[PATCH AUTOSEL 6.1 04/26] gpiolib: of: add quirk for locating reset lines with legacy bindings

Sasha Levin
2022-12-24T01:29:54Z

From: Dmitry Torokhov <dmitry.torokhov@gmail.com>

[ Upstream commit fbbbcd177a27508a47c5136b31de5cf4c8d0ab1c ]

Some legacy mappings used "gpio[s]-reset" instead of "reset-gpios",
add a quirk so that gpiod API will still work on unmodified DTSes.

Reviewed-by: Daniel Thompson <daniel.thompson@linaro.org>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Dmitry Torokhov <dmitry.torokhov@gmail.com>
Signed-off-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/gpio/gpiolib-of.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index 7d4bbf6484bc..2b5d1b3095c7 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -382,9 +382,18 @@ static struct gpio_desc *of_find_gpio_rename(struct device_node *np,
*/
const char *compatible;
} gpios[] = {
+#if !IS_ENABLED(CONFIG_LCD_HX8357)
+ /* Himax LCD controllers used "gpios-reset" */
+ { "reset", "gpios-reset", "himax,hx8357" },
+ { "reset", "gpios-reset", "himax,hx8369" },
+#endif
#if IS_ENABLED(CONFIG_MFD_ARIZONA)
{ "wlf,reset", NULL, NULL },
#endif
+#if !IS_ENABLED(CONFIG_PCI_LANTIQ)
+ /* MIPS Lantiq PCI */
+ { "reset", "gpios-reset", "lantiq,pci-xway" },
+#endif

/*
* Some regulator bindings happened before we managed to
@@ -399,6 +408,13 @@ static struct gpio_desc *of_find_gpio_rename(struct device_node *np,
{ "wlf,ldo2ena", NULL, NULL }, /* WM8994 */
#endif

+#if IS_ENABLED(CONFIG_SND_SOC_TLV320AIC3X)
+ { "reset", "gpio-reset", "ti,tlv320aic3x" },
+ { "reset", "gpio-reset", "ti,tlv320aic33" },
+ { "reset", "gpio-reset", "ti,tlv320aic3007" },
+ { "reset", "gpio-reset", "ti,tlv320aic3104" },
+ { "reset", "gpio-reset", "ti,tlv320aic3106" },
+#endif
#if IS_ENABLED(CONFIG_SPI_GPIO)
/*
* The SPI GPIO bindings happened before we managed to
--
2.35.1