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gpiolib: of: Add polarity quirk for s5m8767

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[ 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>
This commit is contained in:
Peng Fan
2025-03-27 08:49:44 +08:00
committed by Greg Kroah-Hartman
parent 5505ec191f
commit 6a7c583f56
1 changed files with 9 additions and 0 deletions
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9
drivers/gpio/gpiolib-of.c
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@@ -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"