From efd1039ff812f1d6bb58d57ea84802a428b58ccd Mon Sep 17 00:00:00 2001
From: "@exkc" <exkc@exkc.moe>
Date: Tue, 14 Mar 2023 23:08:03 +0800
Subject: [PATCH]  ARM64: dts: meson-gxl: add support for the Xiaomi Mi Box 3

The Xiaomi Mi Box 3 is a TV box based on the Amlogic S905X chipset.
There are two variants:
- 2 GiB of DDR3 memory
- 8 GB eMMC flash

Both variants come with:
- 802.11a/b/g/n/ac wifi (BCM4345)
- HDMI and AV (CVBS) 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:
---
 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@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