From 3a6a6d0a8b660c9a075c981e40405cc67b145972 Mon Sep 17 00:00:00 2001 From: Krzysztof Kozlowski Date: Sat, 9 Mar 2019 16:00:38 +0100 Subject: [PATCH] ARM: dts: exynos: Add support for UHS-I SD cards on Arndale Octa The Exynos5420's Mobile Storage Host supports SD cards in UHS-I standard (SD specification v3.0), with 1.8 V signaling in SD UHS DDR50. Adjust the regulator and add necessary capability properties. Change the SDR and DDR timings to match values in Insignal v3.4 Android kernel. Tested with SD UHS-I card in SD UHS DDR50 mode. Signed-off-by: Krzysztof Kozlowski --- arch/arm/boot/dts/exynos5420-arndale-octa.dts | 9 ++++++--- 1 file changed, 6 insertions(+), 3 deletions(-) diff --git a/arch/arm/boot/dts/exynos5420-arndale-octa.dts b/arch/arm/boot/dts/exynos5420-arndale-octa.dts index b12286d545b6..de0a6840dfbc 100644 --- a/arch/arm/boot/dts/exynos5420-arndale-octa.dts +++ b/arch/arm/boot/dts/exynos5420-arndale-octa.dts @@ -441,7 +441,7 @@ ldo13_reg: LDO13 { regulator-name = "PVDD_APIO_MMCOFF_2V8"; - regulator-min-microvolt = <2800000>; + regulator-min-microvolt = <1800000>; regulator-max-microvolt = <2800000>; }; @@ -701,14 +701,17 @@ status = "okay"; card-detect-delay = <200>; samsung,dw-mshc-ciu-div = <3>; - samsung,dw-mshc-sdr-timing = <2 3>; - samsung,dw-mshc-ddr-timing = <1 2>; + samsung,dw-mshc-sdr-timing = <0 4>; + samsung,dw-mshc-ddr-timing = <0 2>; pinctrl-names = "default"; pinctrl-0 = <&sd2_clk &sd2_cmd &sd2_cd &sd2_bus1 &sd2_bus4>; vmmc-supply = <&ldo19_reg>; vqmmc-supply = <&ldo13_reg>; bus-width = <4>; cap-sd-highspeed; + sd-uhs-sdr50; + sd-uhs-sdr104; + sd-uhs-ddr50; }; &pinctrl_0 { -- 2.20.1