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

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commit fc363413ef8ea842ae7a99e3caf5465dafdd3a49 upstream.

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>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Haibo Chen
2023-10-18 11:00:17 +02:00
committed by Greg Kroah-Hartman
parent 6c3a72d4ae
commit 7e29dadf26
1 changed files with 2 additions and 2 deletions
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4
drivers/gpio/gpio-vf610.c
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@@ -127,14 +127,14 @@ static int vf610_gpio_direction_output(struct gpio_chip *chip, unsigned gpio,
unsigned long mask = BIT(gpio); unsigned long mask = BIT(gpio);
u32 val; u32 val;
vf610_gpio_set(chip, gpio, value);
if (port->sdata && port->sdata->have_paddr) { if (port->sdata && port->sdata->have_paddr) {
val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR); val = vf610_gpio_readl(port->gpio_base + GPIO_PDDR);
val |= mask; val |= mask;
vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR); vf610_gpio_writel(val, port->gpio_base + GPIO_PDDR);
} }
vf610_gpio_set(chip, gpio, value);
return pinctrl_gpio_direction_output(chip->base + gpio); return pinctrl_gpio_direction_output(chip->base + gpio);
} }