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George Hilliard 2df286390a spi: mvebu_a3700_spi: add support for cs-gpios 
The device tree has a way to specify GPIO lines as chip selects.  From
the binding docs:

    So if for example the controller has 2 CS lines, and the cs-gpios
    property looks like this:

    cs-gpios = <&gpio1 0 0> <0> <&gpio1 1 0> <&gpio1 2 0>;

    Then it should be configured so that num_chipselect = 4 with the
    following mapping:

    cs0 : &gpio1 0 0
    cs1 : native
    cs2 : &gpio1 1 0
    cs3 : &gpio1 2 0

Add support for this, while retaining backward-compatibility with
existing device trees; the driver will preserve existing behavior if a
cs-gpios list is not given, or if a particular line is specified as <0>
(native).

This implementation is inspired by similar implementations in
neighboring drivers for other platforms: atmega, mxc, etc.

Signed-off-by: George Hilliard <ghilliar@amazon.com>
Reviewed-by: Stefan Roese <sr@denx.de>
2020-10-14 07:55:56 +02:00
..
adc adc: Drop dm.h header file 2020-08-03 22:19:54 -04:00
ata ata: dwc-ahci: change trace level for phy errors managed by uclass 2020-09-08 08:46:32 -04:00
axi common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
bios_emulator common: Drop linux/delay.h from common header 2020-05-18 21:19:23 -04:00
block xen: pvblock: Add initial support for para-virtualized block driver 2020-08-14 15:18:30 -04:00
board common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
bootcount bootcount_ext: Add Ext4 build dependency 2020-06-02 17:27:04 -04:00
bus bus: uniphier-system-bus: move hardware init from board files 2020-07-11 21:30:21 +09:00
button dm: button: add a driver for button driven by gpio 2020-07-28 19:30:39 -06:00
cache common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
clk clk: agilex: Additional membus writes for HPS PLL 2020-10-09 17:53:10 +08:00
core Kconfig: Move BOUNCE_BUFFER under driver options 2020-10-09 12:02:25 -04:00
cpu First set of u-boot-atmel features for 2021.01 cycle 2020-10-05 10:54:27 -04:00
crypto crypto/fsl: add RNG support 2020-07-27 14:16:29 +05:30
ddr imx8m: ddrphy_utils: Improve coding style 2020-07-27 14:02:28 +02:00
demo common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
dfu dfu: fix dfu tftp on sandbox 2020-09-01 14:47:43 +02:00
dma Merge tag 'ti-v2021.01-rc1' of https://gitlab.denx.de/u-boot/custodians/u-boot-ti 2020-10-12 07:26:57 -04:00
fastboot fastboot: getvar: fix partition-size return value 2020-09-01 14:47:43 +02:00
firmware firmware: smci: sandbox test for SCMI reset controllers 2020-09-30 11:55:24 -04:00
fpga arm: socfpga: agilex: Enable FPGA Full Reconfiguration support 2020-10-09 17:53:12 +08:00
gpio gpio: dw: Return output value when direction is out 2020-10-08 11:42:36 -04:00
hwspinlock common: Drop linux/bitops.h from common header 2020-05-18 21:19:23 -04:00
i2c Merge branch 'next' 2020-10-05 14:10:59 -04:00
input treewide: convert (void *)devfdt_get_addr() to dev_read_addr_ptr() 2020-07-25 14:46:57 -06:00
led led: gpio: Default to using node name if label is absent 2020-10-08 11:42:36 -04:00
mailbox mailbox: stm32_ipcc: Convert to use APIs which support live DT 2020-10-02 15:05:14 +02:00
memory memory: stm32-fmc2-ebi: add STM32 FMC2 EBI controller driver 2020-08-13 09:53:34 +02:00
misc i2c: eeprom: Use reg property instead of offset and size 2020-08-20 09:49:20 +02:00
mmc Merge branch 'next' 2020-10-05 14:10:59 -04:00
mtd mtd: nand: Add NAND controller driver for OcteonTX 2020-10-14 07:55:56 +02:00
net net: Add NIC controller driver for OcteonTX2 2020-10-14 07:55:56 +02:00
nvme nvme: Invalidate dcache before submitting admin cmd 2020-06-23 14:43:23 -04:00
pch common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
pci Merge branch 'next' 2020-10-05 14:10:59 -04:00
pci_endpoint Merge https://gitlab.denx.de/u-boot/custodians/u-boot-fsl-qoriq 2020-07-27 15:18:15 -04:00
phy Merge tag 'ti-v2021.01-rc1' of https://gitlab.denx.de/u-boot/custodians/u-boot-ti 2020-10-12 07:26:57 -04:00
pinctrl pinctrl: Add support for Kendryte K210 FPIOA 2020-10-08 11:42:36 -04:00
power dm: add cells_count parameter in *_count_phandle_with_args 2020-10-06 09:07:54 -06:00
pwm pwm: Add driver for Amlogic Meson PWM controller 2020-10-05 18:02:16 +02:00
qe net, qe: add DM support for QE UEC ethernet 2020-09-17 06:09:53 +02:00
ram ram: add ddr4 dual x8 configuration 2020-10-08 10:58:45 -04:00
remoteproc remoteproc: k3: Fix not calling dev_xxx with a device 2020-09-30 08:53:42 -04:00
reset dm: add cells_count parameter in *_count_phandle_with_args 2020-10-06 09:07:54 -06:00
rng rng: meson: make core clock optional 2020-09-28 09:38:11 +02:00
rtc treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
scsi common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
serial serial: uartlite: Add support to work with any endianness 2020-09-23 10:31:40 +02:00
smem soc: qualcomm: Fix not calling dev_err with a device 2020-09-30 08:53:43 -04:00
soc soc: soc_ti_k3: Add device identification for J7200 SoC 2020-08-11 20:34:46 +05:30
sound dm: acpi: Use correct GPIO polarity type in acpi_dp_add_gpio() 2020-09-25 11:27:14 +08:00
spi spi: mvebu_a3700_spi: add support for cs-gpios 2020-10-14 07:55:56 +02:00
spmi treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
sysreset sysreset: socfpga: agilex: Enable sysreset support 2020-10-09 17:53:11 +08:00
tee drivers: tee: broadcom: add optee based bnxt fw load driver 2020-07-29 10:37:11 -04:00
thermal thermal: imx_scu_thermal: prevent boot hang with zero pdata 2020-05-22 13:29:25 +02:00
timer First set of u-boot-atmel features for 2021.01 cycle 2020-10-05 10:54:27 -04:00
tpm tpm: cr50: Add ACPI support 2020-09-25 11:27:21 +08:00
ufs ufs: Drop dm.h header file 2020-08-03 22:19:54 -04:00
usb - mips: octeon: add support for DDR4 memory controller 2020-10-07 17:25:25 -04:00
video Merge branch 'next' 2020-10-05 14:10:59 -04:00
virtio virtio_blk: set log2blksz correctly 2020-08-24 14:11:31 -04:00
w1 treewide: convert devfdt_get_addr() to dev_read_addr() 2020-07-25 14:46:57 -06:00
w1-eeprom common: Drop log.h from common header 2020-05-18 21:19:18 -04:00
watchdog wdt: designware: fix timeout calculation due to expecting KHz 2020-10-08 11:42:36 -04:00
xen xen: Code style conformity 2020-08-24 14:11:31 -04:00
Kconfig xen: pvblock: Add initial support for para-virtualized block driver 2020-08-14 15:18:30 -04:00
Makefile fpga: kconfig: Rename SPL_FPGA_SUPPORT to SPL_FPGA 2020-09-23 10:31:41 +02:00