[PATCH 4/4] ARM: dts: exynos5422-odroidxu3: add eMMC reset line

Marek Szyprowski
2015-01-28T13:59:55Z

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>
---
arch/arm/boot/dts/exynos5422-odroidxu3.dts | 13 ++++++++++++-
1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/arch/arm/boot/dts/exynos5422-odroidxu3.dts b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
index a519c863248d..bafbc4e19adc 100644
--- a/arch/arm/boot/dts/exynos5422-odroidxu3.dts
+++ b/arch/arm/boot/dts/exynos5422-odroidxu3.dts
@@ -298,13 +298,15 @@

&mmc_0 {
status = "okay";
+ reset-gpios = <&gpd1 0 0>;
+ reset-invered;
broken-cd;
card-detect-delay = <200>;
samsung,dw-mshc-ciu-div = <3>;
samsung,dw-mshc-sdr-timing = <0 4>;
samsung,dw-mshc-ddr-timing = <0 2>;
pinctrl-names = "default";
- pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4 &sd0_bus8>;
+ pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus4 &sd0_bus8 &emmc_nrst>;
bus-width = <8>;
cap-mmc-highspeed;
};
@@ -330,6 +332,15 @@
};
};

+&pinctrl_1 {
+ emmc_nrst: emmc-nrst {
+ samsung,pins = "gpd1-0";
+ samsung,pin-function = <0>;
+ samsung,pin-pud = <0>;
+ samsung,pin-drv = <0>;
+ };
+};
+
&usbdrd_dwc3_0 {
dr_mode = "host";
};
--
1.9.2