ARM: dts: add eMMC reset line for exynos5422-odroidxu3

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@samsung.com>
Signed-off-by: Kukjin Kim <kgene@kernel.org>

diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3.dts b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
index a519c86..790fb4c 100644 (file)
--- a/arch/arm/boot/dts/exynos5422-odroidxu3.dts
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
@@ -264,6 +264,13 @@
                };
        };
 
+       emmc_pwrseq: pwrseq {
+               pinctrl-0 = <&emmc_nrst_pin>;
+               pinctrl-names = "default";
+               compatible = "mmc-pwrseq-emmc";
+               reset-gpios = <&gpd1 0 1>;
+       };
+
        i2c_2: i2c@12C80000 {
                samsung,i2c-sda-delay = <100>;
                samsung,i2c-max-bus-freq = <66000>;
@@ -298,6 +305,7 @@
 
 &mmc_0 {
        status = "okay";
+       mmc-pwrseq = <&emmc_pwrseq>;
        broken-cd;
        card-detect-delay = <200>;
        samsung,dw-mshc-ciu-div = <3>;
@@ -330,6 +338,15 @@
        };
 };
 
+&pinctrl_1 {
+       emmc_nrst_pin: emmc-nrst {
+               samsung,pins = "gpd1-0";
+               samsung,pin-function = <0>;
+               samsung,pin-pud = <0>;
+               samsung,pin-drv = <0>;
+       };
+};
+
 &usbdrd_dwc3_0 {
        dr_mode = "host";
 };