[PATCH] Ask a question about why can't use GPIOAO: GPIO_TEST_N
Zhang Ning
zhangn1985 at qq.com
Wed Jul 13 19:07:05 PDT 2022
first this is not a code review, just ask a question.
I started to enable MagicBox M16S, and sent patches for review.
but leds are not enabled.
I have tried, and found gpioao: GPIO_TEST_N can control led on off.
thus I add it to dts:
leds {
compatible = "gpio-leds";
led-white {
color = <LED_COLOR_ID_WHITE>;
function = LED_FUNCTION_POWER;
gpios = <&gpio_ao GPIO_TEST_N GPIO_ACTIVE_HIGH>;
default-state = "keep";
};
};
but failed with error -22.
and simply change GPIO_TEST_N to GPIOAO_2, no error.
thus find pinctrl driver doesn't allow to use this gpio.
why?
Signed-off-by: Zhang Ning <zhangn1985 at qq.com>
---
drivers/pinctrl/meson/pinctrl-meson-gxl.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/pinctrl/meson/pinctrl-meson-gxl.c b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
index 51408996255b..fb5fa88b30c7 100644
--- a/drivers/pinctrl/meson/pinctrl-meson-gxl.c
+++ b/drivers/pinctrl/meson/pinctrl-meson-gxl.c
@@ -820,7 +820,7 @@ static struct meson_bank meson_gxl_periphs_banks[] = {
static struct meson_bank meson_gxl_aobus_banks[] = {
/* name first last irq pullen pull dir out in */
- BANK("AO", GPIOAO_0, GPIOAO_9, 0, 9, 0, 16, 0, 0, 0, 0, 0, 16, 1, 0),
+ BANK("AO", GPIOAO_0, GPIO_TEST_N, 0, 9, 0, 16, 0, 0, 0, 0, 0, 16, 1, 0),
};
static struct meson_pinctrl_data meson_gxl_periphs_pinctrl_data = {
--
2.35.1
More information about the linux-amlogic
mailing list