gpiolib: of: Add polarity quirk for s5m8767

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>

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index eb667f8f1ead4f7e8a75804af3253bf4bf3a1ad3..f29143c71e9db61a6ad6d45d64e88a3f3f2d4fa7 100644 (file)
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -222,6 +222,15 @@ 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"