UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

gpio: vf610: set value before the direction to avoid a glitch 

We found a glitch when configuring the pad as output high. To avoid this
glitch, move the data value setting before direction config in the
function vf610_gpio_direction_output().

Fixes: 659d8a6231 ("gpio: vf610: add imx7ulp support")
Signed-off-by: Haibo Chen <haibo.chen@nxp.com>
[Bartosz: tweak the commit message]
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
This commit is contained in:
Haibo Chen 2023-10-18 11:00:17 +02:00 committed by Bartosz Golaszewski
parent 4302326197
commit fc363413ef
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
drivers/gpio/gpio-vf610.c
View File

@ -126,14 +126,14 @@ static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
unsigned long mask = BIT(gpio);
u32 val;
vf610_gpio_set(chip, gpio, value);
if (port->sdata && port->sdata->have_paddr) {
val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR);
val |= mask;
vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR);
}
vf610_gpio_set(chip, gpio, value);
return pinctrl_gpio_direction_output(chip->base + gpio);
}