
Signed-off-by: Vipul Kumar <vipul.kumar@xilinx.com>
[jagan: rebased on master]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Change to use devfdt_get_addr_index() function to get fdt address.
Original code has compilation warning below:
drivers/spi/cadence_qspi.c: In function ‘cadence_spi_ofdata_to_platdata’:
drivers/spi/cadence_qspi.c:297:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
plat->regbase = (void *)data[0];
^
drivers/spi/cadence_qspi.c:298:18: warning: cast to pointer from integer of different size [-Wint-to-pointer-cast]
plat->ahbbase = (void *)data[2];
^
Signed-off-by: Ley Foon Tan <ley.foon.tan@intel.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Fix warning as below when compile in 64-bit.
warning: format '%u' expects argument of type
'unsigned int', but argument 6 has type 'size_t
{aka long unsigned int}
Signed-off-by: Rick Chen <rick@andestech.com>
Signed-off-by: Rick Chen <rickchen36@gmail.com>
Cc: Greentime Hu <green.hu@gmail.com>
In
void *rx_addr = NULL;
rx_add = A;
the first assignment has no effect. Remove it.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
For SPI_XFER_BEGIN | SPI_XFER_END the code sets data_out = NULL.
In the debug statement we should not dereference this value.
As we do not transfer any data the debug statement is not needed in this
case anyway.
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
In some situation, QSPI controller is already configured by an early
boot stage, adding reset support will insure that QSPI controller is
started from a pristine state.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Use dev_read_xxx() instead of old manner fdt_xxx() API
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Quad-SPI interface is able to manage 2 spi nor devices.
FSEL bit selects the flash memory to be addressed in single flash mode.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Add "st,stm32f469-qspi" compatible which is used on kernel side.
This will be necessary when DT will be synchronised from kernel.
Signed-off-by: Christophe Kerello <christophe.kerello@st.com>
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
As all platforms which uses this driver have CONFIG_CLK flag
enable in their defconfig, we can remove it from driver code.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Since now we have driver for clocks on Armada 37xx, use it to determine
SQF clock frequency for the SPI driver.
Also change the default config files for Armada 37xx devices so that
the clock driver is enabled by default, otherwise the SPI driver cannot
be enabled.
Signed-off-by: Marek Behun <marek.behun@nic.cz>
Signed-off-by: Stefan Roese <sr@denx.de>
Some SoCs have different endianness of QSPI IP if compared
to endianness of core. The function is_controller_busy()
checks if the QSPI controller is busy or not, considering
the endianness of the QSPI IP.
Signed-off-by: Rajat Srivastava <rajat.srivastava@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
When U-Boot started using SPDX tags we were among the early adopters and
there weren't a lot of other examples to borrow from. So we picked the
area of the file that usually had a full license text and replaced it
with an appropriate SPDX-License-Identifier: entry. Since then, the
Linux Kernel has adopted SPDX tags and they place it as the very first
line in a file (except where shebangs are used, then it's second line)
and with slightly different comment styles than us.
In part due to community overlap, in part due to better tag visibility
and in part for other minor reasons, switch over to that style.
This commit changes all instances where we have a single declared
license in the tag as both the before and after are identical in tag
contents. There's also a few places where I found we did not have a tag
and have introduced one.
Signed-off-by: Tom Rini <trini@konsulko.com>
We have a large number of places where while we historically referenced
gd in the code we no longer do, as well as cases where the code added
that line "just in case" during development and never dropped it.
Signed-off-by: Tom Rini <trini@konsulko.com>
This converts the following to Kconfig:
CONFIG_SPI
This partly involves updating code that assumes that CONFIG_SPI implies
things that are specific to the MPC8xx SPI driver. For now, just update
the CONFIG tests. This also involves reworking the default for
CONFIG_SYS_DEF_EEPROM_ADDR so that we don't set it when we cannot make a
reasonable default, as it does not cause any compile failures.
Signed-off-by: Adam Ford <aford173@gmail.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
While switching to readl_poll_timeout macros from custom code
the waiting condition was accidently inverted, so it was pure
luck that this code works at least in some conditions.
Fix that by inverting exit condition for readl_poll_timeout.
Fixes: c6b4f031d9 ("DW SPI: fix tx data loss on FIFO flush")
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
The QSPI controller on RCar Gen2 has 32byte FIFO. Instead of doing
the SPI transmission 1 byte at time, if there is a 32byte chunk of
data to be transferred, fill the FIFO completely and then transfer
the data to/from the FIFO. This increases the SPI NOR access speed
significantly.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Replace the ad-hoc endless loops with wait_for_bit() with
reasonable timeout. Note that the loops had internal 10uS
delays, although there is no reason for those on this HW,
so they are dropped.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Waiting for SPBDCR == 1 is not required and is covered by the
subsequent wait for SPSR_SPRFF, so drop this.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Just replace unsigned {char,short,long} with u{8,16,32},
no functional change.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <nobuhiro.iwamatsu.yj@renesas.com>
Add driver for the RPC block in SPI-flash mode. This driver allows
access to a SPI NOR flash attached to the RPC block and does not
support RPC in Hyperflash mode. Note that this block is extremely
selective when communicating with the SPI NOR.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
As we aren't quite able to convert some platforms with a very small size
limit in SPL yet, we need to revert this for now.
This reverts commit 7b09477873.
Signed-off-by: Tom Rini <trini@konsulko.com>
As we aren't quite able to convert some platforms with a very small size
limit in SPL yet, we need to revert this for now.
This reverts commit 37434db29b.
Signed-off-by: Tom Rini <trini@konsulko.com>
include/commproc.h is dedicated to the 8xx, rename it cpm_8xx.h and
move it into arch/powerpc/include/asm
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
CONFIG_8xx doesn't mean much outside of arch/powerpc/
This patch renames it CONFIG_MPC8xx just like CONFIG_MPC85xx etc ...
It also renames 8xx_immap.h to immap_8xx.h to be consistent with
other file names.
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
ATMEL_SPI is now fully converted to driver-model and
respective boards switch to DM_SPI as well,
so make default y for ARCH_AT91
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Wenyou Yang <wenyouya@gmail.com>
atmel_spi.h has register offsets, and atmel_spi_slave
structure, move it into .c file for better readability
and drop atmel_spi.h
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Wenyou Yang <wenyouya@gmail.com>
All board configs are now enabled DM_SPI for SPL and
U-Boot proper, so now its time to drop non-dm code.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Wenyou Yang <wenyouya@gmail.com>
Few boards are configuring gpio directly from board instead
using drivers/gpio so add ifdef for DM_GPIO to compatible
for both the cases.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Wenyou Yang <wenyouya@gmail.com>
The ti,pindir-d0-out-d1-in property is not expected to have a value
according to the device-tree binding, so treat it as a boolean not a
uint property.
Signed-off-by: Sjoerd Simons <sjoerd.simons@collabora.co.uk>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Current DW SPI driver uses 32 bit access for some registers and
16 bit access for others. So if DW SPI IP is connected via bus
which doesn't support 16 bit access we will get bus error.
Fix that by switching to 32 bit access only instead of 16 and 32 bit mix
Additional Documentation to Support this Change:
The DW_apb_ssi databook states:
"All registers in the DW_apb_ssi are addressed at 32-bit boundaries
to remain consistent with the AHB bus. Where the physical size of
any register is less than 32-bits wide, the upper unused bits of
the 32-bit boundary are reserved. Writing to these bits has no
effect; reading from these bits returns 0." [1]
[1] Section 6.1 of dw_apb_ssi.pdf (version 3.22a)
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
DW SPI internal chip select management has limitation:
it hold CS line in active state only when the FIFO is not
empty. If the FIFO freed before we add new data the SPI transaction will
be broken.
So add option to use external gpio for chip select. Gpio can be added
via device tree using standard gpio bindings.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
There is no sense in waiting for RX data in dw_reader function:
there is no chance that RX data will appear in RX FIFO if
RX FIFO is empty after previous TX write in dw_writer function.
So get rid of this waiting. After that we can get rid of dw_reader
return value and make it returning void. After that we can get rid
of dw_reader return value check in poll_transfer function.
With these changes we're getting closer to Linux DW SPI driver.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
In current implementation we get -ETIMEDOUT error when we try to use
transmit only mode (SPI_TMOD_TO)
This happens because in transmit only mode input FIFO never gets any data
which breaks our logic in dw_reader(): we are waiting until RX data will be
ready in dw_reader, but this newer happens, so we return with error.
Fix that by using SPI_TMOD_TR instead of SPI_TMOD_TO which allows to use
RX FIFO.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
In current implementation if some data still exists in Tx FIFO it
can be silently flushed, i.e. dropped on disabling of the controller,
which happens when writing 0 to DW_SPI_SSIENR (it happens in the
beginning of new transfer)
So add wait for current transmit operation to complete to be sure
that current transmit operation is finished before new one.
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
omap3_spi_set_speed|mode redeclared bus symbol, fix the same.
error:
drivers/spi/omap3_spi.c: In function ‘omap3_spi_set_speed’:
drivers/spi/omap3_spi.c:650:18: error: ‘bus’ redeclared as different kind of symbol
struct udevice *bus = dev->parent;
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Use available DM stm32_timer driver instead of dedicated
mach-stm32/stm32fx/timer.c.
Remove all defines or files previously used for timer usage in
arch/arm/include/asm/arch-stm32fx and in arch/arm/mach-stm32/stm32fx
Enable DM STM32_TIMER for STM32F4/F7 and H7.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
set_mode, set_seed functions has separate function pointers
in dm_spi_ops, so use them in relevent one instead of
calling from claim_bus.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Boards adp-ae3xx_defconfig, nx25-ae250_defconfig
already enabled DM_SPI, so non-dm code make no use
of it hence droped.
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Add option to set spi controller clock frequency via device tree
using standard clock bindings.
Define dw_spi_get_clk function as 'weak' as some targets
(like SOCFPGA_GEN5 and SOCFPGA_ARRIA10) don't use standard clock API
and implement dw_spi_get_clk their own way in their clock manager.
Get rid of clock_manager.h include as we don't use
cm_get_spi_controller_clk_hz function anymore. (we use redefined
dw_spi_get_clk in SOCFPGA clock managers instead)
Reviewed-by: Marek Vasut <marex@denx.de>
Signed-off-by: Eugeniy Paltsev <Eugeniy.Paltsev@synopsys.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Make flash writes 32 bit aligned by using bounce buffers to deal with
non 32 bit aligned buffers.
This is required because as per TI K2G TRM[1], the external master is
only permitted to issue 32-bit data interface writes until the last word
of an indirect transfer. Otherwise indirect writes is known to fail
sometimes.
[1] http://www.ti.com/lit/ug/spruhy8g/spruhy8g.pdf
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Reviewed-by: Jason Rush <jarush@gmail.com>
Acked-by: Jason Rush <jarush@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This reverts commit 57897c13de.
Using bounce_buf.c to handle non-DMA alignment problems is bad as
bounce_buf.c does cache manipulations which is not required. Therefore
revert this patch in favour of local bounce buffer solution in the next
patch.
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Marek Vasut <marex@denx.de>
Acked-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Reviewed-by: Jason Rush <jarush@gmail.com>
Acked-by: Jason Rush <jarush@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This reverts commit b63b46313e.
This commit changed cadence_qspi_apb to use bouncebuf.c, which invalidates
the data cache after reading. This is meant for dma transfers only and
breaks the cadence_qspi driver which copies via cpu only: data that is
copied by the cpu is in cache only and the cache invalidation at the end
throws away this data.
Signed-off-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Marek Vasut <marex@denx.de>
Reviewed-by: Jason Rush <jarush@gmail.com>
Acked-by: Jason Rush <jarush@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Adopt the Linux DT bindings. This also fixes an issue
with the indaddrtrig register on the Cadence QSPI
device being programmed with the wrong value for the
socfpga arch.
Tested on TI K2G platform:
Tested-by: Vignesh R <vigneshr@ti.com>
Tested on a socfpga-cyclonev board:
Tested-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Signed-off-by: Jason Rush <jarush@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Acked-by: Simon Goldschmidt <sgoldschmidt@de.pepperl-fuchs.com>
Acked-by: Marek Vasut <marex@denx.de>
Erratum NO. FE-9144572: The device SPI interface supports frequencies of
up to 50 MHz. However, due to this erratum, when the device core clock
is 250 MHz and the SPI interfaces is configured for 50MHz SPI clock and
CPOL=CPHA=1 there might occur data corruption on reads from the SPI
device.
Implement the workaround by setting the TMISO_SAMPLE value to 0x2
in the timing1 register.
Signed-off-by: Chris Packham <judge.packham@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Remove a superfluous newline, and reduce the scope of a variable.
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
A previous patch removed the spi_flash_probe_fdt function, which
contained the last call of the spi_setup_slave_fdt function, which is
now equally obsolete.
This patch removes the function.
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
0efc024 ("spi_flash: Add spi_flash_probe_fdt() to locate SPI by FDT
node") added a helper function spi_base_setup_slave_fdt to to set up a
SPI slave from a given FDT blob. The only user was the exynos SPI
driver.
But commit 73186c9 ("dm: exynos: Convert SPI to driver model") removed
the use of this function, hence rendering it obsolete.
Remove this function, as well as the CONFIG_OF_SPI option, which guarded
only this function.
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Mario Six <mario.six@gdsys.cc>
This patch fixes a printf specifier style violation, reduces the scope
of a variable, and turns a void pointer that is used with pointer
arithmetic into a u8 pointer.
Signed-off-by: Mario Six <mario.six@gdsys.cc>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This driver is a simplified version of linux/drivers/spi/spi-bcm63xx-hsspi.c
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This driver is a simplified version of linux/drivers/spi/spi-bcm63xx.c
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
wait_for_bit callers use the 32 bit LE version
Signed-off-by: Álvaro Fernández Rojas <noltari@gmail.com>
Reviewed-by: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
The QSPI module on i.MX7D is modified from i.MX6SX. The module used on
i.MX6UL/6ULL is reused from i.MX7D. They share same tx buffer size.
The endianness is not set at qspi driver initialization. So if we don't
boot from QSPI, we will get wrong endianness when accessing from AHB
address directly.
Add the compatible entry for 6ul/7d.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
atcspi200 is Andestech spi ip which is embedded in
AE3XX and AE250 platforms. So rename as atcspi200
will be more reasonable to be used in different
platforms.
Signed-off-by: Rick Chen <rick@andestech.com>
fix typo
Signed-off-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Some Intel FSP (like Braswell) does SPI lock-down during the call
to fsp_notify(INIT_PHASE_BOOT). But before SPI lock-down is done,
it's bootloader's responsibility to configure the SPI controller's
opcode registers properly otherwise SPI controller driver doesn't
know how to communicate with the SPI flash device.
Rather than passively doing the opcode configuration, let's add a
simple DTS property "intel,spi-lock-down" and let the driver call
the opcode configuration function if required by such FSP.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Last user of this option went away in commit:
fdc7718999 ("board: usb_a9263: Update to support DT and DM")
Signed-off-by: Tuomas Tynkkynen <tuomas.tynkkynen@iki.fi>
Acked-by: Wenyou Yang <wenyou.yang@microchip.com>
U-Boot widely uses error() as a bit noisier variant of printf().
This macro causes name conflict with the following line in
include/linux/compiler-gcc.h:
# define __compiletime_error(message) __attribute__((error(message)))
This prevents us from using __compiletime_error(), and makes it
difficult to fully sync BUILD_BUG macros with Linux. (Notice
Linux's BUILD_BUG_ON_MSG is implemented by using compiletime_assert().)
Let's convert error() into now treewide-available pr_err().
Done with the help of Coccinelle, excluing tools/ directory.
The semantic patch I used is as follows:
// <smpl>
@@@@
-error
+pr_err
(...)
// </smpl>
Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
[trini: Re-run Coccinelle]
Signed-off-by: Tom Rini <trini@konsulko.com>
The DM support is already in the driver, so add
da830-spi to the compatible list.
Reviewed-by: Jagan Teki <jagan@openedev.com>
Signed-off-by: Adam Ford <aford173@gmail.com>
In some of the QSPI controller version, there must be atleast
128bit data available in TX FIFO for any pop operation otherwise
error bit will be set. The code will not make any behavior change
for previous controller as the transfer data size in ipcr register
is still the same.
Patch is tested on LS1046A which do not require 16 bytes aligned and
LS1088A which require 16 bytes aligned data in TX FIFO
Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Signed-off-by: Anupam Kumar <anupam.kumar_1@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
It is recommended to check either controller is free to take
new spi action. The IP_ACC and AHB_ACC bits indicates that
the controller is busy in IP or AHB mode respectively.
And the BUSY bit indicates that controller is currently
busy handling a transaction to an external flash device
Signed-off-by: Suresh Gupta <suresh.gupta@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Add driver model support for mxc spi driver.
Most functions are restructured to be reused by DM and non-DM.
Tested on mx6slevk/mx6qsabresd board.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
Update the Rockchip SPI driver to support a live device tree.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Acked-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
The atomic preop register can only be written when SPI settings are
not locked, otherwise it's read-only.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
In ich_spi_xfer() when the driver presets control fields, control
variable gets assigned twice. Apparently only the last assignment
takes effect. Remove the other one.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
At present the ICH SPI opcode registers configuration is done in the
ich_spi_remove() routine, a little bit weird but that's how current.
Linux MTD driver works. This changes to move the opcode registers
configuration to a separate routine ich_spi_config_opcode() which
might be called by U-Boot itself as well.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
At present the ICH SPI controller driver reads the controller lock
status from its register in the probe routine and saves the lock
status to a member of priv. Later the driver uses the cached status
from priv to judge whether the controller setting is locked and do
different setup.
But such logic is only valid when there is only the SPI controller
driver that touches the SPI hardware. In fact the lock status change
can be trigged outside the driver, eg: during the fsp_notify() call
when Intel FSP is used.
This changes the driver to read the lock status every time when an
SPI transfer is initiated instead of reading the cached one.
Signed-off-by: Bin Meng <bmeng.cn@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
For the RK3368, we can reuse the SPI driver (although we'll have to
eventually investigate whether it can be merged with the
designware_spi.c driver) also used for the RK3288 and RK3399.
This adds the necessary compatible string to support the RK3368.
Note that the assumption that GPLL will be clocked at 594MHz is not
true for the RK3368, but this will not lead to incorrect functioning
(just to a lower-than-expected SPI operating frequency): this has been
documented in the driver, so it doesn't cause any headaches when
someone next needs to touch the clock code of this driver.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The OMAP3_SPI driver can work with or without DM_SPI. Moving this
outside of the #if DM_SPI section allows us to include it on boards
that don't support DM_SPI yet.
Signed-off-by: Adam Ford <aford173@gmail.com>
Pet the watchdog once upon each command call (qspi_xfer) and during
each loop iteration in several commands.
This fixes a watchdog reset especially during erase command.
Signed-off-by: Alexander Stein <alexander.stein@systec-electronic.com>
Reviewed-by: York Sun <york.sun@nxp.com>
Update the tegra114 spi driver to support a live device tree.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
Tested-by: Stephen Warren <swarren@nvidia.com>
Adjust this to take a device as a parameter instead of a node.
Signed-off-by: Simon Glass <sjg@chromium.org>
Tested-by: Marcel Ziswiler <marcel.ziswiler@toradex.com>
Tested-on: Beaver, Jetson-TK1
Tested-by: Stephen Warren <swarren@nvidia.com>
Replace proprietary clock_get() by clk_get_rate()
The stm32_qspi is now "generic" and can be used
by other STM32 SoCs.
Signed-off-by: Patrice Chotard <patrice.chotard@st.com>
Acked-by: Vikas MANOCHA <vikas.manocha@st.com>
Change is consistent with other SOCs and it is in preparation
for adding SOMs. SOC's related files are moved from cpu/ to
mach-imx/<SOC>.
This change is also coherent with the structure in kernel.
Signed-off-by: Stefano Babic <sbabic@denx.de>
CC: Fabio Estevam <fabio.estevam@nxp.com>
CC: Akshay Bhat <akshaybhat@timesys.com>
CC: Ken Lin <Ken.Lin@advantech.com.tw>
CC: Marek Vasut <marek.vasut@gmail.com>
CC: Heiko Schocher <hs@denx.de>
CC: "Sébastien Szymanski" <sebastien.szymanski@armadeus.com>
CC: Christian Gmeiner <christian.gmeiner@gmail.com>
CC: Stefan Roese <sr@denx.de>
CC: Patrick Bruenn <p.bruenn@beckhoff.com>
CC: Troy Kisky <troy.kisky@boundarydevices.com>
CC: Nikita Kiryanov <nikita@compulab.co.il>
CC: Otavio Salvador <otavio@ossystems.com.br>
CC: "Eric Bénard" <eric@eukrea.com>
CC: Jagan Teki <jagan@amarulasolutions.com>
CC: Ye Li <ye.li@nxp.com>
CC: Peng Fan <peng.fan@nxp.com>
CC: Adrian Alonso <adrian.alonso@nxp.com>
CC: Alison Wang <b18965@freescale.com>
CC: Tim Harvey <tharvey@gateworks.com>
CC: Martin Donnelly <martin.donnelly@ge.com>
CC: Marcin Niestroj <m.niestroj@grinn-global.com>
CC: Lukasz Majewski <lukma@denx.de>
CC: Adam Ford <aford173@gmail.com>
CC: "Albert ARIBAUD (3ADEV)" <albert.aribaud@3adev.fr>
CC: Boris Brezillon <boris.brezillon@free-electrons.com>
CC: Soeren Moch <smoch@web.de>
CC: Richard Hu <richard.hu@technexion.com>
CC: Wig Cheng <wig.cheng@technexion.com>
CC: Vanessa Maegima <vanessa.maegima@nxp.com>
CC: Max Krummenacher <max.krummenacher@toradex.com>
CC: Stefan Agner <stefan.agner@toradex.com>
CC: Markus Niebel <Markus.Niebel@tq-group.com>
CC: Breno Lima <breno.lima@nxp.com>
CC: Francesco Montefoschi <francesco.montefoschi@udoo.org>
CC: Jaehoon Chung <jh80.chung@samsung.com>
CC: Scott Wood <oss@buserror.net>
CC: Joe Hershberger <joe.hershberger@ni.com>
CC: Anatolij Gustschin <agust@denx.de>
CC: Simon Glass <sjg@chromium.org>
CC: "Andrew F. Davis" <afd@ti.com>
CC: "Łukasz Majewski" <l.majewski@samsung.com>
CC: Patrice Chotard <patrice.chotard@st.com>
CC: Nobuhiro Iwamatsu <iwamatsu@nigauri.org>
CC: Hans de Goede <hdegoede@redhat.com>
CC: Masahiro Yamada <yamada.masahiro@socionext.com>
CC: Stephen Warren <swarren@nvidia.com>
CC: Andre Przywara <andre.przywara@arm.com>
CC: "Álvaro Fernández Rojas" <noltari@gmail.com>
CC: York Sun <york.sun@nxp.com>
CC: Xiaoliang Yang <xiaoliang.yang@nxp.com>
CC: Chen-Yu Tsai <wens@csie.org>
CC: George McCollister <george.mccollister@gmail.com>
CC: Sven Ebenfeld <sven.ebenfeld@gmail.com>
CC: Filip Brozovic <fbrozovic@gmail.com>
CC: Petr Kulhavy <brain@jikos.cz>
CC: Eric Nelson <eric@nelint.com>
CC: Bai Ping <ping.bai@nxp.com>
CC: Anson Huang <Anson.Huang@nxp.com>
CC: Sanchayan Maity <maitysanchayan@gmail.com>
CC: Lokesh Vutla <lokeshvutla@ti.com>
CC: Patrick Delaunay <patrick.delaunay@st.com>
CC: Gary Bisson <gary.bisson@boundarydevices.com>
CC: Alexander Graf <agraf@suse.de>
CC: u-boot@lists.denx.de
Reviewed-by: Fabio Estevam <fabio.estevam@nxp.com>
Reviewed-by: Christian Gmeiner <christian.gmeiner@gmail.com>
With the new dev_read functions available, we can convert the rockchip
architecture-specific drivers and common drivers used by these devices
over to the dev_read family of calls.
This change covers the rk_spi.c (SPI driver) used in Rockchip devices.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
AVR32 is gone. It's already more than two years for no support in Buildroot,
even longer there is no support in GCC (last version is heavily patched 4.2.4).
Linux kernel v4.12 got rid of it (and v4.11 didn't build successfully).
There is no good point to keep this support in U-Boot either.
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
For devices that need a delay between SPI transactions we seem to need an
additional delay before the first one if the CPU is running at full speed.
Add this, under control of the existing setting. At present it will only
be enabled with the Chrome OS EC.
Signed-off-by: Simon Glass <sjg@chromium.org>
Update the SPI uclass to support a live device tree. Also adjust
spi_slave_ofdata_to_platdata() to accept a device instead of a blob and
offset.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add support for requesting GPIOs with a live device tree.
This involves adjusting the function signature for the legacy function
gpio_request_by_name_nodev(), so fix up all callers.
Signed-off-by: Simon Glass <sjg@chromium.org>
Fixes to stm32f746-disco.c:
Signed-off-by: Tom Rini <trini@konsulko.com>
At present devices use a simple integer offset to record the device tree
node associated with the device. In preparation for supporting a live
device tree, which uses a node pointer instead, refactor existing code to
access this field through an inline function.
Signed-off-by: Simon Glass <sjg@chromium.org>
It is good practice to include common.h as the first header. This ensures
that required features like the DECLARE_GLOBAL_DATA_PTR macro,
configuration options and common types are available.
Fix up some files which currently don't do this. This is necessary because
driver model will soon start using global data and configuration in the
dm/read.h header file, included via dm.h. The gd->fdt_blob value will be
used to access the device tree and CONFIG options will be used to
determine whether to support inline functions in the header file.
Signed-off-by: Simon Glass <sjg@chromium.org>
These support the flat device tree. We want to use the dev_read_..()
prefix for functions that support both flat tree and live tree. So rename
the existing functions to avoid confusion.
In the end we will have:
1. dev_read_addr...() - works on devices, supports flat/live tree
2. devfdt_get_addr...() - current functions, flat tree only
3. of_get_address() etc. - new functions, live tree only
All drivers will be written to use 1. That function will in turn call
either 2 or 3 depending on whether the flat or live tree is in use.
Note this involves changing some dead code - the imx_lpi2c.c file.
Signed-off-by: Simon Glass <sjg@chromium.org>
Add the Kconfig entry for SOFT_SPI which uses gpio to simulate the
SPI signals. We use it for accessing 74x164 on some i.MX boards.
Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Jagan Teki <jagan@openedev.com>
Cc: Stefano Babic <sbabic@denx.de>
This patch adds a remove function to the Intel ICH SPI driver, that will
be called upon U-Boot exit, directly before the OS (Linux) is started.
This function takes care of configuring the BIOS registers in the SPI
controller (similar to what a "standard" BIOS or coreboot does), so that
the Linux MTD device driver is able to correctly read/write to the SPI
NOR chip. Without this, the chip is not detected at all.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Jagan Teki <jteki@openedev.com>
This particular quirk is not enabled in any config files today. It does
however exist and is handled correctly in device trees and via
CONFIG_DM_SPI. So we drop the symbol now and add a comment to indicate
that any (new) boards that require this quirk need to enable DM_SPI
instead.
Signed-off-by: Tom Rini <trini@konsulko.com>
The existing Rockchip SPI (rk_spi.c) driver also matches the hardware
block found in the RK3399. This has been confirmed both with SPI NOR
flashes and general SPI transfers on the RK3399-Q7 for SPI1 and SPI5.
This change adds the 'rockchip,rk3399-spi' string to its compatible
list to allow reuse of the existing driver.
X-AffectedPlatforms: RK3399-Q7
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Jakob Unterwurzacher <jakob.unterwurzacher@theobroma-systems.com>
Acked-by: Simon Glass <sjg@chromium.org>
The baudrate in rkspi was calculated by using an integer division
(which implicitly discarded any fractional result), then rounding to
an even number and finally clamping to 0xfffe using a bitwise AND
operator. This introduced two issues:
1) for very small baudrates (overflowing the 0xfffe range), the
bitwise-AND generates rather random-looking (wildly varying)
actual output bitrates
2) for higher baudrates, the calculation tends to 'err towards a
higher baudrate' with the actual error increasing as the dividers
become very small. E.g., with a 99MHz input clock, a request
for a 20MBit baudrate (99/20 = 4.95), a 24.75 MBit would be use
(which amounts to a 23.75% error)... for a 34 MBit request this
would be an actual outbout of 49.5 Mbit (i.e. a 45% error).
This change rewrites the divider selection (i.e. baudrate calculation)
by making sure that
a) for the normal case: the largest representable baudrate below the
requested rate will be chosen;
b) for the denormal case (i.e. when the divider can no longer be
represented), the lowest representable baudrate is chosen.
Even though the denormal case (b) may be of little concern in real
world applications (even with a 198MHz input clock, this will only
happen at below approx. 3kHz/3kBit), our board-verification team kept
complaining.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
Tested-by: Klaus Goger <klaus.goger@theobroma-systems.com>
The original clock/bitrate selection code for the rk_spi driver was a
bit limited, as it always selected a 99MHz input clock rate (which
would allow for a maximum bitrate of 49.5MBit/s), but returned -EINVAL
if a bitrate higher than 48MHz was requested.
To give us better control over the bitrate (i.e. add more operating
points, especially at "higher" bitrate---such as above 9MBit/s), we
try to choose 4x the maximum frequency (clamped to 50MBit) from the
DTS instead of 99MHz... for most use-cases this will yield a frequency
of 198MHz, but is flexible to go beyond this in future configurations.
This also rewrites the check to allow frequencies of up to half the
SPI module rate as bitrates and then clamps to whatever the DTS allows
as a maximum (board-specific) frequency and does away with the -EINVAL
when trying to select a bitrate (for cases that exceeded the hard
limit) and instead consistently clamps to the lower of the hard limit,
the soft limit for the SPI bus (from the DTS) or the soft limit for
the SPI slave device.
This replaces
"rockchip: spi: rk_spi: select 198MHz input to the SPI module for the RK3399"
"rockchip: spi: rk_spi: improve clocking code for the RK3399"
from earlier versions of this series.
Signed-off-by: Philipp Tomsich <philipp.tomsich@theobroma-systems.com>
.probe method has been assigned twice when declaring
a driver with U_BOOT_DRIVER(). Removed one of them.
Here is the last commit which had the duplicate entry:
"spi: omap3: Convert to driver model"
(sha1: 77b8d04854)
Signed-off-by: Suniel Mahesh <suniel.spartan@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
This is not currently implemented. Add support for this so that the
Chrome OS EC can be used reliably.
Signed-off-by: Moritz Fischer <moritz.fischer@ettus.com>
Acked-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@openedev.com>
Before using the cs_gpio, check if the GPIO is valid or not.
Signed-off-by: Wenyou Yang <wenyou.yang@atmel.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
