From 6a7c583f56b991235bafa5d015403e4ebdce810a Mon Sep 17 00:00:00 2001 From: Peng Fan Date: Thu, 27 Mar 2025 08:49:44 +0800 Subject: [PATCH] gpiolib: of: Add polarity quirk for s5m8767 [ Upstream commit 4e310626eb4df52a31a142c1360fead0fcbd3793 ] This is prepare patch for switching s5m8767 regulator driver to use GPIO descriptor. DTS for exynos5250 spring incorrectly specifies "active low" polarity for the DVS and DS line. But per datasheet, they are actually active high. So add polarity quirk for it. Signed-off-by: Peng Fan Reviewed-by: Linus Walleij Link: https://lore.kernel.org/r/20250327004945.563765-1-peng.fan@oss.nxp.com Signed-off-by: Bartosz Golaszewski Signed-off-by: Sasha Levin --- drivers/gpio/gpiolib-of.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index a0a2a0f75bba..c1e83b2926ae 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -203,6 +203,15 @@ static void of_gpio_try_fixup_polarity(const struct device_node *np, */ { "lantiq,pci-xway", "gpio-reset", false }, #endif +#if IS_ENABLED(CONFIG_REGULATOR_S5M8767) + /* + * According to S5M8767, the DVS and DS pin are + * active-high signals. However, exynos5250-spring.dts use + * active-low setting. + */ + { "samsung,s5m8767-pmic", "s5m8767,pmic-buck-dvs-gpios", true }, + { "samsung,s5m8767-pmic", "s5m8767,pmic-buck-ds-gpios", true }, +#endif #if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2005) /* * DTS for Nokia N900 incorrectly specified "active high"