[PATCH] arm64: dts: rockchip: fix emmc reset polarity on px30-cobra
Jakob Unterwurzacher
jakobunt at gmail.com
Tue May 12 02:22:09 PDT 2026
Technically, the reset signal is active low - it's called RST_n after all.
But it is ignored completely unless RST_n_FUNCTION=1 (byte 162 in extcsd)
is set in the emmc. It is 0 per default.
For emmcs that have RST_n_FUNCTION=1 we failed like this:
[ 3.074480] mmc1: Failed to initialize a non-removable card
With this change they work normally.
Cc: stable at vger.kernel.org
Fixes: bb510ddc9d3e ("arm64: dts: rockchip: add px30-cobra base dtsi and board variants")
Signed-off-by: Jakob Unterwurzacher <jakob.unterwurzacher at cherry.de>
---
arch/arm64/boot/dts/rockchip/px30-cobra.dtsi | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/arch/arm64/boot/dts/rockchip/px30-cobra.dtsi b/arch/arm64/boot/dts/rockchip/px30-cobra.dtsi
index b7e669d8ba4d..90751b04f95c 100644
--- a/arch/arm64/boot/dts/rockchip/px30-cobra.dtsi
+++ b/arch/arm64/boot/dts/rockchip/px30-cobra.dtsi
@@ -35,7 +35,7 @@ emmc_pwrseq: emmc-pwrseq {
compatible = "mmc-pwrseq-emmc";
pinctrl-0 = <&emmc_reset>;
pinctrl-names = "default";
- reset-gpios = <&gpio1 RK_PB3 GPIO_ACTIVE_HIGH>;
+ reset-gpios = <&gpio1 RK_PB3 GPIO_ACTIVE_LOW>;
};
gpio-leds {
--
2.47.3
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