[PATCH v2 2/2] arm64: dts: amlogic: add Xiaomi Mi Box 4 support
YuChia-Kan
raspberrykan at stu.hqu.edu.cn
Thu Sep 3 01:50:51 PDT 2026
Add initial device tree support for the Xiaomi Mi Box 4
(MDZ-21-AA), based on the Amlogic S905L SoC.
Enable the main on-board peripherals including eMMC, Wi-Fi,
HDMI, CEC, USB, IR, audio, power LED, GPU and video decoder.
Signed-off-by: YuChia-Kan <raspberrykan at stu.hqu.edu.cn>
---
arch/arm64/boot/dts/amlogic/Makefile | 1 +
arch/arm64/boot/dts/amlogic/meson-gxlx-mibox4.dts | 339 ++++++++++++++++++++++
2 files changed, 340 insertions(+)
diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index 57bc440fa55c..9f357df5fc54 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -72,6 +72,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-nexbox-a95x.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-p212.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-vero4k.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxlx-s905l-p271.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-gxlx-mibox4.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-gt1-ultimate.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-khadas-vim2.dtb
dtb-$(CONFIG_ARCH_MESON) += meson-gxm-mecool-kiii-pro.dtb
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxlx-mibox4.dts b/arch/arm64/boot/dts/amlogic/meson-gxlx-mibox4.dts
new file mode 100644
index 000000000000..e715eae823fe
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-gxlx-mibox4.dts
@@ -0,0 +1,339 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+// Copyright (c) 2026 YuChia-Kan <mail at raspberrykan.dev>
+
+/dts-v1/;
+
+#include "meson-gxl-s905x.dtsi"
+
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/sound/meson-aiu.h>
+
+/ {
+ compatible = "xiaomi,mibox4", "amlogic,s905l", "amlogic,meson-gxlx";
+ model = "Xiaomi Mi Box 4 (MDZ-21-AA)";
+
+ aliases {
+ serial0 = &uart_AO;
+ mmc0 = &sd_emmc_c;
+ mmc1 = &sd_emmc_a;
+ /delete-property/ mmc2;
+ };
+
+ chosen {
+ stdout-path = "serial0:115200n8";
+ };
+
+ av_mute: analog-audio-mute {
+ compatible = "simple-audio-amplifier";
+ sound-name-prefix = "AV";
+ enable-gpios = <&gpio GPIOH_5 GPIO_ACTIVE_HIGH>;
+ };
+
+ memory at 0 {
+ device_type = "memory";
+ reg = <0x0 0x0 0x0 0x80000000>;
+ };
+
+ hdmi_connector: hdmi-connector {
+ compatible = "hdmi-connector";
+ type = "a";
+
+ port {
+ hdmi_connector_in: endpoint {
+ remote-endpoint = <&hdmi_tx_tmds_out>;
+ };
+ };
+ };
+
+ cvbs_connector: cvbs-connector {
+ compatible = "composite-video-connector";
+
+ port {
+ cvbs_connector_in: endpoint {
+ remote-endpoint = <&cvbs_vdac_out>;
+ };
+ };
+ };
+
+ hdmi_usb_5v: regulator-hdmi-usb-5v {
+ compatible = "regulator-fixed";
+ regulator-name = "HDMI_USB_5V";
+ regulator-min-microvolt = <5000000>;
+ regulator-max-microvolt = <5000000>;
+ gpio = <&gpio_ao GPIOAO_4 GPIO_ACTIVE_HIGH>;
+ enable-active-high;
+ regulator-boot-on;
+ regulator-always-on;
+ };
+
+ vddio_boot: regulator-vddio-boot {
+ compatible = "regulator-fixed";
+ regulator-name = "VDDIO_BOOT";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ vddao_3v3: regulator-vddao-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "VDDAO_3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ vddio_ao18: regulator-vddio-ao18 {
+ compatible = "regulator-fixed";
+ regulator-name = "VDDIO_AO18";
+ regulator-min-microvolt = <1800000>;
+ regulator-max-microvolt = <1800000>;
+ };
+
+ vcc_3v3: regulator-vcc-3v3 {
+ compatible = "regulator-fixed";
+ regulator-name = "VCC_3V3";
+ regulator-min-microvolt = <3300000>;
+ regulator-max-microvolt = <3300000>;
+ };
+
+ emmc_pwrseq: emmc-pwrseq {
+ compatible = "mmc-pwrseq-emmc";
+ reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
+ };
+
+ wifi32k: wifi32k {
+ compatible = "pwm-clock";
+ #clock-cells = <0>;
+ clock-frequency = <32768>;
+ pwms = <&pwm_ef 0 30518 0>;
+ };
+
+ wifi_pwrseq: wifi-pwrseq {
+ compatible = "mmc-pwrseq-simple";
+ reset-gpios = <&gpio GPIOX_9 GPIO_ACTIVE_LOW>;
+ clocks = <&wifi32k>;
+ clock-names = "ext_clock";
+ post-power-on-delay-ms = <200>;
+ };
+
+ leds: leds {
+ compatible = "gpio-leds";
+
+ power_led: power-led {
+ color = <LED_COLOR_ID_WHITE>;
+ function = LED_FUNCTION_POWER;
+ gpios = <&gpio GPIOX_6 GPIO_ACTIVE_HIGH>;
+ default-state = "on";
+ };
+ };
+
+ sound {
+ compatible = "amlogic,gx-sound-card";
+ model = "Xiaomi-Mi-Box-4";
+ audio-aux-devs = <&av_mute>;
+ audio-widgets = "Line", "Lineout";
+ audio-routing = "AV INL", "ACODEC LOLN",
+ "AV INR", "ACODEC LORN",
+ "Lineout", "AV OUTL",
+ "Lineout", "AV OUTR";
+
+ clocks = <&clkc CLKID_MPLL0>,
+ <&clkc CLKID_MPLL1>,
+ <&clkc CLKID_MPLL2>;
+ assigned-clocks = <&clkc CLKID_MPLL0>,
+ <&clkc CLKID_MPLL1>,
+ <&clkc CLKID_MPLL2>;
+ assigned-clock-rates = <294912000>, <270950400>, <393216000>;
+
+ dai-link-0 {
+ sound-dai = <&aiu AIU_CPU CPU_I2S_FIFO>;
+ };
+
+ dai-link-1 {
+ sound-dai = <&aiu AIU_CPU CPU_I2S_ENCODER>;
+ dai-format = "i2s";
+ mclk-fs = <256>;
+
+ codec-0 {
+ sound-dai = <&aiu AIU_HDMI CTRL_I2S>;
+ };
+
+ codec-1 {
+ sound-dai = <&aiu AIU_ACODEC CTRL_I2S>;
+ };
+ };
+
+ dai-link-2 {
+ sound-dai = <&aiu AIU_HDMI CTRL_OUT>;
+
+ codec-0 {
+ sound-dai = <&hdmi_tx>;
+ };
+ };
+
+ dai-link-3 {
+ sound-dai = <&aiu AIU_ACODEC CTRL_OUT>;
+
+ codec-0 {
+ sound-dai = <&acodec>;
+ };
+ };
+ };
+};
+
+&acodec {
+ AVDD-supply = <&vddio_ao18>;
+ status = "okay";
+};
+
+&aiu {
+ status = "okay";
+};
+
+&cec_AO {
+ status = "okay";
+ pinctrl-0 = <&ao_cec_pins>;
+ pinctrl-names = "default";
+ hdmi-phandle = <&hdmi_tx>;
+};
+
+&cvbs_vdac_port {
+ cvbs_vdac_out: endpoint {
+ remote-endpoint = <&cvbs_connector_in>;
+ };
+};
+
+/*
+ * The Mi Box 4 uses a custom efuse layout extracted from the
+ * original firmware.
+ */
+
+/delete-node/ ð_mac;
+/delete-node/ &sn;
+/delete-node/ &bid;
+
+&efuse {
+ eth_mac: mac-address at 0 {
+ reg = <0x00 0x06>;
+ };
+
+ bt_mac: mac-address at 6 {
+ reg = <0x06 0x06>;
+ };
+
+ wifi_mac: mac-address at c {
+ reg = <0x0c 0x06>;
+ };
+
+ usid: serial-number at 12 {
+ reg = <0x12 0x10>;
+ };
+};
+
+ðmac {
+ status = "disabled";
+};
+
+&hdmi_tx {
+ status = "okay";
+ pinctrl-0 = <&hdmi_hpd_pins>, <&hdmi_i2c_pins>;
+ pinctrl-names = "default";
+ hdmi-supply = <&hdmi_usb_5v>;
+};
+
+&hdmi_tx_tmds_port {
+ hdmi_tx_tmds_out: endpoint {
+ remote-endpoint = <&hdmi_connector_in>;
+ };
+};
+
+&ir {
+ status = "okay";
+ pinctrl-0 = <&remote_input_ao_pins>;
+ pinctrl-names = "default";
+};
+
+&pwm_ef {
+ status = "okay";
+ pinctrl-0 = <&pwm_e_pins>;
+ pinctrl-names = "default";
+};
+
+&saradc {
+ compatible = "amlogic,meson-gxlx-saradc", "amlogic,meson-saradc";
+ status = "okay";
+ vref-supply = <&vddio_ao18>;
+};
+
+&sd_emmc_a {
+ status = "okay";
+ pinctrl-0 = <&sdio_pins>;
+ pinctrl-1 = <&sdio_clk_gate_pins>;
+ pinctrl-names = "default", "clk-gate";
+ #address-cells = <1>;
+ #size-cells = <0>;
+ bus-width = <4>;
+ cap-sd-highspeed;
+ cap-sdio-irq;
+ max-frequency = <50000000>;
+ non-removable;
+ no-mmc;
+ no-sd;
+ disable-wp;
+ keep-power-in-suspend;
+ sd-uhs-sdr12;
+ sd-uhs-sdr25;
+ sd-uhs-sdr50;
+ sd-uhs-sdr104;
+ mmc-pwrseq = <&wifi_pwrseq>;
+ vmmc-supply = <&vddao_3v3>;
+ vqmmc-supply = <&vddio_boot>;
+
+ rtl8723ds: wifi at 1 {
+ reg = <1>;
+ nvmem-cells = <&wifi_mac>;
+ nvmem-cell-names = "mac-address";
+ interrupt-parent = <&gpio_intc>;
+ interrupts = <GPIOX_7 IRQ_TYPE_LEVEL_HIGH>;
+ interrupt-names = "host-wake";
+ };
+};
+
+&sd_emmc_b {
+ status = "disabled";
+};
+
+&sd_emmc_c {
+ 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;
+ max-frequency = <100000000>;
+ non-removable;
+ disable-wp;
+ mmc-ddr-1_8v;
+ mmc-hs200-1_8v;
+ mmc-hs400-1_8v;
+ mmc-pwrseq = <&emmc_pwrseq>;
+ vmmc-supply = <&vcc_3v3>;
+ vqmmc-supply = <&vddio_boot>;
+};
+
+&uart_AO {
+ status = "okay";
+ pinctrl-0 = <&uart_ao_a_pins>;
+ pinctrl-names = "default";
+};
+
+&usb {
+ status = "okay";
+ dr_mode = "host";
+};
+
+&usb2_phy0 {
+ phy-supply = <&hdmi_usb_5v>;
+};
+
+&vdec {
+ compatible = "amlogic,gxlx-vdec", "amlogic,gx-vdec";
+};
--
2.53.0
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