[PATCH 2/2] arm64: dts: rockchip: Add DFRobot UNIHIKER M10 V1.2

[Mizuno Miotsuki]

Add a minimal device tree for revision 1.2 of the DFRobot UNIHIKER
M10. Enable the CPU regulator, eMMC, SD, SDIO Wi-Fi, serial console,
USB host and peripheral ports, GPIO keys, and watchdog.

Audio, display, touchscreen, Bluetooth, IMU, and companion MCU support
remain disabled until their dependencies and board wiring are ready for
upstream.

Signed-off-by: Mizuno Miotsuki <founder@xxxxxxxxxxx>
---
 arch/arm64/boot/dts/rockchip/Makefile         |   1 +
 .../dts/rockchip/rk3308-unihiker-m10-v1.2.dts | 248 ++++++++++++++++++
 2 files changed, 249 insertions(+)
 create mode 100644 arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts

diff --git a/arch/arm64/boot/dts/rockchip/Makefile b/arch/arm64/boot/dts/rockchip/Makefile
index e7936a21c118..6e520a5e3c61 100644
--- a/arch/arm64/boot/dts/rockchip/Makefile
+++ b/arch/arm64/boot/dts/rockchip/Makefile
@@ -19,6 +19,7 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-roc-cc.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-rock-pi-s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-rock-s0.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-sakurapi-rk3308b.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3308-unihiker-m10-v1.2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3318-a95x-z2.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-anbernic-rg351m.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3326-anbernic-rg351v.dtb
diff --git a/arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts b/arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts
new file mode 100644
index 000000000000..270ea970c95a
--- /dev/null
+++ b/arch/arm64/boot/dts/rockchip/rk3308-unihiker-m10-v1.2.dts
@@ -0,0 +1,248 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2026 Mizuno Miotsuki <founder@xxxxxxxxxxx>
+ */
+
+/dts-v1/;
+
+#include <dt-bindings/input/input.h>
+#include "rk3308.dtsi"
+
+/ {
+	model = "DFRobot UNIHIKER M10 V1.2";
+	compatible = "dfrobot,unihiker-m10-v1.2", "rockchip,rk3308";
+
+	aliases {
+		mmc0 = &emmc;
+		mmc1 = &sdmmc;
+		mmc2 = &sdio;
+	};
+
+	chosen {
+		stdout-path = "serial0:1500000n8";
+	};
+
+	keys {
+		compatible = "gpio-keys";
+
+		key-a {
+			debounce-interval = <20>;
+			gpios = <&gpio0 RK_PC1 GPIO_ACTIVE_LOW>;
+			label = "A";
+			linux,code = <KEY_A>;
+		};
+
+		key-b {
+			debounce-interval = <20>;
+			gpios = <&gpio0 RK_PC2 GPIO_ACTIVE_LOW>;
+			label = "B";
+			linux,code = <KEY_B>;
+		};
+
+		key-home {
+			debounce-interval = <20>;
+			gpios = <&gpio1 RK_PA0 GPIO_ACTIVE_LOW>;
+			label = "Home";
+			linux,code = <KEY_HOME>;
+		};
+	};
+
+	sdio_pwrseq: sdio-pwrseq {
+		compatible = "mmc-pwrseq-simple";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_enable_h>;
+		reset-gpios = <&gpio0 RK_PA2 GPIO_ACTIVE_LOW>;
+	};
+
+	vcc_1v8: regulator-vcc-1v8 {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_1v8";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+		vin-supply = <&vcc_io>;
+	};
+
+	vcc_io: regulator-vcc-io {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc_io";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vcc_sd: regulator-vcc-sd {
+		compatible = "regulator-fixed";
+		gpios = <&gpio4 RK_PD6 GPIO_ACTIVE_LOW>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&sd_vcc_en>;
+		regulator-name = "vcc_sd";
+		regulator-min-microvolt = <3300000>;
+		regulator-max-microvolt = <3300000>;
+	};
+
+	vcc5v0_sys: regulator-vcc5v0-sys {
+		compatible = "regulator-fixed";
+		regulator-name = "vcc5v0_sys";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+
+	vcc5v0_usb_host: regulator-vcc5v0-usb-host {
+		compatible = "regulator-fixed";
+		enable-active-high;
+		gpios = <&gpio0 RK_PC5 GPIO_ACTIVE_HIGH>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&usb_host_vbus_en>;
+		regulator-name = "vcc5v0_usb_host";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+		vin-supply = <&vcc5v0_sys>;
+	};
+
+	vdd_core: regulator-vdd-core {
+		compatible = "pwm-regulator";
+		pwms = <&pwm0 0 5000 1>;
+		regulator-name = "vdd_core";
+		regulator-always-on;
+		regulator-boot-on;
+		regulator-min-microvolt = <827000>;
+		regulator-max-microvolt = <1340000>;
+		regulator-settling-time-up-us = <250>;
+	};
+};
+
+&cpu0 {
+	cpu-supply = <&vdd_core>;
+};
+
+&emmc {
+	cap-mmc-highspeed;
+	no-1-8-v;
+	non-removable;
+	pinctrl-names = "default";
+	pinctrl-0 = <&emmc_bus8 &emmc_clk &emmc_cmd>;
+	vmmc-supply = <&vcc_io>;
+	status = "okay";
+};
+
+&io_domains {
+	vccio0-supply = <&vcc_io>;
+	vccio1-supply = <&vcc_io>;
+	vccio2-supply = <&vcc_io>;
+	vccio3-supply = <&vcc_io>;
+	vccio4-supply = <&vcc_1v8>;
+	vccio5-supply = <&vcc_io>;
+	status = "okay";
+};
+
+&otp {
+	status = "disabled";
+};
+
+&pinctrl {
+	pinctrl-names = "default";
+	pinctrl-0 = <&rtc_32k>;
+
+	sdmmc {
+		sd_vcc_en: sd-vcc-en {
+			rockchip,pins = <4 RK_PD6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	usb {
+		usb_host_vbus_en: usb-host-vbus-en {
+			rockchip,pins = <0 RK_PC5 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	wifi {
+		wifi_enable_h: wifi-enable-h {
+			rockchip,pins = <0 RK_PA2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+
+		wifi_host_wake: wifi-host-wake {
+			rockchip,pins = <0 RK_PA0 RK_FUNC_GPIO &pcfg_pull_down>;
+		};
+	};
+};
+
+&pwm0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm0_pin_pull_down>;
+	status = "okay";
+};
+
+&sdio {
+	#address-cells = <1>;
+	#size-cells = <0>;
+	cap-sd-highspeed;
+	cap-sdio-irq;
+	keep-power-in-suspend;
+	mmc-pwrseq = <&sdio_pwrseq>;
+	no-mmc;
+	no-sd;
+	non-removable;
+	vmmc-supply = <&vcc_io>;
+	vqmmc-supply = <&vcc_1v8>;
+	status = "okay";
+
+	wifi@1 {
+		reg = <1>;
+		interrupt-parent = <&gpio0>;
+		interrupts = <RK_PA0 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-names = "host-wake";
+		pinctrl-names = "default";
+		pinctrl-0 = <&wifi_host_wake>;
+	};
+};
+
+&sdmmc {
+	cap-sd-highspeed;
+	disable-wp;
+	no-1-8-v;
+	vmmc-supply = <&vcc_sd>;
+	vqmmc-supply = <&vcc_io>;
+	status = "okay";
+};
+
+&u2phy {
+	status = "okay";
+};
+
+&u2phy_host {
+	phy-supply = <&vcc5v0_usb_host>;
+	status = "okay";
+};
+
+&u2phy_otg {
+	status = "okay";
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_xfer>;
+	status = "okay";
+};
+
+&usb20_otg {
+	dr_mode = "peripheral";
+	status = "okay";
+};
+
+&usb_host_ehci {
+	status = "okay";
+};
+
+&usb_host_ohci {
+	status = "okay";
+};
+
+&wdt {
+	status = "okay";
+};
-- 
2.55.0