linux-kernel - [PATCH 3/3] ARM: dts: rockchip: phycore: Support UHS mode for SD card on phyCORE-RK3288 RDK

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Date:   Tue, 13 Feb 2018 10:44:34 +0100
From:   Daniel Schultz <d.schultz@...tec.de>
To:     heiko@...ech.de, robh+dt@...nel.org, mark.rutland@....com,
        linux@...linux.org.uk, linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH 3/3] ARM: dts: rockchip: phycore: Support UHS mode for SD card on phyCORE-RK3288 RDK

From: Wadim Egorov <w.egorov@...tec.de>

The phyCORE-RK3288 RDK could enable SD3.0 card but need vdd_io_sd to
support the voltage range from 1.8V to 3.3V.
And we have also to add relevant UHS modes to the sdmmc node.
Let's also turn off the vdd_io_sd regulator in suspend state.

Signed-off-by: Wadim Egorov <w.egorov@...tec.de>
Signed-off-by: Daniel Schultz <d.schultz@...tec.de>
---
 arch/arm/boot/dts/rk3288-phycore-rdk.dts  | 4 ++++
 arch/arm/boot/dts/rk3288-phycore-som.dtsi | 5 ++---
 2 files changed, 6 insertions(+), 3 deletions(-)

diff --git a/arch/arm/boot/dts/rk3288-phycore-rdk.dts b/arch/arm/boot/dts/rk3288-phycore-rdk.dts
index ecb26f0..985743f 100644
--- a/arch/arm/boot/dts/rk3288-phycore-rdk.dts
+++ b/arch/arm/boot/dts/rk3288-phycore-rdk.dts
@@ -265,6 +265,10 @@
 	disable-wp;
 	pinctrl-names = "default";
 	pinctrl-0 = <&sdmmc_clk &sdmmc_cmd &sdmmc_cd &sdmmc_bus4>;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
 	vmmc-supply = <&vdd_sd>;
 	vqmmc-supply = <&vdd_io_sd>;
 	status = "okay";
diff --git a/arch/arm/boot/dts/rk3288-phycore-som.dtsi b/arch/arm/boot/dts/rk3288-phycore-som.dtsi
index 5eae477..f13bcb1 100644
--- a/arch/arm/boot/dts/rk3288-phycore-som.dtsi
+++ b/arch/arm/boot/dts/rk3288-phycore-som.dtsi
@@ -336,11 +336,10 @@
 				regulator-name = "vdd_io_sd";
 				regulator-always-on;
 				regulator-boot-on;
-				regulator-min-microvolt = <3300000>;
+				regulator-min-microvolt = <1800000>;
 				regulator-max-microvolt = <3300000>;
 				regulator-state-mem {
-					regulator-on-in-suspend;
-					regulator-suspend-microvolt = <3300000>;
+					regulator-off-in-suspend;
 				};
 			};
 		};
-- 
2.7.4