The .supports_op() callback function returns true by default after
performing driver-specific checks. Therefore the driver cannot apply
the buswidth in devicetree.
Call spi_mem_default_supports_op() helper to handle the buswidth
in devicetree.
Fixes: 358f803ae2 ("spi: Add Socionext F_OSPI SPI flash controller driver")
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
in spi_mem_dtr_supports_op we have a check for allowing only even number
of bytes to be r/w. Odd bytes writing can be a concern while writing
data to a flash for example because 8 DTR mode doesn't support it.
However, reading ODD Bytes even though may not be physically possible
we can still allow for it because it will not have serious implications
on any critical registers being overwritten since they are just reads.
Cc: Vaishnav Achath <vaishnav.a@ti.com>
Cc: Pratyush Yadav <pratyush@kernel.org>
Cc: Vignesh Raghavendra <vigneshr@ti.com>
Tested-by: Nikhil M Jain <n-jain1@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This should have been op->data.buswidth instead as we check for octal
bus width for the data related ops
Also add explanation for why there is checks for 8D even data bytes
Cc: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Pratyush Yadav <ptyadav@amazon.de>
Tested-by: Nikhil M Jain <n-jain1@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Currently, in stm32_qspi_claim_bus(), QSPI_CR and QSPI_DCR registers
are saved in stm32_ospi_flash struct on first flash memory initialization
and restored on each flash accesses.
As the logic of spi-uclass.c changed since 'commit 741280e9ac
("spi: spi-uclass: Fix spi_claim_bus() speed/mode setup logic")'
set_speed() and set_mode() callbacks are called systematically when bus
speed or bus mode need to be updated, QSPI_CR and QSPI_DCR registers are
set accordingly.
So stm32_qspi_claim_bus() can be updated by removing QSPI_CR and QSPI_DCR
save/restore code and struct stm32_ospi_flash can be removed as well.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Use CONFIG_RCAR_64 to make the driver available on both
R-Car Gen3 and R-Car Gen4.
Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
The Freescale ESPI driver (CONFIG_FSL_ESPI) relies to the MPC85xx platform
(PowerPC) through arch/powerpc/include/asm/immap_85xx.h. The driver can't
compile on another architecture/platform.
Signed-off-by: Corentin Guillevic <corentin.guillevic@smile.fr>
On mpc832x, SPI can be either handled by CPU or QE.
In order to work in CPU mode, bit 17 of SPMODE has to
be set to 1, that bit is called OP.
Also, data is located at a different place than the one expected
by the driver today. In 8 bits mode with REV set, data to be
transmitted is located in the most significant byte while
received data is located in second byte. So perform the
necessary shifts.
In order to differentiate with other CPUs, a new compatible is
added for mpc832x: fsl,mpc832x-spi
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
It was incorrectly using an old priv->regs pointer, which was
initialized to zero. SPI resets won't happen on first call.
Signed-off-by: Jiajie Chen <c@jia.je>
Link: https://lore.kernel.org/r/20230227150938.211820-1-c@jia.je
Signed-off-by: Michal Simek <michal.simek@amd.com>
Original t20 slink could work with commands only
fully divisible by 8. This patch removes such
restriction, so commands of any bitlength now
can be passed and processed.
Tested-by: Andreas Westman Dorcsak <hedmoo@yahoo.com> # ASUS TF600T T30
Tested-by: Svyatoslav Ryhel <clamor95@gmail.com> # LG P895 T30
Tested-by: Thierry Reding <treding@nvidia.com> # T30 and T124
Signed-off-by: Svyatoslav Ryhel <clamor95@gmail.com>
Signed-off-by: Tom <twarren@nvidia.com>
- A fix for a long standing bug that has been exposed by commit
50128aeb0f ("cyclic: get rid of cyclic_init()") preventing 8xx boards
from booting since u-boot 2023.01
- A GPIO driver for powerpc 8xx chip
- Fixup for powerpc 8xx SPI driver
- A new powerpc 8xx board
- The two devices having that board.
This patch fixes the mpc8xx SPI driver:
- A stub callbacks for mode and speed,
- Use chip selects defined as GPIOs,
- Write proper value to disable relocation, other it fails on mpc885,
- Don't modify ports setup, ports can be different from one board to
another and are already set by board_early_init_r().
This patch was originally written by Charles Frey who's
email address is not valid anymore as he left the company.
Signed-off-by: Christophe Leroy <christophe.leroy@csgroup.eu>
Reviewed-by: FRANJOU Stephane <stephane.franjou@csgroup.eu>
This converts 1 usage of this option to the non-SPL form, since there is
no SPL_ARCH_VERSAL defined in Kconfig
Signed-off-by: Simon Glass <sjg@chromium.org>
This converts 2 usages of this option to the non-SPL form, since there is
no SPL_ZYNQMP_FIRMWARE defined in Kconfig
Signed-off-by: Simon Glass <sjg@chromium.org>
Fix the issue where some flash chips like cypress S25HS256T return the
value of the same register over and over in DAC mode.
For example in the TI K3-AM62x Processors refer [0] Technical Reference
Manual there is a layer of digital logic in front of the QSPI/OSPI
Drive when used in DAC mode. This is part of the Flash Subsystem (FSS)
which provides access to external Flash devices.
The FSS0_0_SYSCONFIG Register (Offset = 4h) has a BIT Field for
OSPI_32B_DISABLE_MODE which has a Reset value = 0. This means, OSPI 32bit
mode enabled by default.
Thus, by default controller operates in 32 bit mode causing it to always
align all data to 4 bytes from a 4byte aligned address. In some flash
chips like cypress for example if we try to read some regs in DAC mode
then it keeps sending the value of the first register that was requested
and inorder to read the next reg, we have to stop and re-initiate a new
transaction.
This causes wrong register values to be read than what is desired when
registers are read in DAC mode. Hence if the data.nbytes is very less
then prefer STIG mode for such small reads.
[0] https://www.ti.com/lit/ug/spruiv7a/spruiv7a.pdf
Tested-by: Vaishnav Achath <vaishnav.a@ti.com>
Signed-off-by: Dhruva Gole <d-gole@ti.com>
[jagan: add tab space for comments]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Setup the Addr bit field while issuing register reads in STIG mode. This
is needed for example flashes like cypress define in their transaction
table that to read any register there is 1 cmd byte and a few more address
bytes trailing the cmd byte. Absence of addr bytes will obviously fail
to read correct data from flash register that maybe requested by flash
driver because the controller doesn't even specify which address of the
flash register the read is being requested from.
Signed-off-by: Dhruva Gole <d-gole@ti.com>
Reviewed-by: Pratyush Yadav <pratyush@kernel.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Introduce Socionext F_OSPI controller driver. This controller is used to
communicate with slave devices such as SPI flash memories. It supports
4 slave devices and up to 8-bit wide bus, but supports master mode only.
This driver uses spi-mem framework for SPI flash memory access, and
can only operate indirect access mode and single data rate mode.
Signed-off-by: Kunihiko Hayashi <hayashi.kunihiko@socionext.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Use log_warning() instead of printf() to print out driver information
Signed-off-by: Pengfei Fan <fanpengfei1@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
Fix some typos in spi drivers
Signed-off-by: Pengfei Fan <fanpengfei1@eswincomputing.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
At this point, the remaining places where we have a symbol that is
defined as CONFIG_... are in fairly odd locations. While as much dead
code has been removed as possible, some of these locations are simply
less obvious at first. In other cases, this code is used, but was
defined in such a way as to have been missed by earlier checks. Perform
a rename of all such remaining symbols to be CFG_... rather than
CONFIG_...
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
This value is never changed by boards, so just rename it to
SPI_IDLE_VAL to fit with the rest of the code.
Signed-off-by: Tom Rini <trini@konsulko.com>
Stop using CONFIG_SANDBOX_ARCH and use CONFIG_SANDBOX instead. For the
SPI related defines, set them directly in Kconfig. This now empties
arch/sandbox/include/asm/config.h.
Cc: Simon Glass <sjg@chromium.org>
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
The rest of the unmigrated CONFIG symbols in the CONFIG_SYS namespace do
not easily transition to Kconfig. In many cases they likely should come
from the device tree instead. Move these out of CONFIG namespace and in
to CFG namespace.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
cadence_qspi_apb_enable_linear_mode() has a weak function defined, so no
need to gaurd this under if (CONFIG_IS_ENABLED(ARCH_VERSAL)).
In cadence_qspi_apb_write_execute(), enable linear mode is called twice by
mistake, remove extra one.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20221129114134.18909-1-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
When we pass the 64-bit address to read/write, only lower 32-bit
address is getting updated. Program the upper 32-bit address in the
DMA destination memory address MSBs register, which can handle upto
44-bit destination address.
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Link: https://lore.kernel.org/r/20221125104413.26140-1-venkatesh.abbarapu@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
The driver was using an incorrect value for GQSPI_LPBK_DLY_ADJ_DLY_1
tapdelay for Versal for frequencies above 100MHz. Change it from 2 to 1
based on the recommended value in IP spec.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Reviewed-by: Dhruva Gole <d-gole@ti.com>
Link: https://lore.kernel.org/r/20221123090451.11409-1-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
When cadence_qspi_versal_flash_reset() function is called in mini
u-boot where there is no firmware support, it is missing defines for
macro's BOOT_MODE_POR_0 & BOOT_MODE_POR_1. Remove them and replace with
already define macro's which have same values as these.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20221116141155.14788-3-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
These files reference SZ_ macros without including <linux/sizes.h>,
correct this.
Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
As CONFIG_ARCH_BCM6858 is replaced with CONFIG_BCM6858, update the
driver Kconfig to use the new config symbol.
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
As CONFIG_ARCH_BCM68360 is replaced with CONFIG_BCM6856, update the
driver Kconfig to use the new config symbol.
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
As CONFIG_ARCH_BCM63158 is replaced with CONFIG_BCM63158, update the
Kconfig to use the new config symbol.
Signed-off-by: William Zhang <william.zhang@broadcom.com>
Reviewed-by: Philippe Reynes <philippe.reynes@softathome.com>
Add Nuvoton NPCM BMC Peripheral SPI controller driver.
NPCM750 include two general-purpose SPI interface.
Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
This function is already defined in spi.h but no implementation of it
currently exists in the tree. The implementation is based on the static
function spi_set_speed_mode(). The function prototype is modified so
that an success or error condition can be returned to the caller.
Signed-off-by: Paul Barker <paul.barker@sancloud.com>
Reviewed-by: Heinrich Schuchardt <xypron.glpk@gmx.de>
Fix the following sparse and compile time warning triggered with W=1:
drivers/spi/zynqmp_gqspi.c:286:6:
warning: no previous prototype for 'zynqmp_qspi_set_tapdelay'
[-Wmissing-prototypes]
Signed-off-by: Venkatesh Yadav Abbarapu <venkatesh.abbarapu@amd.com>
Link: https://lore.kernel.org/r/20221004053730.25602-1-venkatesh.abbarapu@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
xilinx:
- Add support for new Versal NET SOC
zynqmp:
- Use mdio bus for ethernet phy description
- Wire ethernet phy reset via i2c-gpio
versal:
- Config cleanup
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Merge tag 'xilinx-for-v2023.01-rc1-v2' of https://gitlab.denx.de/u-boot/custodians/u-boot-microblaze into next
Xilinx changes for v2023.01-rc1 (round 2)
xilinx:
- Add support for new Versal NET SOC
zynqmp:
- Use mdio bus for ethernet phy description
- Wire ethernet phy reset via i2c-gpio
versal:
- Config cleanup
This patch adds support for spi-mem controller found on newer MediaTek SoCs
This controller supports Single/Dual/Quad SPI mode.
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Daniel Golle <daniel@makrotopia.org>
Signed-off-by: SkyLake.Huang <skylake.huang@mediatek.com>
Globally replace all occurances of WATCHDOG_RESET() with schedule(),
which handles the HW_WATCHDOG functionality and the cyclic
infrastructure.
Signed-off-by: Stefan Roese <sr@denx.de>
Reviewed-by: Simon Glass <sjg@chromium.org>
Tested-by: Tom Rini <trini@konsulko.com> [am335x_evm, mx6cuboxi, rpi_3,dra7xx_evm, pine64_plus, am65x_evm, j721e_evm]
Driver can configure the SPI clock frequnecy to the
target value of "spi-max-frequency" property in
the device tree. The frequency is divided from HCLK,
200MHz. Usually, the ASPEED SPI clock frequency range
is between 12.5MHz and 100MHz. On AST2600, the lowest
SPI clock frequency can be about 780kHz.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
If "decoded-ranges" is defined in the device tree, the
driver will apply the decoded address ranges from this
property to the controller during probe stage.
This patch refers to the following OpenBMC u-boot patch.
https://patchwork.ozlabs.org/project/openbmc/list/?series=306969
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
There are some known HW problems about decoded
range register configurations on existing AST2500 and
AST2600 platforms. Additional callback function,
adjust_decoded_sz, is added to solve these problems
on each platform. Besides, aspeed_spi_trim_decoded_size
function is added to modify overall decoded address
size for fitting the maximum AHB decoded size.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
From the HW point of view, the performance of
command read mode is greater than user mode slightly.
Thus, dirmap read framework is introduced to achieve
this goal. In dirmap_create, command read mode is
configured. Usually, the decoded address area with flash
size is assigned to each CS. CPU can thus access the
SPI flash as normal memory in dirmap_read function.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
This adds the dirmap API originally introduced in
Linux commit aa167f3fed0c
("spi: spi-mem: Add a new API to support direct mapping").
This also includes several follow-up patches and fixes.
Changes from Linux include:
* Added Kconfig option
* Changed struct device to struct udevice
* Changed struct spi_mem to struct spi_slave
This patch is obtained from the following patch
https://patchwork.ozlabs.org/project/uboot/patch/20210205043924.149504-3-seanga2@gmail.com/
The corresponding Linux kernel SHA1 is aa167f3fed0c.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Signed-off-by: Sean Anderson <seanga2@gmail.com>
Acked-by: Pratyush Yadav <p.yadav@ti.com>
Although AST2400 is EOL officially, in order to achieve
sustainability and completeness, AST2400 part is added.
For AST2400,
- Five CSs are supported by FMC controller.
- SPI1 controller only supports single CS and there is
no address segment address register. The CE control
register of SPI1 is located at the offset 0x04 and
the 4-byte address mode control bit is bit 13 of
this register.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Add ASPEED BMC FMC/SPI memory controller driver with
spi-mem interface for AST2500 and AST2600 platform.
There are three SPI memory controllers embedded in an ASPEED SoC.
- FMC: Named as Firmware Memory Controller. After AC on, MCU ROM
fetches initial device boot image from FMC chip select(CS) 0.
- SPI1: Play the role of a SPI Master controller. Or, there is a
dedicated path for HOST(X86) to access its BIOS flash mounted
under BMC. spi-aspeed-smc.c implements the control sequence when
SPI1 is a SPI master.
- SPI2: It is a pure SPI flash controller. For most scenarios, flashes
mounted under it are for pure storage purpose.
ASPEED SPI controller supports 1-1-1, 1-1-2 and 1-1-4 SPI flash mode.
Three types of command mode are supported, normal mode, command
read/write mode and user mode.
- Normal mode: Default mode. After power on, normal read command 03h or
13h is used to fetch boot image from SPI flash.
- AST2500: Only 03h command can be used after power on
or reset.
- AST2600: If FMC04[6:4] is set, 13h command is used,
otherwise, 03h command.
The address length is decided by FMC04[2:0].
- Command mode: SPI controller can send command and address
automatically when CPU read/write the related remapped
or decoded address area. The command used by this mode
can be configured by FMC10/14/18[23:16]. Also, the
address length is decided by FMC04[2:0]. This mode will
be implemented in the following patch series.
- User mode: It is a traditional and pure SPI operation, where
SPI transmission is controlled by CPU. It is the main
mode in this patch.
Each SPI controller in ASPEED SoC has its own decoded address mapping.
Within each SPI controller decoded address, driver can assign a specific
address region for each CS of a SPI controller. The decoded address
cannot overlap to each other. With normal mode and command mode, the
decoded address accessed by the CPU determines which CS is active.
When user mode is adopted, the CS decoded address is a FIFO, CPU can
send/receive any SPI transmission by accessing the related decoded
address for the target CS.
This patch only implements user mode initially. Command read/write
mode will be implemented in the following patches.
Signed-off-by: Chin-Ting Kuo <chin-ting_kuo@aspeedtech.com>
Few lines are extented to next line though they can fit in 80 character
limit, align them to single line. No functional change.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20220825125906.11581-6-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
As the flash sizes are increasing day by day, QSPI can have devices of
size > 512MB. In qspi driver we are trying to read all the data at once
using DMA.
The DMA descriptor destination size is only 29bits long.
QSPIDMA_DST_SIZE 0xFF0F0804
BITS: 1:0 Reserved to keep word alignment
BITS: 28:2 Number of 4-byte words the DMA will transfer
BITS: 31:29 Reserved: Returns 0 when read, writes ignored
So we can only transfer data of 0x1FFFFFF0(512MB minus 4bytes) bytes.
Anything above will overflow this register and will ignore higher bits
above 29 bits.
Change the DMA functionality if the requested size is greater than or
equal to 512MB to read 256MB chunks.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20220825125906.11581-5-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Add support for io-mode transfers. This is necessary for UBIFS to work
properly with spi-nor devices. The driver will work in IO mode when
"has-io-mode" is passed from device tree instead of DMA.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@amd.com>
Link: https://lore.kernel.org/r/20220825125906.11581-4-ashok.reddy.soma@amd.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
As per driver model we should enumerate plat structure only in
of_to_plat() and should be used only in probe(). Copy required
plat structure info into priv structure in probe() and use priv
structure across the driver. So replace plat with priv structure across
the driver.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220824113847.7482-4-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
In cadence_spi_read_id we are using STIG mode to read flash id's.
Call cadence_qspi_apb_command_read_setup() to setup cmd, addr and data
bus width properly before cadence_qspi_apb_command_read().
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220824113847.7482-3-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
In cadence_spi_probe, cadence_qspi_versal_flash_reset() is called to reset
the flash device. Looks like there is a mistake in previous series of
patches where it is defined as cadence_spi_versal_flash_reset() but
called as cadence_qspi_versal_flash_reset. Since there is a weak function
defined with the same name this issue was not caught.
Fix the issue by renaming cadence_spi_versal_flash_reset as
cadence_qspi_versal_flash_reset().
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220824113847.7482-2-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
The compatible values used for device nodes representing Renesas Reduced
Pin Count Interfaces were based on preliminary versions of the Device
Tree Bindings.
Correct them in both DTSi files and drivers, to match the final DT
Bindings.
Note that there are no DT bindings for RPC-IF on RZ/A1 yet, hence the
most logical SoC-specific value is used, without specifying a
family-specific value.
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
When programming qspi flash speed we need to check the requested flash
speed not to exceed the spi max frequency. In the current implementation
we are checking qspi ref clk instead. This commit fixes the issue by
checking the requested speed and programs the specified max frequency.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1657893679-20039-5-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Add support_ops function zynq_qspi_mem_exec_op to check controller
supported operations by spi-mem framework. Current default support ops
function does not allow dummy buswidth no more than 1, unless we are
using buswidth is 4 for TX.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1657893679-20039-4-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Fix dummy bytes calculation incase of valid dummy bytes when dummy
buswidth is > 1. Current dummy bytes calculation does not provide
correct dummy values for dummy buswidth > 1.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1657893679-20039-3-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Add child pre probe function in the driver. Update max_hz of priv from
spi_slave structure.
Signed-off-by: Siva Durga Prasad Paladugu <siva.durga.paladugu@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1657893679-20039-2-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Add support_ops function to check controller supported operations by
spi-mem framework. Current default support ops function does not allow
dummy buswidth no more than 1, unless we are using buswidth is 4 for TX.
In order to support dummy buswidth > 1 by spi-nor framework we are adding
explicit support_ops to check controller supported operations.
Fix dummy bytes calculation incase of valid dummy bytes when dummy
buswidth is > 1. Current dummy bytes calculation does not provide
correct dummy values for dummy buswidth > 1.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1657954727-31972-3-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Add support for spi memory operations for xilinx AXI qspi driver.
This provides an high-level interface to execute SPI memory
operations by the controller.
Remove existing spi transfer based implementation and use
spi memory based exec_op() implementation for qspi IO operations.
Simplified existing startup_block implementation.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/1657954727-31972-2-git-send-email-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
The SPI controllers in the Allwinner F1Cx00 series of SoCs are
compatible to the H3 IP. The only difference in the integration is
the missing mod clock in the F1C100, instead the SPI clock is directly
derived from the AHB clock.
We *should* be able to model this through the DT, but the addition of
get_rate() requires quite some refactoring, so it's not really worth in
this simple case: We programmed both the PLL_PERIPH to 600 MHz and the
PLL/AHB divider to 3 in the SPL, so we know the SPI base clock is 200
MHz. Since we used a hard coded fixed clock rate of 24 MHz for all the
other SoCs so far, we can as well do the same for the F1C100.
Define the SPI input clock and maximum frequency differently when
compiling for the F1C100 SoC.
Also adjust the power-of-2 divider programming, because that uses a
"minus one" encoding, compared to the other SoCs.
This allows to enable SPI flash support for the F1C100 boards.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
The current SPI clock divider calculation has two problems:
- We use a normal round-down division, which results in a divider
typically being too small, resulting in a too high frequency on the bus.
- The calculaction for the power-of-two divider is very inaccurate, and
again rounds down, which might lead to wild bus frequencies.
This wasn't a real problem so far, since most chips can handle slightly
higher bus frequencies just fine. Also the actual speed was mostly lost
anyway, due to release_bus() reseting the device. And the power-of-2
calculation was probably never used, because it only applies to
frequencies below 47 KHz.
However this will become a problem for the F1C100s support, due to its
much higher base frequency.
Calculate a safe divider correctly (using round-up), and re-use that
value when calculating the power-of-2 value. We also separate the
maximum frequency and the input clock on the way, since they will be
different for the F1C100s.
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
As George rightfully pointed out [1], the spi-sunxi driver programs the
speed and mode settings only when the respective functions are called,
but this gets lost over a call to release_bus(). That asserts the
reset line, thus forces each SPI register back to its default value.
Adding to that, trying to program SPI_CCR and SPI_TCR might be pointless
in the first place, when the reset line is still asserted (before
claim_bus()), so those setting won't apply most of the time. In reality
I see two nested claim_bus() calls for the first use, so settings between
the two would work (for instance for the initial "sf probe"). However
later on the speed setting is not programmed into the hardware anymore.
So far we get away with that default frequency, because that is a rather
tame 24 MHz, which most SPI flash chips can handle just fine.
Move the actual register programming into a separate function, and use
.set_speed and .set_mode just to set the variables in our priv structure.
Then we only call this new function in claim_bus(), when we are sure
that register accesses actually work and are preserved.
[1] https://lore.kernel.org/u-boot/20210725231636.879913-17-me@yifangu.com/
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reported-by: George Hilliard <thirtythreeforty@gmail.com>
The current detection of RX FIFO depth seems to be not reliable, and
XCH will self-clear when a transfer is done.
Check XCH bit when polling for transfer finish.
Signed-off-by: Icenowy Zheng <uwu@icenowy.me>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
When the requested flash speed is 0, the baudrate division for the
requested speed causing drop in the performance. So set the ospi flash
to operate at max frequency when requested speed is zero.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220512100535.16364-6-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
On versal platform, enable apb linear mode for apb read and write
execute operations amd disable it when using dma reads. This is done by
xilinx_pm_request() secure calls when CONFIG_ZYNQMP_FIRMWARE is enabled,
else we use direct raw reads and writes in case of mini U-Boot.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220512100535.16364-5-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
When flash operated at non default mode like DDR, flash need to be reset
to operate in SDR mode to read flash ids by spi-nor framework. Reset the
flash to the default state before using the flash. This reset is handled
by a gpio driver, in case of mini U-Boot as gpio driver is disabled, we
do raw read and write access by the registers.
Versal platform utilizes spi calibration for read delay programming, so
incase by default read delay property is set in DT. We make sure not to
use read delay from DT by overwriting read_delay with -1.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220512100535.16364-4-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Add support for cadence ospi driver for Versal platform. This driver
provides support for DMA read operation which utilizes cadence qspi
driver.
If "cdns,is-dma" DT property is specified use dma for read operation
from cadence_qspi driver. As cadence_qspi_apb_dma_read() is defined in
cadence_ospi_versal driver add a weak function defination in
cadence_qspi driver.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220512100535.16364-3-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
Move all the cadence macros from cadence_qspi_apb.c to cadence_qspi.h
file.
Signed-off-by: T Karthik Reddy <t.karthik.reddy@xilinx.com>
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Link: https://lore.kernel.org/r/20220512100535.16364-2-ashok.reddy.soma@xilinx.com
Signed-off-by: Michal Simek <michal.simek@amd.com>
The GXP supports 3 separate SPI interfaces to accommodate the system
flash, core flash, and other functions. The SPI engine supports variable
clock frequency, selectable 3-byte or 4-byte addressing and a
configurable x1, x2, and x4 command/address/data modes. The memory
buffer for reading and writing ranges between 256 bytes and 8KB. This
driver supports access to the core flash.
Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>
Replace reference to the correct name STMicroelectronics
Signed-off-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Reviewed-by: Heiko Schocher <hs@denx.de>
Reviewed-by: Patrice Chotard <patrice.chotard@foss.st.com>
The nxp_fspi_default_setup() is only ever called from nxp_fspi_probe(),
where the IP clock are initially disabled. Drop the second disabling of
clock to prevent clock enable/disable imbalance reported by clock core:
"
clk qspi_root_clk already disabled
"
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
There is a TX-FIFO and Shift Register empty(TFES) status
bit in spi controller. This commit checks the TFES bit
to wait the TX transfer completes.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Signed-off-by: Satoru Okamoto <okamoto.satoru@socionext.com>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
DMSTART bit must not be set while there is active transfer.
This commit sets the DMSTART bit only when the transfer begins.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Signed-off-by: Satoru Okamoto <okamoto.satoru@socionext.com>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
synquacer_cs_set() function does not wait the chip select
is deasserted when the driver sets the DMSTOP to deselect
the slave.
This commit checks the Slave Select Released(SRS) bit to wait
until the slave is deselected.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Signed-off-by: Satoru Okamoto <okamoto.satoru@socionext.com>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
"busy" variable is ORed without being initialized,
must be zeroed before use.
Signed-off-by: Masahisa Kojima <masahisa.kojima@linaro.org>
Signed-off-by: Satoru Okamoto <okamoto.satoru@socionext.com>
Acked-by: Jassi Brar <jaswinder.singh@linaro.org>
Move legacy spi_get_bus_and_cs() code to _spi_get_bus_and_cs().
Add new spi_get_bus_and_cs() implementation which rely on DT
for speed and mode and don't need any drv_name nor dev_name
parameters. This will prepare the ground for next patch.
Update all callers to use _spi_get_bus_and_cs() to keep the
same behavior.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Cc: Marek Behun <marek.behun@nic.cz>
Cc: Jagan Teki <jagan@amarulasolutions.com>
Cc: Vignesh R <vigneshr@ti.com>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Ramon Fried <rfried.dev@gmail.com>
Cc: Lukasz Majewski <lukma@denx.de>
Cc: Marek Vasut <marex@denx.de>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Cc: Stefan Roese <sr@denx.de>
Cc: "Pali Rohár" <pali@kernel.org>
Cc: Konstantin Porotchkin <kostap@marvell.com>
Cc: Igal Liberman <igall@marvell.com>
Cc: Bin Meng <bmeng.cn@gmail.com>
Cc: Pratyush Yadav <p.yadav@ti.com>
Cc: Sean Anderson <seanga2@gmail.com>
Cc: Anji J <anji.jagarlmudi@nxp.com>
Cc: Biwen Li <biwen.li@nxp.com>
Cc: Priyanka Jain <priyanka.jain@nxp.com>
Cc: Chaitanya Sakinam <chaitanya.sakinam@nxp.com>
Waiting for SR_BUSY bit when receiving a new command is not needed.
SR_BUSY bit is already managed in the previous command treatment.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Currently, SR_TCF flag is checked in case there is data, this criteria
is not correct.
SR_TCF flags is set when programmed number of bytes have been transferred
to the memory device ("bytes" comprised command and data send to the
SPI device).
So even if there is no data, we must check SR_TCF flag.
Signed-off-by: Patrice Chotard <patrice.chotard@foss.st.com>
Reviewed-by: Patrick Delaunay <patrick.delaunay@foss.st.com>
Add a mask parameter to control the lookup of the PCI region from which
the mapping can be made.
Signed-off-by: Andrew Scull <ascull@google.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Evolve dm_pci_map_bar() to include an offset and length parameter. These
allow a portion of the memory to be mapped and range checks to be
applied.
Passing both the offset and length as zero results in the previous
behaviour and this is used to migrate the previous callers.
Signed-off-by: Andrew Scull <ascull@google.com>
Reviewed-by: Bin Meng <bmeng.cn@gmail.com>
Add Nuvoton NPCM BMC Flash Interface Unit(FIU) SPI master
controller driver using SPI-MEM interface.
The FIU supports single, dual or quad communication interface.
The FIU controller driver provides flash access in UMA(User
Mode Access) mode by using an indirect address/data mechanism.
the dts node is followed upstream kernel dts name.
Signed-off-by: Jim Liu <JJLIU0@nuvoton.com>
Signed-off-by: Stanley Chu <yschu@nuvoton.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
[Jagan: fixed the Kconfig, Makefile order]
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Use the spi_mem_default_supports_op() core helper in order to take into
account the buswidth specified by the user in device tree.
Fixes: 24c8ff4684 ("spi: Add Atmel QuadSPI driver")
Signed-off-by: Tudor Ambarus <tudor.ambarus@microchip.com>
Add missing include for dm/device_compat.h. Without this include the
SFC driver fails to compile because dev_err and dev_dbg are not
defined.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>
The i.MX8M Mini and i.MX8M Plus flexspi IPs are compatible with one
another, however the linux kernel DT uses separate compatible string
for each SoC. Add the missing i.MX8MP compatible into this driver.
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Fabio Estevam <festevam@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
This is a little tricky since SoCFPGA has code to determine this as
runtime. Introduce a guard variable for platforms to select if they
have a static value to use. Then for ARCH_SOCFPGA, call
cm_get_qspi_controller_clk_hz() and otherwise continue the previous
behavior.
Cc: Jagan Teki <jagan@amarulasolutions.com>
Signed-off-by: Tom Rini <trini@konsulko.com>
A big part is the DM pinctrl driver, which allows us to get rid of quite
some custom pinmux code and make the whole port much more robust. Many
thanks to Samuel for that nice contribution! There are some more or less
cosmetic warnings about missing clocks right now, I will send the trivial
fixes for that later.
Another big chunk is the mkimage upgrade, which adds RISC-V and TOC0
(secure images) support. Both features are unused at the moment, but I
have an always-secure board that will use that once the DT lands in the
kernel.
On top of those big things we have some smaller fixes, improving the
I2C DM support, fixing some H6/H616 early clock setup and improving the
eMMC boot partition support.
The gitlab CI completed successfully, including the build test for all
161 sunxi boards. I also boot tested on a A64, A20, H3, H6, and F1C100
board. USB, SD card, eMMC, and Ethernet all work there (where applicable).
This is now handled automatically by the pinctrl driver.
Signed-off-by: Samuel Holland <samuel@sholland.org>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
