diff options
| author | Peng Fan <peng.fan@nxp.com> | 2025-03-27 08:49:44 +0800 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2025-06-27 11:11:28 +0100 |
| commit | c519f81e9c08a4d1744a96b58aaffc4b9c3ef713 (patch) | |
| tree | ca72455f0f0199b8f61f66e780bed9d82b16291b | |
| parent | 8975b40c07502f99b61bde9daa59575a6dfe4674 (diff) | |
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 <peng.fan@nxp.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/20250327004945.563765-1-peng.fan@oss.nxp.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
| -rw-r--r-- | drivers/gpio/gpiolib-of.c | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c index 626daedb0169..36f8c7bb79d8 100644 --- a/drivers/gpio/gpiolib-of.c +++ b/drivers/gpio/gpiolib-of.c @@ -215,6 +215,15 @@ 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" |