linux-kernel - [PATCH v1] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable eMMC storage

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Message-Id: <20260116023611.2033078-1-nick@khadas.com>
Date: Fri, 16 Jan 2026 10:36:11 +0800
From: Nick Xie <nick@...das.com>
To: neil.armstrong@...aro.org,
	khilman@...libre.com,
	jbrunet@...libre.com,
	martin.blumenstingl@...glemail.com,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-amlogic@...ts.infradead.org
Cc: krzk+dt@...nel.org,
	robh@...nel.org,
	conor+dt@...nel.org,
	xieqinick@...il.com,
	Nick Xie <nick@...das.com>
Subject: [PATCH v1] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable eMMC storage

Enable the on-board eMMC storage for Khadas VIM1S.

The VIM1S features a 16GB eMMC 5.1 module. This patch adds the
necessary regulators and the eMMC controller node.

Signed-off-by: Nick Xie <nick@...das.com>
---
 .../amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
index 79ffc703a2e99..4a66c1bec965e 100644
--- a/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
@@ -38,6 +38,11 @@ secmon_reserved: secmon@...0000 {
 		};
 	};
 
+	emmc_pwrseq: emmc-pwrseq {
+		compatible = "mmc-pwrseq-emmc";
+		reset-gpios = <&gpio GPIOB_9 GPIO_ACTIVE_LOW>;
+	};
+
 	sdio_32k: sdio-32k {
 		compatible = "pwm-clock";
 		#clock-cells = <0>;
@@ -80,6 +85,24 @@ vddio_sd: regulator-vddio-sd {
 				3300000 0>;
 	};
 
+	vddao_3v3: regulator-vddao-3v3 {
+		compatible = "regulator-fixed";
+		regulator-name = "VDDAO_3V3";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&main_5v>;
+		regulator-always-on;
+	};
+
+	vddio_ao1v8: regulator-vddio-ao1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "VDDIO_AO1V8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vddao_3v3>;
+		regulator-always-on;
+	};
+
 	/* SY8120B1ABC DC/DC Regulator. */
 	vddcpu: regulator-vddcpu {
 		compatible = "pwm-regulator";
@@ -136,6 +159,25 @@ vddcpu: regulator-vddcpu {
 	};
 };
 
+&emmc {
+	status = "okay";
+	pinctrl-0 = <&emmc_pins>, <&emmc_ds_pins>;
+	pinctrl-1 = <&emmc_clk_gate_pins>;
+	pinctrl-names = "default", "clk-gate";
+
+	bus-width = <8>;
+	cap-mmc-highspeed;
+	mmc-ddr-1_8v;
+	mmc-hs200-1_8v;
+	max-frequency = <200000000>;
+	non-removable;
+	disable-wp;
+
+	mmc-pwrseq = <&emmc_pwrseq>;
+	vmmc-supply = <&vddao_3v3>;
+	vqmmc-supply = <&vddio_ao1v8>;
+};
+
 &ethmac {
 	status = "okay";
 	phy-handle = <&internal_ephy>;
-- 
2.34.1