From 162f2db394a0efb270db3d93475ce466794a8eef Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Fri, 15 Jul 2016 10:12:49 +0200 Subject: [PATCH] ARM: dts: exynos: Properly select eMMC HighSpeed mode on Odroid XU Exynos5410 supports eMMC version 4.41 so HS200 is the top mode which should be configured. This is reflected in usage of "samsung,exynos5250-dw-mshc" compatible. However Odroid XU DTS contained also property "mmc-hs400-1_8v" which is parsed by MMC core therefore resulting in mixed configuration. MMC core set HS400 but dwmmc_exynos driver did not configure the data strobe for HS400 DDR mode. Removal of HS400 properties fixes semi-random mmc errors during boot: mmc_host mmc0: Bus speed (slot 0) = 400000000Hz (slot req 200000000Hz, actual 200000000HZ div = 1) mmc0: mmc_select_hs400 failed, error -84 mmc0: error -84 whilst initialising MMC card Signed-off-by: Krzysztof Kozlowski Reviewed-by: Alim Akhtar --- arch/arm/boot/dts/exynos5410-odroidxu.dts | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm/boot/dts/exynos5410-odroidxu.dts b/arch/arm/boot/dts/exynos5410-odroidxu.dts index d9499310a301..f6d135245a4b 100644 --- a/arch/arm/boot/dts/exynos5410-odroidxu.dts +++ b/arch/arm/boot/dts/exynos5410-odroidxu.dts @@ -447,14 +447,11 @@ samsung,dw-mshc-ciu-div = <3>; samsung,dw-mshc-sdr-timing = <0 4>; samsung,dw-mshc-ddr-timing = <0 2>; - samsung,dw-mshc-hs400-timing = <0 2>; - samsung,read-strobe-delay = <90>; pinctrl-names = "default"; pinctrl-0 = <&sd0_clk &sd0_cmd &sd0_bus1 &sd0_bus4 &sd0_bus8 &sd0_cd>; bus-width = <8>; cap-mmc-highspeed; mmc-hs200-1_8v; - mmc-hs400-1_8v; vmmc-supply = <&ldo20_reg>; vqmmc-supply = <&ldo11_reg>; }; -- 2.20.1