[PATCH 2/2] arm64: dts: amlogic: add Xiaomi Mi Box 4 support
Neil Armstrong
neil.armstrong at linaro.org
Thu Sep 3 00:20:05 PDT 2026
Hi,
On 9/3/26 09:09, YuChia-Kan wrote:
> 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 | 340 ++++++++++++++++++++++
> 2 files changed, 341 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..db774efb2898
> --- /dev/null
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxlx-mibox4.dts
> @@ -0,0 +1,340 @@
> +// 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 {
> + label = "mibox4:power";
Drop the label, add the color attribute.
> + 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>;
> + };
> + };
> + };
> +};
> +
> +&apb {
> + mali: gpu at c0000 {
> + interrupts = <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 165 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 166 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 167 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 168 IRQ_TYPE_LEVEL_HIGH>,
> + <GIC_SPI 169 IRQ_TYPE_LEVEL_HIGH>;
> + interrupt-names = "gp", "gpmmu", "pp", "pmu",
> + "pp0", "ppmmu0", "pp1", "ppmmu1",
> + "pp2", "ppmmu2";
> + };
> +};
Drop this, it's already defined in arch/arm64/boot/dts/amlogic/meson-gx-mali450.dtsi
> +
> +&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>;
> + };
> +};
> +
> +/delete-node/ ð_mac;
> +/delete-node/ &sn;
> +/delete-node/ &bid;
Add a comment stating the nvmem layout is custom
> +
> +&efuse {
> + wifi_mac: mac-address at c {
> + reg = <0x0c 0x06>;
> + };
> +};
> +
> +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";
> +};
>
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