Commit graph

10076 commits

Author SHA1 Message Date
Masahiro Yamada
3d3a74cc8c mmc: move MMC_SDHCI_IO_ACCESSORS to Kconfig
This is a user-unconfigurable option that is selected by the
drivers that need to overwrite SDHCI IO memory accessors.
(BCM2835 SDHCI seems the only driver that needs to do so.)

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-12-29 13:08:17 -05:00
Masahiro Yamada
45a68fe267 mmc: move some SDHCI related options to Kconfig
While I moved the options, I also renamed them so that they are all
prefixed with MMC_SDHCI_.

This commit was created in the following steps.

[1] Rename with the following command
find . -name .git -prune -o ! -path ./scripts/config_whitelist.txt \
-type f -print | xargs sed -i -e '
s/CONFIG_MMC_SDMA/CONFIG_MMC_SDHCI_SDMA/g
s/CONFIG_BCM2835_SDHCI/CONFIG_MMC_SDHCI_BCM2835/g
s/CONFIG_KONA_SDHCI/CONFIG_MMC_SDHCI_KONA/g
s/CONFIG_MV_SDHCI/CONFIG_MMC_SDHCI_MV/g
s/CONFIG_S5P_SDHCI/CONFIG_MMC_SDHCI_S5P/g
s/CONFIG_SPEAR_SDHCI/CONFIG_MMC_SDHCI_SPEAR/g
'

[2] create the Kconfig entries in drivers/mmc/Kconfig

[3] Move the options by the following command
tools/moveconfig.py -y MMC_SDHCI_SDMA MMC_SDHCI_BCM2835 \
MMC_SDHCI_KONA MMC_SDHCI_MV MMC_SDHCI_S5P MMC_SDHCI_SPEAR

[4] Sort drivers/mmc/Makefile for readability

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-12-29 13:08:16 -05:00
Masahiro Yamada
e1ce61fbba mmc: move CONFIG_SDHCI to Kconfig, renaming to CONFIG_MMC_SDHCI
Move CONFIG_SDHCI to Kconfig and rename it to CONFIG_MMC_SDHCI.
My motivation for the rename is, ultimately, to make all the MMC
options prefixed with MMC_ and SDHCI options with MMC_SDHCI_,
like Linux.

This commit was created as follows:

[1] Rename the config option with the following command:
find . -name .git -prune -o ! -path ./scripts/config_whitelist.txt \
-type f -print | xargs sed -i -e 's/CONFIG_SDHCI/CONFIG_MMC_SDHCI/g'

[2] create the entry for MMC_SDHCI in drivers/mmc/Kconfig

[3] run "tools/moveconfig.py -y MMC_SDHCI"

[4] add "depends on MMC_SDHCI" to existing SDHCI driver entries

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-12-29 13:08:12 -05:00
Masahiro Yamada
e298c46ac3 mmc: make MMC driver entries dependent on MMC
Currently, CONFIG_MMC is not related to any other options by
"depends on" or "select".  One of big advantages of using Kconfig
is automatic dependency tracking, but the current state is lacking
it.  As the first step, make the existing MMC driver entries depend
on MMC.

This commit was created by the following steps:

[1] Run the following script:

--------------------8<--------------------
rm -f tmp.txt

for d in $(find . -path './configs/*_defconfig')
do
        if grep -q -e 'CONFIG_MSM_SDHCI=y' $d ||
           grep -q -e 'CONFIG_ATMEL_SDHCI=y' $d ||
           grep -q -e 'CONFIG_ROCKCHIP_DWMMC=y' $d ||
           grep -q -e 'CONFIG_SH_SDHI=y' $d ||
           grep -q -e 'CONFIG_PIC32_SDHCI=y' $d ||
           grep -q -e 'CONFIG_ZYNQ_SDHCI=y' $d ||
           grep -q -e 'CONFIG_ROCKCHIP_SDHCI=y' $d ||
           grep -q -e 'CONFIG_MMC_UNIPHIER=y' $d ||
           grep -q -e 'CONFIG_SANDBOX_MMC=y' $d
        then
                echo CONFIG_MMC=y >> $d
                echo ${d#./configs/} >> tmp.txt
        fi
done

tools/moveconfig.py -y -s -d tmp.txt
rm tmp.txt
--------------------8<--------------------

[2] surround MMC driver entries with "if MMC" and "endif"

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-12-29 13:08:07 -05:00
Masahiro Yamada
c27269953b mmc: complete unfinished move of CONFIG_MMC
Commit 7a777f6d6f ("mmc: Add generic Kconfig option") created
a Kconfig entry for this option without any actual moves, then
commit 44c798799f ("sunxi: Use Kconfig CONFIG_MMC") moved
instances only for SUNXI.

We generally do not like such partial moves.  This kind of work
is automated by tools/moveconfig.py, so it is pretty easy to
complete this move.

I am adding "default ARM || PPC || SANDBOX" (suggested by Tom).
This shortens the configs and will ease new board porting.

This commit was created as follows:

[1] Edit Kconfig (remove the "depends on", add the "default",
    copy the prompt and help message from Linux)

[2] Run 'tools/moveconfig.py -y -s -r HEAD MMC'

Signed-off-by: Masahiro Yamada <yamada.masahiro@socionext.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
2016-12-29 13:08:07 -05:00
Ajay Bhargav
c7c47ca246 Update Maintainer and Author's email address
I am not longer using my old email address
"ajay.bhargav@einfochips.com". For U-Boot development email address is
now updated to contact@8051projects.net

Signed-off-by: Ajay Bhargav <contact@8051projects.net>
2016-12-27 11:24:17 -05:00
Zakharov Vlad
a5acafb255 timer: Support clocks via phandle
Earlier timer driver needed a clock-frequency property in compatible
device-tree nodes. Another way is to reference a clock via a phandle.

So now timer_pre_probe tries to get clock by reference through device
tree. In case it is impossible to get clock device through the
reference, clock-frequency property of the timer node is read to provide
backward compatibility.

Signed-off-by: Vlad Zakharov <vzakhar@synopsys.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-27 11:24:10 -05:00
Vignesh R
bd2e9714c8 regulator: fixed: Add support to handle enable-active-high DT property
Add support to handle enable-active-high DT property. This property is
used to drive the gpio controlling fixed regulator as active high when
claiming gpio line.

Signed-off-by: Vignesh R <vigneshr@ti.com>
Acked-by: Simon Glass <sjg@chromium.org>
2016-12-27 08:22:57 -05:00
Tom Rini
7ceae0eac0 Merge branch 'master' of git://git.denx.de/u-boot-spi 2016-12-23 18:41:32 -05:00
Tom Rini
0683e7e0f3 Merge branch 'master' of git://git.denx.de/u-boot-samsung 2016-12-23 10:17:22 -05:00
Jaehoon Chung
103e83a1b0 power: pmic: add the max8998 controller for DM
Add the max8998 controller for Driver model.
Samsung S5P series are using max8998 pmic controller.
In future, it should be supported the regulator framework.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Signed-off-by: Minkyu Kang <mk7.kang@samsung.com>
2016-12-22 13:34:01 +09:00
Michal Simek
9c4132b526 mmc: Extend dependencies for zynq sdhci
There is hard dependency on BLK and DM_MMC which is also used by ATMEL
and ROCKCHIP.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-12-22 07:08:52 +09:00
Jaehoon Chung
c942fc925e mmc: spear: remove the entire spear_sdhci.c file
Remove the entire spear_sdhci.c file.
There is no use case. This is dead codes.
Also there is no place to call "spear_sdhci_init()" anywhere.

Signed-off-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-12-22 07:08:52 +09:00
Jagan Teki
cb71c6d854 spi: Zap armada100_spi.c and env
armada100_spi.c and related env is zapping becuase
of "no DM conversion".

Cc: Ajay Bhargav <ajay.bhargav@einfochips.com>
Signed-off-by: Jagan Teki <jagan@openedev.com>
2016-12-21 12:18:47 +01:00
Jagan Teki
353f6a770f spi: Zap mpc52xx_spi.c, config and related code
armada100_spi.c, related config options and related codes
are zapping becuase of "no DM conversion".

Cc: Werner Pfister <Pfister_Werner@intercontrol.de>
Signed-off-by: Jagan Teki <jagan@openedev.com>
Reviewed-by: Tom Rini <trini@konsulko.com>
2016-12-21 12:14:37 +01:00
Tom Rini
7588bf9390 Merge branch 'master' of git://www.denx.de/git/u-boot-microblaze 2016-12-20 08:42:50 -05:00
Tom Rini
2346511961 Merge branch 'master' of git://git.denx.de/u-boot-i2c 2016-12-20 08:41:54 -05:00
Michal Simek
f2e70a0073 gpio: zynq: Remove empty line
Trivial coding style fix.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
2016-12-20 09:15:27 +01:00
Michal Simek
49c4c78e70 block: Move ceva driver to DM
This patch also includes ARM64 zynqmp changes:
- Remove platform non DM initialization
- Remove hardcoded sata base address

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-20 09:15:27 +01:00
Michal Simek
e8a016b537 dm: Add support for scsi/sata based devices
All sata based drivers are bind and corresponding block
device is created. Based on this find_scsi_device() is able
to get back block device based on scsi_curr_dev pointer.

intr_scsi() is commented now but it can be replaced by calling
find_scsi_device() and scsi_scan().

scsi_dev_desc[] is commented out but common/scsi.c heavily depends on
it. That's why CONFIG_SYS_SCSI_MAX_DEVICE is hardcoded to 1 and symbol
is reassigned to a block description allocated by uclass.
There is only one block description by device now but it doesn't need to
be correct when more devices are present.

scsi_bind() ensures corresponding block device creation.
uclass post_probe (scsi_post_probe()) is doing low level init.

SCSI/SATA DM based drivers requires to have 64bit base address as
the first entry in platform data structure to setup mmio_base.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-20 09:15:27 +01:00
Michal Simek
6516e3f253 net: xilinx: Use mdio_register_seq() to support multiple instances
axi_emac, emaclite and gem have the same issue with registering
multiple instances with mdio busses. mdio bus name has to be uniq but
drivers are setting up only one name for all.
Use mdio_register_seq() and pass dev->seq number to allow multiple
mdio instances registration.

Reported-by: Phani Kiran Kara <phanikiran.kara@gmail.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-12-20 07:40:04 +01:00
Marek Vasut
0b060eefd9 serial: 16550: Add Ingenic JZ4780 support
Add compatibility string for the Ingenic JZ4780 SoC, the necessary
UART enable bit into FCR and register shift. Neither are encoded
in the DTS coming from Linux, so we need to support it this way.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Cc: Daniel Schwierzeck <daniel.schwierzeck@gmail.com>
Cc: Paul Burton <paul.burton@imgtec.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-19 12:26:37 -05:00
Marek Vasut
79fd928188 serial: 16550: Add port type as driver data
Add driver data to each compatible string to identify the type of
the port. Since all the ports in the driver are entirely compatible
with 16550 for now, all are marked with PORT_NS16550. But, there
are ports which have specific quirks, like the JZ4780 UART, which
do not have any DT property to denote the quirks. Instead, Linux
uses the compatible string to discern such ports and enable the
necessary quirks.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
2016-12-19 12:26:37 -05:00
Marek Vasut
65f83802b7 serial: 16550: Add getfcr accessor
Add function which allows fetching the default FCR register setting
from platform data for DM , while retaining old behavior for non-DM
by returning UART_FCRVAL.

Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Tom Rini <trini@konsulko.com>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-19 12:26:36 -05:00
Bradley Bolen
77466267eb i2c: mv_i2c.c: Correct address endianness
0c0f719ad2 accidentally changed the
endianness of the i2c read and write addresses.  This was noticable when
accessing EEPROMs that use 2 byte addressing as the LSB was being sent
first.

Signed-off-by: Bradley Bolen <bradleybolen@gmail.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2016-12-19 09:32:00 +01:00
Tom Rini
8ea05705a7 Merge branch 'master' of git://www.denx.de/git/u-boot-imx
Migrate CONFIG_ARCH_USE_MEMSET/MEMCPY with this merge.

Signed-off-by: Tom Rini <trini@konsulko.com>
2016-12-18 17:43:20 -05:00
Tom Rini
0b4bc1b3ab Merge branch 'master' of git://git.denx.de/u-boot-spi 2016-12-16 18:32:43 -05:00
Jagan Teki
2da24fe551 i2c: mxc: Make 'no gpio pinctrl state' print as debug
Some I2C bus devicetree nodes, doesn't require to have
gpio pinctrl so replace the dev_info to debug so the
print never comes on the console and for bus that uses
gpio pinctrl anyway have dev_err.

Before:
------
U-Boot> i2c dev 1
Setting bus to 1
i2c bus 1 at 0x21a4000, no gpio pinctrl state.

After:
------
U-Boot> i2c dev 1
Setting bus to 1

Cc: Simon Glass <sjg@chromium.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Heiko Schocher <hs@denx.de>
2016-12-16 17:15:27 +01:00
Jagan Teki
65c92e4f39 i2c: mxc: Print hex instead of decimal for bus address
Better to print the hex value for bus address instead of
decimal, for more readbility on bus addressing.

Before:
------
U-Boot> i2c dev 1
Setting bus to 1
i2c bus 1 at 35274752, no gpio pinctrl state.

After:
------
U-Boot> i2c dev 1
Setting bus to 1
i2c bus 1 at 0x21a4000, no gpio pinctrl state.

Cc: Simon Glass <sjg@chromium.org>
Cc: Heiko Schocher <hs@denx.de>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Heiko Schocher <hs@denx.de>
2016-12-16 17:15:27 +01:00
Jagan Teki
72c8c10b73 i2c: Kconfig: Add SYS_I2C_MXC entry
Added kconfig for SYS_I2C_MXC driver.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Heiko Schocher <hs@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2016-12-16 17:15:27 +01:00
Jagan Teki
7db7455b53 video: Kconfig: Add VIDEO_IPV3 entry
Added kconfig entry for CONFIG_VIDEO_IPV3 driver.

Cc: Anatolij Gustschin <agust@denx.de>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2016-12-16 17:15:27 +01:00
Jagan Teki
1ed2570f7e dm: net: fec: Add .read_rom_hwaddr
Add .read_rom_hwaddr on dm eth_ops.

Cc: Stefano Babic <sbabic@denx.de>
Cc: Matteo Lisi <matteo.lisi@engicam.com>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2016-12-16 17:15:27 +01:00
Jagan Teki
567173a610 net: fec_mxc: Driver cleanups
- Remove exctra space
- Add space
- Add tab space
- Fix single line comments quotes
- Fix 'CHECK: Avoid CamelCase'
- Fix 'CHECK: Alignment should match open parenthesis'
- Fix 'WARNING: line over 80 characters'
- Re-arrage header include files

Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2016-12-16 17:15:27 +01:00
Jagan Teki
60752ca86a net: fec_mxc: Convert into driver model
This patch add driver model support for fec_mxc driver.

Cc: Simon Glass <sjg@chromium.org>
Cc: Joe Hershberger <joe.hershberger@ni.com>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
2016-12-16 17:15:27 +01:00
Jagan Teki
f54183e65d net: fec_mxc: Remove unneeded eth_device arg from fec_get_hwaddr
fec_get_hwaddr never used eth_device argument, hence removed.

Cc: Simon Glass <sjg@chromium.org>
Cc: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Michael Trimarchi <michael@amarulasolutions.com>
Acked-by: Joe Hershberger <joe.hershberger@ni.com>
Signed-off-by: Jagan Teki <jagan@amarulasolutions.com>
2016-12-16 17:15:27 +01:00
Patrick Bruenn
98d62e618b arm: imx: add i.MX53 Beckhoff CX9020 Embedded PC
Add CX9020 board based on mx53loco.
Add simplified imx53 base device tree from kernel v4.8-rc8, to reuse
serial_mxc with DTE and prepare for device tree migration of other
functions and imx53 devices.

The CX9020 differs from i.MX53 Quick Start Board by:
- use uart2 instead of uart1
- DVI-D connector instead of VGA
- no audio
- CCAT FPGA connected to emi
- enable rtc

Signed-off-by: Patrick Bruenn <p.bruenn@beckhoff.com>
2016-12-16 12:57:12 +01:00
Peng Fan
ef0afaa083 pinctrl: imx6: support i.MX6SLL
There two iomuxc for i.MX6SLL. One is normal IOMUXC, the other
is for IOMUXC_SNVS.

Signed-off-by: Peng Fan <peng.fan@nxp.com>
Cc: Stefano Babic <sbabic@denx.de>
Cc: Simon Glass <sjg@chromium.org>
Reviewed-by: Simon Glass <sjg@chromium.org>
2016-12-16 11:38:24 +01:00
Peng Fan
b2ebdd85d9 OCOTP: Update OCOTP driver to support i.MX6SLL
Add the i.MX6SLL support to OCOTP driver.

The i.MX6SLL reuses the i.MX6ULL fuse, bank 7 and bank8 have 4 words
each, and there is a hole between bank 5 and bank 6.

Signed-off-by: Ye Li <ye.li@nxp.com>
Signed-off-by: Peng Fan <peng.fan@nxp.com>
2016-12-16 11:38:24 +01:00
Priyanka Jain
8e62f1ee03 driver: fsl-mc: qbman: Add QBMAN 4.1 support
LS2080A SoC family has QBMAN ver 4.0 whereas newer
SoCs like LS2088A, LS1088A has QBMAN ver 4.1
QBMAN ver 4.0 and ver 4.1 supports dqrr size as 4 and 8 respectively.

Add support of
	to check QBMAN version based on SoC SVR
	update dqrr_size accordingly
	update code to support larger dqrr_size

Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Signed-off-by: Prabhakar Kushwaha <prabhakar.kushwaha@nxp.com>
Reviewed-by: York Sun <york.sun@nxp.com>
2016-12-15 11:57:05 -08:00
Cyrille Pitchen
9bcb018870 Revert "sf: Fix quad bit set for micron devices"
This reverts commit c56ae7519f.

Once the 'Quad Enable' bit is cleared in their Enhanced Volatile
Configuration Register (EVCR), Micron memories expect ALL commands to use
the SPI 4-4-4 protocol. Commands using SPI 1-y-z protocols are no longer
accepted.

Within the reverted commit, the write_evcr() function is implemented using
the spi_flash_write_common(), which is a shortcut for the
[ spi_flash_cmd_write_enable(), spi_flash_cmd_write(),
spi_flash_cmd_wait_ready() ] sequence.

Since the internal state of the Micron memory has been changed when the
spi_flash_cmd_write() function completes, the later call of the
spi_flash_cmd_wait_ready() function fails.

Indeed the SPI controller driver is not aware of the SPI protocol switch.

Further patches will fix the support of Micron QSPI memories.

Signed-off-by: Cyrille Pitchen <cyrille.pitchen@atmel.com>
[Rebase on master, use JEDEC_MFR(info) in place of idcode0]
Signed-off-by: Jagan Teki <jagan@openedev.com>
2016-12-15 18:33:16 +01:00
Phil Edworthy
db9225ba26 sf: Do not force the DT memory map size to exactly match the device
As long as the memory mapped size specifeid in the DT is the same or
bigger than the device size, it will work. So do not force the sizes
to be identical.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:28 +01:00
Fabien Parent
304decdd31 mtd: spi: don't return -1 when scan succeed
In spi_flash_scan, 'ret' is initialled to -1, but 'ret' is not always
used to store a return value, in that case, even when the function
succeed, an error (-1) will be returned.
Lets just return 0 if we hit the end of the function.

Signed-off-by: Fabien Parent <fparent@baylibre.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:28 +01:00
Phil Edworthy
6d72810c66 spi: cadence_qspi: Move DT prop code to match layout
Move the code to read the "sram-size" property into the other code
that reads properties from the node, rather than the SF subnode.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:28 +01:00
Phil Edworthy
22e63ff3a2 spi: cadence_qspi: Fix CS timings
The Cadence QSPI controller has specified overheads for the various CS
times that are in addition to those programmed in to the Device Delay
register. The overheads are different for the delays.

In addition, the existing code does not handle the case when the delay
is less than a SCLK period.

This change accurately calculates the additional delays in Ref clocks.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:27 +01:00
Phil Edworthy
3c56953219 spi: cadence_qspi: Remove returns from end of void functions
Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:27 +01:00
Phil Edworthy
7d403f284c spi: cadence_qspi: Use spi mode at the point it is needed
Instead of extracting mode settings and passing them as separate
args to another function, just pass the SPI mode as an arg.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:27 +01:00
Phil Edworthy
7e76c4b08a spi: cadence_qspi: Clean up the #define names
A lot of the #defines are for single bits in a register, where the
name has _MASK on the end. Since this can be used for both a mask
and the value, remove _MASK from them.

Whilst doing so, also remove the unnecessary brackets around the
constants.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:27 +01:00
Phil Edworthy
db37cc9c39 spi: cadence_qspi: Use #define for bits instead of bit shifts
Most of the code already uses #defines for the bit value, rather
than the shift required to get the value. This changes the remaining
code over.

Whislt at it, fix the names of the "Rd Data Capture" register defs.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:27 +01:00
Phil Edworthy
0ceb4d9e9a spi: cadence_qspi: Better debug information on the SPI clock rate
Show what the output clock rate actually is.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Acked-by: Marek Vasut <marek.vasut@gmail.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:27 +01:00
Phil Edworthy
32068c42a7 spi: cadence_qspi: Fix baud rate calculation
With the existing code, when the requested SPI clock rate is near
to the lowest that can be achieved by the hardware (max divider
of the ref clock is 32), the generated clock rate is wrong.
For example, with a 50MHz ref clock, when asked for anything less
than a 1.5MHz SPI clock, the code sets up the divider to generate
25MHz.

This change fixes the calculation.

Signed-off-by: Phil Edworthy <phil.edworthy@renesas.com>
Reviewed-by: Jagan Teki <jagan@openedev.com>
2016-12-15 16:57:27 +01:00