[PATCH v2 3/6] gpiolib: of: add quirk for IS31FL319X shutdown line

[Jun Yan]

According to the IS31FL319x datasheet[1], the SDB pin is active‑low.
However, existing device tree incorrectly configure it as active‑high.

Add a fixup to force the consumer active low for legacy device trees.

[1] https://lumissil.com/assets/pdf/core/IS31FL3196_DS.pdf

Signed-off-by: Jun Yan <jerrysteve1101 at gmail.com>
---
 drivers/gpio/gpiolib-of.c | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/drivers/gpio/gpiolib-of.c b/drivers/gpio/gpiolib-of.c
index ef1ac68b94b7..8a79aaadc9ea 100644
--- a/drivers/gpio/gpiolib-of.c
+++ b/drivers/gpio/gpiolib-of.c
@@ -194,6 +194,16 @@ 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_LEDS_IS31FL319X)
+		/*
+		 * According to the IS31FL319x datasheet, the SDB pin is active‑low.
+		 * However, existing device tree incorrectly configure it
+		 * as active‑high.
+		 */
+		{ "issi,is31fl3199",	"shutdown-gpios",	false },
+		{ "si-en,sn3190",	"shutdown-gpios",	false },
+		{ "si-en,sn3193",	"shutdown-gpios",	false },
+#endif
 #if IS_ENABLED(CONFIG_MTD_NAND_JZ4780)
 		/*
 		 * The rb-gpios semantics was undocumented and qi,lb60 (along with
-- 
2.54.0