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@khadas.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@5000000 {
 		};
 	};
 
+	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

Hi,

On Fri, 16 Jan 2026 10:36:11 +0800, Nick Xie wrote:
> 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.
> 
> 

Thanks, Applied to https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git (v6.20/arm64-dt)

[1/1] arm64: dts: amlogic: meson-s4-s905y4-khadas-vim1s: enable eMMC storage
      https://git.kernel.org/amlogic/c/1099b3b6ab01e481c5aaf6c74e9c8892c9636fe6

These changes has been applied on the intermediate git tree [1].

The v6.20/arm64-dt branch will then be sent via a formal Pull Request to the Linux SoC maintainers
for inclusion in their intermediate git branches in order to be sent to Linus during
the next merge window, or sooner if it's a set of fixes.

In the cases of fixes, those will be merged in the current release candidate
kernel and as soon they appear on the Linux master branch they will be
backported to the previous Stable and Long-Stable kernels [2].

The intermediate git branches are merged daily in the linux-next tree [3],
people are encouraged testing these pre-release kernels and report issues on the
relevant mailing-lists.

If problems are discovered on those changes, please submit a signed-off-by revert
patch followed by a corrective changeset.

[1] https://git.kernel.org/pub/scm/linux/kernel/git/amlogic/linux.git
[2] https://git.kernel.org/pub/scm/linux/kernel/git/stable/linux.git
[3] https://git.kernel.org/pub/scm/linux/kernel/git/next/linux-next.git

-- 
Neil

On Fri, Jan 16, 2026 at 3:36 AM Nick Xie <nick@khadas.com> wrote:
>
> 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@khadas.com>
Reviewed-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>