[PATCH] ARM64: dts: meson-gxl: add support for the Xiaomi Mi Box 3

[Karl Chan]

The Xiaomi Mi Box 3 is a TV box based on the Amlogic S905X chipset.
There are two variants:
- 2 GiB/16GIB
- 1 GiB/8GIB

Both variants come with:
- 802.11a/b/g/n/ac wifi (BCM4345)
- HDMI , AV (CVBS) and spdif optical output
- 1x USB (utilizing both USB ports provided by the SoC)

The board seems to be very similar to the P212 reference
boards, which is why it includes meson-gxl-s905x-p212.dtsi:
Signed-off-by: Karl Chan <exxxxkc at getgoogleoff.me>
Tested-by: Karl Chan <exxxxkc at getgoogleoff.me>
---
  arch/arm64/boot/dts/amlogic/Makefile          |   1 +
  .../amlogic/meson-gxl-s905x-xiaomi-once.dts   | 142 ++++++++++++++++++
  2 files changed, 143 insertions(+)
  create mode 100644 
arch/arm64/boot/dts/amlogic/meson-gxl-s905x-xiaomi-once.dts

diff --git a/arch/arm64/boot/dts/amlogic/Makefile 
b/arch/arm64/boot/dts/amlogic/Makefile
index e213aeebb..904bb1e19 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -45,6 +45,7 @@ dtb-$(CONFIG_ARCH_MESON) += 
meson-gxl-s905x-libretech-cc-v2.dtb
  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-libretech-cc.dtb
  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-nexbox-a95x.dtb
  dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-p212.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-gxl-s905x-xiaomi-once.dtb
  dtb-$(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-gxl-s905x-xiaomi-once.dts 
b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-xiaomi-once.dts
new file mode 100644
index 000000000..6169c0dc0
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-gxl-s905x-xiaomi-once.dts
@@ -0,0 +1,142 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2023 exkc <exxxxkc at getgoogleoff.me>
+ * Based on meson-gxl-s905x-p212.dts
+ *
+ */
+
+/dts-v1/;
+
+#include "meson-gxl-s905x-p212.dtsi"
+#include <dt-bindings/sound/meson-aiu.h>
+
+/ {
+    compatible = "xiaomi,once", "amlogic,s905x", "amlogic,meson-gxl";
+    model = "Xiaomi Mi Box 3";
+
+    dio2133: analog-amplifier {
+        compatible = "simple-audio-amplifier";
+        sound-name-prefix = "AU2";
+        VCC-supply = <&hdmi_5v>;
+        enable-gpios = <&gpio GPIOH_5 GPIO_ACTIVE_HIGH>;
+    };
+
+    cvbs-connector {
+        compatible = "composite-video-connector";
+
+        port {
+            cvbs_connector_in: endpoint {
+                remote-endpoint = <&cvbs_vdac_out>;
+            };
+        };
+    };
+
+    hdmi-connector {
+        compatible = "hdmi-connector";
+        type = "a";
+
+        port {
+            hdmi_connector_in: endpoint {
+                remote-endpoint = <&hdmi_tx_tmds_out>;
+            };
+        };
+    };
+
+    sound {
+        compatible = "amlogic,gx-sound-card";
+        model = "XIAOMI-ONCE";
+        audio-aux-devs = <&dio2133>;
+        audio-widgets = "Line", "Lineout";
+        audio-routing = "Lineout", "AU2 OUTL",
+                "Lineout", "AU2 OUTR";
+        assigned-clocks = <&clkc CLKID_MPLL0>,
+                  <&clkc CLKID_MPLL1>,
+                  <&clkc CLKID_MPLL2>;
+        assigned-clock-parents = <0>, <0>, <0>;
+        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>;
+    };
+};
+
+&hdmi_tx {
+    status = "okay";
+    pinctrl-0 = <&hdmi_hpd_pins>, <&hdmi_i2c_pins>;
+    pinctrl-names = "default";
+    hdmi-supply = <&hdmi_5v>;
+};
+
+&hdmi_tx_tmds_port {
+    hdmi_tx_tmds_out: endpoint {
+        remote-endpoint = <&hdmi_connector_in>;
+    };
+};
+
+&ethmac {
+    status = "disabled";
+};
+
+&usb {
+    status = "okay";
+    dr_mode = "host";
+};
+
+/* This UART is brought out to the uarl pad on the pcb*/
+&uart_AO {
+    status = "okay";
+};
-- 
2.39.2