This patch adds reset-gpios property to the eMMC slot, so the MMC driver
is able to properly reset eMMC card on system restart and thus fixes
system hang on software reboot.
Signed-off-by: Marek Szyprowski <m.szyprowski@xxxxxxxxxxx>
---
arch/arm/boot/dts/exynos4412-odroid-common.dtsi | 14 ++++++++++++++
1 file changed, 14 insertions(+)
diff --git a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
index ffcf17bbf63b..c97ffbf0a6be 100644
--- a/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
+++ b/arch/arm/boot/dts/exynos4412-odroid-common.dtsi
@@ -57,10 +57,18 @@
<19200000>;
};
+ emmc_pwrseq: pwrseq {
+ pinctrl-0 = <&sd1_cd>;
+ pinctrl-names = "default";
+ compatible = "mmc-pwrseq-emmc";
+ reset-gpios = <&gpk1 2 1>;
+ };
+
mmc@12550000 {
pinctrl-0 = <&sd4_clk &sd4_cmd &sd4_bus4 &sd4_bus8>;
pinctrl-names = "default";
vmmc-supply = <&ldo20_reg &buck8_reg>;
+ mmc-pwrseq = <&emmc_pwrseq>;
status = "okay";
num-slots = <1>;
@@ -392,6 +400,12 @@
};
};
+/* RSTN signal for eMMC */
+&sd1_cd {
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <0>;
+};
+
&pinctrl_1 {
gpio_power_key: power_key {
samsung,pins = "gpx1-3";
--
1.9.2
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