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kernel_samsung_a53x/drivers/gpio
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Billy Tsai 537a6560b4 gpio: aspeed: Add the flush write to ensure the write complete. 
[ Upstream commit 1bb5a99e1f3fd27accb804aa0443a789161f843c ]

Performing a dummy read ensures that the register write operation is fully
completed, mitigating any potential bus delays that could otherwise impact
the frequency of bitbang usage. E.g., if the JTAG application uses GPIO to
control the JTAG pins (TCK, TMS, TDI, TDO, and TRST), and the application
sets the TCK clock to 1 MHz, the GPIO's high/low transitions will rely on
a delay function to ensure the clock frequency does not exceed 1 MHz.
However, this can lead to rapid toggling of the GPIO because the write
operation is POSTed and does not wait for a bus acknowledgment.

Fixes: 361b79119a4b ("gpio: Add Aspeed driver")
Reviewed-by: Andrew Jeffery <andrew@codeconstruct.com.au>
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
Link: https://lore.kernel.org/r/20241008081450.1490955-2-billy_tsai@aspeedtech.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2024-11-23 23:21:51 +01:00
..
gpio-74x164.c gpio: 74x164: Enable output pins after registers are reset 2024-11-18 23:18:30 +01:00
gpio-74xx-mmio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-104-dio-48e.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-104-idi-48.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-104-idio-16.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-adnp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-adp5520.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-adp5588.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-aggregator.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-altera-a10sr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-altera.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-amd-fch.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-amd8111.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-amdpt.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-arizona.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-aspeed-sgpio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-aspeed.c gpio: aspeed: Add the flush write to ensure the write complete. 2024-11-23 23:21:51 +01:00
gpio-ath79.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-bcm-kona.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-bd9571mwv.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-bd70528.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-bd71828.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-brcmstb.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-bt8xx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-cadence.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-clps711x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-creg-snps.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-crystalcove.c gpio: crystalcove: Use -ENOTSUPP consistently 2024-11-19 11:32:45 +01:00
gpio-cs5535.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-da9052.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-da9055.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-davinci.c gpio: davinci: fix lazy disable 2024-11-23 23:21:46 +01:00
gpio-dln2.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-dwapb.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-eic-sprd.c gpio: eic-sprd: Clear interrupt after set the interrupt type 2024-11-18 12:13:07 +01:00
gpio-em.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ep93xx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-exar.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-f7188x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ftgpio010.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ge.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-gpio-mm.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-grgpio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-gw-pld.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-hlwd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-htc-egpio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ich.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-intel-mid.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-iop.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-it87.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ixp4xx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-janz-ttl.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-kempld.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-logicvc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-loongson.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-loongson1.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-lp873x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-lp3943.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-lp87565.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-lpc18xx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-lpc32xx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-madera.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-max730x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-max732x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-max3191x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-max7300.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-max7301.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-max77620.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-max77650.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mb86s7x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mc9s08dz60.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mc33880.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-menz127.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-merrifield.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ml-ioh.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mlxbf.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mlxbf2.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mm-lantiq.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mmio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mockup.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-moxtet.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mpc8xxx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mpc5200.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-msic.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mt7621.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mvebu.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mxc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-mxs.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-octeon.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-omap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-palmas.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pca953x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pca9570.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pcf857x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pch.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pci-idio-16.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pcie-idio-24.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pisosr.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pl061.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pmic-eic-sprd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-pxa.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-raspberrypi-exp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-rc5t583.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-rcar.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-rda.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-rdc321x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-reg.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-regmap.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sa1100.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sama5d2-piobu.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sch.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sch311x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sifive.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-siox.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sl28cpld.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sodaville.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-spear-spics.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sprd.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-sta2x11.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-stmpe.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-stp-xway.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-syscon.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tb10x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tc3589x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tegra.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tegra186.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-thunderx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-timberdale.c gpio: timberdale: Fix potential deadlock on &tgpio->lock 2024-11-08 11:26:16 +01:00
gpio-tpic2810.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tps6586x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tps65086.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tps65218.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tps65910.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tps65912.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tps68470.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-tqmx86.c gpio: tqmx86: store IRQ trigger type and unmask status separately 2024-11-19 14:19:03 +01:00
gpio-ts4800.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ts4900.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ts5500.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-twl4030.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-twl6040.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ucb1400.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-uniphier.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-vf610.c gpio: vf610: set value before the direction to avoid a glitch 2024-11-08 11:26:20 +01:00
gpio-viperboard.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-vr41xx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-vx855.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-wcd934x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-wcove.c gpio: wcove: Use -ENOTSUPP consistently 2024-11-19 11:32:45 +01:00
gpio-winbond.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-wm831x.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-wm8350.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-wm8994.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-ws16c48.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-xgene-sb.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-xgene.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-xgs-iproc.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-xilinx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-xlp.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-xra1403.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-xtensa.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-zevio.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-zx.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpio-zynq.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib-acpi.c gpiolib: acpi: Ignore touchpad wakeup on GPD G1619-04 2024-11-18 12:13:02 +01:00
gpiolib-acpi.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib-cdev.c gpiolib: cdev: Ignore reconfiguration without direction 2024-11-23 23:21:16 +01:00
gpiolib-cdev.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib-devres.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib-legacy.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib-of.c Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib-of.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib-sysfs.c gpiolib: sysfs: Fix error handling on failed export 2024-11-18 12:11:45 +01:00
gpiolib-sysfs.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
gpiolib.c gpio: prevent potential speculation leaks in gpio_device_get_desc() 2024-11-23 23:21:15 +01:00
gpiolib.h Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
Kconfig gpio: tqmx86: fix typo in Kconfig label 2024-11-19 14:19:02 +01:00
Makefile Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00
TODO Import A536BXXU9EXDC 2024-06-15 16:02:09 -03:00