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gpiolib: of: add polarity quirk for TSC2005

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[ Upstream commit f8d76c2c313c56d5cb894a243dff4550f048278d ]

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 d0d89493bff8.

Fixes: d0d89493bff8 ("Input: tsc2004/5 - switch to using generic device properties")
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Acked-by: Linus Walleij <linus.walleij@linaro.org>
Link: https://lore.kernel.org/r/ZoWXwYtwgJIxi-hD@google.com
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Dmitry Torokhov 2024-07-03 11:26:09 -07:00 committed by Greg Kroah-Hartman
parent 03b2e1c9de
commit 663e1b693b
1 changed files with 8 additions and 0 deletions
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8
drivers/gpio/gpiolib-of.c
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@ -173,6 +173,14 @@ static void of_gpio_try_fixup_polarity(const struct device_node *np,
*/
{ "himax,hx8357", "gpios-reset", false },
{ "himax,hx8369", "gpios-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;