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dd4cf53f98
u-boot-brain/drivers
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Rasmus Villemoes dd4cf53f98 gpio: mpc8xxx: don't do RMW on gpdat register when setting value 
The driver correctly handles reading back the value of an output gpio
by reading from the shadow register for output, and from gpdat for
inputs.

Unfortunately, when setting the value of some gpio, we do a RMW cycle
on the gpdat register without taking the shadow register into account,
thus accidentally setting other output gpios (at least those whose
value cannot be read back) to 0 at the same time.

When changing a gpio from input to output, we still need to make sure
it initially has the requested value. So, the procedure is

- update the shadow register
- compute the new gpdir register
- write the bitwise and of the shadow and new gpdir register to gpdat
- write the new gpdir register

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
2020-03-31 10:06:52 -04:00
..
adc dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
ata Revert "ata: fsl_ahci: Add sata DM support for Freescale powerpc socs" 2020-02-25 10:16:05 +05:30
axi dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
bios_emulator bios_emulator: remove stray break 2019-08-09 22:24:02 +08:00
block dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
board drivers: board: Add get_fit_loadable() 2020-01-07 11:13:24 -05:00
bootcount bootcount: add a DM i2c eeprom backing store for bootcount 2020-01-10 10:25:13 -05:00
cache common: Move hang() to the same header as panic() 2020-01-24 23:06:49 +05:30
clk x86: remove dead code in intel_clk_get_rate() 2020-03-05 18:19:40 +08:00
core dm: core: Add a flag for power domain control on device removal 2020-03-02 19:47:38 -07:00
cpu Move strtomhz() to vsprintf.h 2019-12-02 18:23:09 -05:00
crypto crypto: make mod_exp_sw() static 2020-01-25 12:04:36 -05:00
ddr sandbox conversion to SDL2 2020-02-11 10:58:41 -05:00
demo SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
dfu dm: core: Require users of devres to include the header 2020-02-05 19:33:46 -07:00
dma dma-mapping: move dma_map_(un)single() to <linux/dma-mapping.h> 2020-02-19 21:27:30 +08:00
fastboot fastboot: mt85xx: add command to flash/erase emmc hwpart 2020-01-25 12:04:36 -05:00
firmware dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
fpga dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
gpio gpio: mpc8xxx: don't do RMW on gpdat register when setting value 2020-03-31 10:06:52 -04:00
hwspinlock dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
i2c i2c: designware_i2c: Correct the selection of speed mode 2020-02-18 08:16:45 +01:00
input input: Move input.o to be built only in some cases 2019-11-19 17:43:04 -05:00
led dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
mailbox dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
memory SPDX: Convert all of our single license tags to Linux Kernel style 2018-05-07 09:34:12 -04:00
misc misc: k3_avs: Fix possible NULL pointer deference 2020-02-26 18:35:29 +05:30
mmc mmc: am654_sdhci: Implement workaround for card detect 2020-03-09 08:33:16 +08:00
mtd mtd: nand: Fix on-die ecc issues in arasan_nfc driver 2020-02-28 12:04:10 +01:00
net armv8/ls1046ardb: RGMII ports require internal delay 2020-03-30 08:06:52 +05:30
nvme dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
pch x86: Allow removal of standard PCH drivers 2019-12-15 11:44:16 +08:00
pci pci-host-ecam-generic: access config space independent of system-wide bus id 2020-03-30 08:11:56 +05:30
pci_endpoint pci_ep: Fix Coverity warning 2019-08-07 15:31:04 -04:00
phy dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
pinctrl pinctrl: stmfx: update the result type of dm_i2c_reg_read 2020-02-13 18:47:00 +01:00
power dm: arm64: ls1046a: add i2c DM support 2020-03-30 08:12:13 +05:30
pwm pwm: rk_pwm: Make PWM driver to support all Rockchip Socs 2019-12-06 00:06:23 +08:00
qe crc32: Use the crc.h header for crc functions 2019-12-02 18:23:08 -05:00
ram ram: rockchip: Fix Kconfig dependency for RAM_ROCKCHIP_DEBUG 2020-02-13 10:10:50 -05:00
remoteproc dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
reset sandbox conversion to SDL2 2020-02-11 10:58:41 -05:00
rng drivers/rng: add Amlogic hardware RNG driver 2020-03-11 08:29:58 +01:00
rtc rtc: m41t62: add compatible for m41st87 2020-03-01 22:07:32 +01:00
scsi scsi: Add dma direction member to command structure 2019-10-23 20:47:12 -04:00
serial serial: mcfuart: renaming to a more appropriate name 2020-03-13 09:29:50 -04:00
smem dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
soc dma-mapping: move dma_map_(un)single() to <linux/dma-mapping.h> 2020-02-19 21:27:30 +08:00
sound dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
spi dm: core: Drop the inclusion of linux/compat.h in dm.h 2020-02-05 21:48:22 -07:00
spmi dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
sysreset dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
tee dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
thermal thermal: ti-bandgap: Fix adc value datatype 2020-01-20 10:10:28 +05:30
timer dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
tpm sandbox conversion to SDL2 2020-02-11 10:58:41 -05:00
ufs dma-mapping: move dma_map_(un)single() to <linux/dma-mapping.h> 2020-02-19 21:27:30 +08:00
usb sunxi: Move common defconfig options to Kconfig 2020-03-18 18:25:00 +05:30
video video: meson: keep power domain up after booting 2020-03-02 19:47:38 -07:00
virtio dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
w1 dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
w1-eeprom dm: core: Create a new header file for 'compat' features 2020-02-05 19:33:46 -07:00
watchdog watchdog: Handle timer wrap around 2020-03-16 11:25:12 +01:00
Kconfig dm: rng: Add random number generator(rng) uclass 2020-01-07 18:08:21 +01:00
Makefile Kconfig: Rename CONFIG_SPL_DMA_SUPPORT to CONFIG_SPL_DMA 2020-01-15 19:50:27 -05:00