From b2e02da33d49e72e3b3f126f6df87608be02443c Mon Sep 17 00:00:00 2001
From: Christian Hewitt <christianshewitt@gmail.com>
Date: Sun, 11 Apr 2021 05:52:14 +0000
Subject: [PATCH 50/73] WIP: arm64: dts: meson: add initial device-tree for
 Minix NEO-U1

The Minix NEO-U1 is an Android STB based on the Amlogic P200 (GXBB)
reference design with an S905-H chip and the following specs:

- 2GB DDR3 RAM
- 16GB eMMC
- 10/100/1000 Base-T Ethernet
- AP6356 Wireless (802.11 b/g/n/ac, BT 5.0)
- HDMI 2.1 video
- S/PDIF optical output
- ES8323 DAC
- 3x USB 2.0 port
- 1x USB micro OTG port
- RTC chip (hym8563)
- IR receiver
- 1x Power LED (white)
- 1x Update/Reset button (underside)
- 1x micro SD card slot

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
---
 arch/arm64/boot/dts/amlogic/Makefile          |   1 +
 .../dts/amlogic/meson-gxbb-minix-neo-u1.dts   | 189 ++++++++++++++++++
 2 files changed, 190 insertions(+)
 create mode 100644 arch/arm64/boot/dts/amlogic/meson-gxbb-minix-neo-u1.dts

diff --git a/arch/arm64/boot/dts/amlogic/Makefile b/arch/arm64/boot/dts/amlogic/Makefile
index 1caed487c074..fd0d7d68f8e6 100644
--- a/arch/arm64/boot/dts/amlogic/Makefile
+++ b/arch/arm64/boot/dts/amlogic/Makefile
@@ -19,6 +19,7 @@ dtb-$(CONFIG_ARCH_MESON) += meson-g12b-ugoos-am6.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-kii-pro.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-mecool-ki-plus.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-mecool-kii-pro.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-minix-neo-u1.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nanopi-k2.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-nexbox-a95x.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxbb-odroidc2.dtb
diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb-minix-neo-u1.dts b/arch/arm64/boot/dts/amlogic/meson-gxbb-minix-neo-u1.dts
new file mode 100644
index 000000000000..5343e90f9f34
--- /dev/null
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb-minix-neo-u1.dts
@@ -0,0 +1,189 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2021 Christian Hewitt <christianshewitt@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "meson-gxbb-p20x.dtsi"
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/input.h>
+#include <dt-bindings/leds/common.h>
+#include <dt-bindings/sound/meson-aiu.h>
+
+/ {
+	compatible = "minix,neo-u1", "amlogic,meson-gxbb";
+	model = "Minix NEO U1";
+
+	aliases {
+		rtc0 = &rtc;
+	};
+
+	spdif_dit: audio-codec-0 {
+		#sound-dai-cells = <0>;
+		compatible = "linux,spdif-dit";
+		status = "okay";
+		sound-name-prefix = "DIT";
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-status {
+			color = <LED_COLOR_ID_WHITE>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&gpio_ao GPIOAO_13 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+		};
+	};
+
+	gpio-keys-polled {
+		compatible = "gpio-keys-polled";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		poll-interval = <20>;
+
+		button-reset {
+			label = "reset";
+			linux,code = <KEY_POWER>;
+			gpios = <&gpio_ao GPIOAO_3 GPIO_ACTIVE_HIGH>;
+		};
+	};
+
+	avdd18_usb_adc: regulator-avdd18_usb_adc {
+		compatible = "regulator-fixed";
+		regulator-name = "AVDD18_USB_ADC";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
+	sound {
+		compatible = "amlogic,gx-sound-card";
+		model = "MINIX-NEO";
+		assigned-clocks = <&clkc CLKID_MPLL0>,
+				  <&clkc CLKID_MPLL1>,
+				  <&clkc CLKID_MPLL2>;
+		assigned-clock-parents = <0>, <0>, <0>;
+		assigned-clock-rates = <294912000>,
+				       <270950400>,
+				       <393216000>;
+		status = "okay";
+
+		dai-link-0 {
+			sound-dai = <&aiu AIU_CPU CPU_I2S_FIFO>;
+		};
+
+		dai-link-1 {
+			sound-dai = <&aiu AIU_CPU CPU_SPDIF_FIFO>;
+		};
+
+		dai-link-2 {
+			sound-dai = <&aiu AIU_CPU CPU_I2S_ENCODER>;
+			dai-format = "i2s";
+			mclk-fs = <256>;
+
+			codec-0 {
+				sound-dai = <&aiu AIU_HDMI CTRL_I2S>;
+			};
+		};
+
+		dai-link-3 {
+			sound-dai = <&aiu AIU_CPU CPU_SPDIF_ENCODER>;
+
+			codec-0 {
+				sound-dai = <&spdif_dit>;
+			};
+		};
+
+		dai-link-4 {
+			sound-dai = <&aiu AIU_HDMI CTRL_OUT>;
+
+			codec-0 {
+				sound-dai = <&hdmi_tx>;
+			};
+		};
+	};
+};
+
+&aiu {
+	status = "okay";
+	pinctrl-0 = <&spdif_out_y_pins>;
+	pinctrl-names = "default";
+};
+
+&ethmac {
+	status = "okay";
+	pinctrl-0 = <&eth_rgmii_pins>;
+	pinctrl-names = "default";
+
+	phy-handle = <&eth_phy0>;
+	phy-mode = "rgmii";
+
+	amlogic,tx-delay-ns = <2>;
+
+	mdio {
+		compatible = "snps,dwmac-mdio";
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		eth_phy0: ethernet-phy@0 {
+			/* Realtek RTL8211F (0x001cc916) */
+			reg = <0>;
+
+			reset-assert-us = <10000>;
+			reset-deassert-us = <80000>;
+			reset-gpios = <&gpio GPIOZ_14 GPIO_ACTIVE_LOW>;
+
+			interrupt-parent = <&gpio_intc>;
+			/* MAC_INTR on GPIOZ_15 */
+			interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+		};
+	};
+};
+
+&ir {
+	linux,rc-map-name = "rc-minix-neo";
+};
+
+&i2c_A {
+	status = "okay";
+	pinctrl-0 = <&i2c_a_pins>;
+	pinctrl-names = "default";
+};
+
+&i2c_B {
+	status = "okay";
+	pinctrl-0 = <&i2c_b_pins>;
+	pinctrl-names = "default";
+
+	rtc: rtc@51 {
+		status = "okay";
+		compatible = "haoyu,hym8563";
+		reg = <0x51>;
+		#clock-cells = <0>;
+		clock-frequency = <32768>;
+		clock-output-names = "xin32k";
+		wakeup-source;
+	};
+};
+
+&saradc {
+	status = "okay";
+	vref-supply = <&avdd18_usb_adc>;
+};
+
+/* This is connected to the Bluetooth module: */
+&uart_A {
+	status = "okay";
+	pinctrl-0 = <&uart_a_pins>, <&uart_a_cts_rts_pins>;
+	pinctrl-names = "default";
+	uart-has-rtscts;
+
+	bluetooth {
+		compatible = "bcm43438-bt";
+		shutdown-gpios = <&gpio GPIOX_17 GPIO_ACTIVE_HIGH>;
+		max-speed = <2000000>;
+		clocks = <&wifi32k>;
+		clock-names = "lpo";
+	};
+};
-- 
2.17.1