Commit f8d76c2c authored by Dmitry Torokhov's avatar Dmitry Torokhov Committed by Bartosz Golaszewski
Browse files

gpiolib: of: add polarity quirk for TSC2005 



DTS for Nokia N900 incorrectly specifies "active high" polarity for
the reset line, while the chip documentation actually specifies it as
"active low".  In the past the driver fudged gpiod API and inverted
the logic internally, but it was changed in d0d89493.

Fixes: d0d89493 ("Input: tsc2004/5 - switch to using generic device properties")
Signed-off-by: default avatarDmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: default avatarLinus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/ZoWXwYtwgJIxi-hD@google.com


Signed-off-by: default avatarBartosz Golaszewski <bartosz.golaszewski@linaro.org>
parent f07798d7

drivers/gpio/gpiolib-of.c

+8 −0
Original line number Diff line number Diff line
@@ -212,6 +212,14 @@ static void of_gpio_try_fixup_polarity(const struct device_node *np, 
		 * for the property.

		 */

		{ "lantiq,pci-xway",	"gpio-reset",	false },

#endif

#if IS_ENABLED(CONFIG_TOUCHSCREEN_TSC2005)

		/*

		 * DTS for Nokia N900 incorrectly specified "active high"

		 * polarity for the reset line, while the chip actually

		 * treats it as "active low".

		 */

		{ "ti,tsc2005",		"reset-gpios",	false },

#endif

	};

	unsigned int i;