linux-kernel - [PATCH v2 8/8] arm64: dts: rockchip: Enable SD-card interface on Radxa E20C

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Message-ID: <20250305194638.47187-1-ziyao@disroot.org>
Date: Wed,  5 Mar 2025 19:46:38 +0000
From: Yao Zi <ziyao@...root.org>
To: Ulf Hansson <ulf.hansson@...aro.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Shresth Prasad <shresthprasad7@...il.com>,
	Cristian Ciocaltea <cristian.ciocaltea@...labora.com>,
	Detlev Casanova <detlev.casanova@...labora.com>,
	Jonas Karlman <jonas@...boo.se>,
	Chukun Pan <amadeus@....edu.cn>
Cc: linux-mmc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-rockchip@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org,
	Yao Zi <ziyao@...root.org>
Subject: [PATCH v2 8/8] arm64: dts: rockchip: Enable SD-card interface on Radxa E20C

SD-card is available on Radxa E20C board.

Signed-off-by: Yao Zi <ziyao@...root.org>
---
 .../boot/dts/rockchip/rk3528-radxa-e20c.dts   | 34 +++++++++++++++++++
 1 file changed, 34 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
index 5346ef457c2a..a52a7924bb75 100644
--- a/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3528-radxa-e20c.dts
@@ -15,6 +15,10 @@ / {
 	model = "Radxa E20C";
 	compatible = "radxa,e20c", "rockchip,rk3528";
 
+	aliases {
+		mmc1 = &sdmmc;
+	};
+
 	chosen {
 		stdout-path = "serial0:1500000n8";
 	};
@@ -104,6 +108,18 @@ vcc5v0_sys: regulator-5v0-vcc-sys {
 		regulator-min-microvolt = <5000000>;
 		regulator-max-microvolt = <5000000>;
 	};
+
+	vccio_sd: regulator-vccio-sd {
+		compatible = "regulator-gpio";
+		gpios = <&gpio4 RK_PB6 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&sdmmc_vol_ctrl_h>;
+		regulator-name = "vccio_sd";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		states = <1800000 0x0>, <3300000 0x1>;
+		vin-supply = <&vcc5v0_sys>;
+	};
 };
 
 &pinctrl {
@@ -126,6 +142,12 @@ wan_led_g: wan-led-g {
 			rockchip,pins = <4 RK_PC0 RK_FUNC_GPIO &pcfg_pull_none>;
 		};
 	};
+
+	sdmmc {
+		sdmmc_vol_ctrl_h: sdmmc-vol-ctrl-h {
+			rockchip,pins = <4 RK_PB6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
 };
 
 &saradc {
@@ -133,6 +155,18 @@ &saradc {
 	status = "okay";
 };
 
+&sdmmc {
+	bus-width = <4>;
+	cap-mmc-highspeed;
+	cap-sd-highspeed;
+	disable-wp;
+	no-sdio;
+	sd-uhs-sdr104;
+	vmmc-supply = <&vcc_3v3>;
+	vqmmc-supply = <&vccio_sd>;
+	status = "okay";
+};
+
 &uart0 {
 	pinctrl-names = "default";
 	pinctrl-0 = <&uart0m0_xfer>;
-- 
2.48.1