[PATCH v1 0/2] arm64: dts: meson-s4: add support for Khadas VIM1S

[PATCH v1 0/2] arm64: dts: meson-s4: add support for Khadas VIM1S

[Nick Xie]

This series adds initial support for the Khadas VIM1S single board computer.

The Khadas VIM1S is based on the Amlogic S905Y4 (S4 family) SoC.
It features:
 - 2GB LPDDR4 RAM
 - 16GB eMMC 5.1 storage
 - 32MB SPI flash
 - 100 Base-T Ethernet
 - AP6256 Wireless (802.11 a/b/g/n/ac, BT5.0)
 - HDMI 2.1 video
 - 2x USB 2.0 ports
 - 1x USB-C (power) with USB 2.0 OTG
 - 2x LED's (1x red, 1x white)
 - 3x buttons (power, function, reset)
 - IR receiver
 - 40pin GPIO Header
 - 1x micro SD card slot

The first patch adds the devicetree binding, and the second patch adds
the board device tree.

Nick Xie (2):
  dt-bindings: arm: amlogic: add Khadas VIM1S binding
  arm64: dts: add initial device-tree for Khadas VIM1S

 .../devicetree/bindings/arm/amlogic.yaml      |   6 +
 arch/arm64/boot/dts/amlogic/Makefile          |   1 +
 .../amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 191 ++++++++++++++++++
 3 files changed, 198 insertions(+)
 create mode 100644 arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts

-- 
2.34.1

[PATCH v1 1/2] dt-bindings: arm: amlogic: add Khadas VIM1S binding

[Nick Xie]

Add devicetree binding for Khadas VIM1S board based on
Amlogic S4 S905Y4 SoC.

Signed-off-by: Nick Xie <nick@khadas.com>
---
 Documentation/devicetree/bindings/arm/amlogic.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/amlogic.yaml b/Documentation/devicetree/bindings/arm/amlogic.yaml
index 08d9963fe9259..55663e0f7f915 100644
--- a/Documentation/devicetree/bindings/arm/amlogic.yaml
+++ b/Documentation/devicetree/bindings/arm/amlogic.yaml
@@ -247,6 +247,12 @@ properties:
               - amlogic,aq222
           - const: amlogic,s4
 
+      - description: Boards with the Amlogic Meson S4 S905Y4 SoC
+        items:
+          - enum:
+              - khadas,vim1s
+          - const: amlogic,s4
+
       - description: Boards with the Amlogic S6 S905X5 SoC
         items:
           - enum:
-- 
2.34.1

[PATCH v1 2/2] arm64: dts: add initial device-tree for Khadas VIM1S

[Nick Xie]

The Khadas VIM1S uses the Amlogic S905Y4 SoC, based on the
Amlogic S4 SoC family, on a board with the same form factor as the
VIM/VIM2/VIM3/VIM4 models. Serial debug console, ethernet, SD card
work with this initial device-tree.

It features:
 - 2GB LPDDR4 RAM
 - 16GB eMMC 5.1 storage
 - 32MB SPI flash
 - 100 Base-T Ethernet
 - AP6256 Wireless (802.11 a/b/g/n/ac, BT5.0)
 - HDMI 2.1 video
 - 2x USB 2.0 ports
 - 1x USB-C (power) with USB 2.0 OTG
 - 2x LED's (1x red, 1x white)
 - 3x buttons (power, function, reset)
 - IR receiver
 - 40pin GPIO Header
 - 1x micro SD card slot

Signed-off-by: Nick Xie <nick@khadas.com>
---
 arch/arm64/boot/dts/amlogic/Makefile          |   1 +
 .../amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 191 ++++++++++++++++++
 2 files changed, 192 insertions(+)
 create mode 100644 arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts

diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index 219fb088c704d..15f9c817e5023 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -85,6 +85,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxm-ugoos-am3.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-vega-s96.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-wetek-core2.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-s4-s805x2-aq222.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-s4-s905y4-khadas-vim1s.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-a95xf3-air-gbit.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-a95xf3-air.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-bananapi-m2-pro.dtb
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
new file mode 100644
index 0000000000000..0cd5f9b674830
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
@@ -0,0 +1,191 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2026 Khadas Technology Co., Ltd.
+ */
+
+/dts-v1/;
+
+#include "meson-s4.dtsi"
+
+/ {
+	model = "Khadas VIM1S";
+	compatible = "khadas,vim1s", "amlogic,s4";
+	interrupt-parent = <&gic>;
+	#address-cells = <2>;
+	#size-cells = <2>;
+
+	aliases {
+		mmc0 = &emmc; /* eMMC */
+		mmc1 = &sd; /* SD card */
+		mmc2 = &sdio; /* SDIO */
+		serial0 = &uart_b;
+	};
+
+	memory@0 {
+		device_type = "memory";
+		reg = <0x0 0x0 0x0 0x80000000>;
+	};
+
+	reserved-memory {
+		#address-cells = <2>;
+		#size-cells = <2>;
+		ranges;
+
+		/* 52 MiB reserved for ARM Trusted Firmware */
+		secmon_reserved: secmon@5000000 {
+			reg = <0x0 0x05000000 0x0 0x3400000>;
+			no-map;
+		};
+	};
+
+	sdio_32k: sdio-32k {
+		compatible = "pwm-clock";
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		pwms = <&pwm_ef 0 30518 0>; /* PWM_E at 32.768KHz */
+	};
+
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		reset-gpios = <&gpio GPIOX_6 GPIO_ACTIVE_LOW>;
+		clocks = <&sdio_32k>;
+		clock-names = "ext_clock";
+	};
+
+	main_5v: regulator-main-5v {
+		compatible = "regulator-fixed";
+		regulator-name = "5V";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		regulator-always-on;
+	};
+
+	sdcard_power: regulator-sdcard {
+		compatible = "regulator-fixed";
+		regulator-name = "SDCARD_POWER";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		gpio = <&gpio GPIOD_4 GPIO_ACTIVE_LOW>;
+		enable-active-low;
+		regulator-always-on;
+	};
+
+	vddio_card: gpio-regulator {
+		compatible = "regulator-gpio";
+		regulator-name = "VDDIO_CARD";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <3300000>;
+		gpios = <&gpio GPIOD_9 GPIO_ACTIVE_HIGH>;
+		gpios-states = <1>;
+		states = <1800000 1
+				3300000 0>;
+	};
+
+	/* SY8120B1ABC DC/DC Regulator. */
+	vddcpu: regulator-vddcpu {
+		compatible = "pwm-regulator";
+
+		regulator-name = "VDDCPU";
+		regulator-min-microvolt = <689000>;
+		regulator-max-microvolt = <1049000>;
+
+		vin-supply = <&main_5v>;
+
+		pwms = <&pwm_ij 1 1500 0>;
+		pwm-dutycycle-range = <100 0>;
+
+		regulator-boot-on;
+		regulator-always-on;
+		/* Voltage Duty-Cycle */
+		voltage-table = <1049000 0>,
+				<1039000 3>,
+				<1029000 6>,
+				<1019000 9>,
+				<1009000 12>,
+				<999000 14>,
+				<989000 17>,
+				<979000 20>,
+				<969000 23>,
+				<959000 26>,
+				<949000 29>,
+				<939000 31>,
+				<929000 34>,
+				<919000 37>,
+				<909000 40>,
+				<899000 43>,
+				<889000 45>,
+				<879000 48>,
+				<869000 51>,
+				<859000 54>,
+				<849000 56>,
+				<839000 59>,
+				<829000 62>,
+				<819000 65>,
+				<809000 68>,
+				<799000 70>,
+				<789000 73>,
+				<779000 76>,
+				<769000 79>,
+				<759000 81>,
+				<749000 84>,
+				<739000 87>,
+				<729000 89>,
+				<719000 92>,
+				<709000 95>,
+				<699000 98>,
+				<689000 100>;
+	};
+};
+
+&ethmac {
+	status = "okay";
+	phy-handle = <&internal_ephy>;
+	phy-mode = "rmii";
+};
+
+&ir {
+	status = "okay";
+	pinctrl-0 = <&remote_pins>;
+	pinctrl-names = "default";
+};
+
+&pwm_ef {
+	status = "okay";
+	pinctrl-0 = <&pwm_e_pins1>;
+	pinctrl-names = "default";
+};
+
+&pwm_ij {
+	status = "okay";
+};
+
+&sd {
+	status = "okay";
+	pinctrl-0 = <&sdcard_pins>;
+	pinctrl-1 = <&sdcard_clk_gate_pins>;
+	pinctrl-names = "default", "clk-gate";
+	bus-width = <4>;
+	cap-sd-highspeed;
+	sd-uhs-sdr12;
+	sd-uhs-sdr25;
+	sd-uhs-sdr50;
+	sd-uhs-sdr104;
+	max-frequency = <200000000>;
+	disable-wp;
+
+	cd-gpios = <&gpio GPIOC_6 GPIO_ACTIVE_LOW>;
+
+	vmmc-supply = <&sdcard_power>;
+	vqmmc-supply = <&vddio_card>;
+};
+
+&spicc0 {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&spicc0_pins_x>;
+	cs-gpios = <&gpio GPIOX_10 GPIO_ACTIVE_LOW>;
+};
+
+&uart_b {
+	status = "okay";
+};
-- 
2.34.1

Re: [PATCH v1 0/2] arm64: dts: meson-s4: add support for Khadas VIM1S

[Rob Herring]

On Tue, 13 Jan 2026 17:09:49 +0800, Nick Xie wrote:
> This series adds initial support for the Khadas VIM1S single board computer.
> 
> The Khadas VIM1S is based on the Amlogic S905Y4 (S4 family) SoC.
> It features:
>  - 2GB LPDDR4 RAM
>  - 16GB eMMC 5.1 storage
>  - 32MB SPI flash
>  - 100 Base-T Ethernet
>  - AP6256 Wireless (802.11 a/b/g/n/ac, BT5.0)
>  - HDMI 2.1 video
>  - 2x USB 2.0 ports
>  - 1x USB-C (power) with USB 2.0 OTG
>  - 2x LED's (1x red, 1x white)
>  - 3x buttons (power, function, reset)
>  - IR receiver
>  - 40pin GPIO Header
>  - 1x micro SD card slot
> 
> The first patch adds the devicetree binding, and the second patch adds
> the board device tree.
> 
> Nick Xie (2):
>   dt-bindings: arm: amlogic: add Khadas VIM1S binding
>   arm64: dts: add initial device-tree for Khadas VIM1S
> 
>  .../devicetree/bindings/arm/amlogic.yaml      |   6 +
>  arch/arm64/boot/dts/amlogic/Makefile          |   1 +
>  .../amlogic/meson-s4-s905y4-khadas-vim1s.dts  | 191 ++++++++++++++++++
>  3 files changed, 198 insertions(+)
>  create mode 100644 arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dts
> 
> --
> 2.34.1
> 
> 
> 


My bot found new DTB warnings on the .dts files added or changed in this
series.

Some warnings may be from an existing SoC .dtsi. Or perhaps the warnings
are fixed by another series. Ultimately, it is up to the platform
maintainer whether these warnings are acceptable or not. No need to reply
unless the platform maintainer has comments.

If you already ran DT checks and didn't see these error(s), then
make sure dt-schema is up to date:

  pip3 install dtschema --upgrade


This patch series was applied (using b4) to base:
 Base: attempting to guess base-commit...
 Base: tags/next-20260113 (exact match)
 Base: tags/next-20260113 (use --merge-base to override)

If this is not the correct base, please add 'base-commit' tag
(or use b4 which does this automatically)

New warnings running 'make CHECK_DTBS=y for arch/arm64/boot/dts/amlogic/' for 20260113090951.35928-1-nick@khadas.com:

arch/arm64/boot/dts/amlogic/meson-s4-s905y4-khadas-vim1s.dtb: regulator-sdcard (regulator-fixed): Unevaluated properties are not allowed ('enable-active-low' was unexpected)
	from schema $id: http://devicetree.org/schemas/regulator/fixed-regulator.yaml