arm64: dts: meson: add initial device-tree for ODROID-HC4

ODROID-HC4 is a derivative of the C4 with minor differences:

- 16MB XT25F128B SPI-NOR flash
- 2x SATA ports via ASM1061 PCIe to SATA controller
- 7-pin header with SPI and I2C for 1-inch OLED display and RTC
- 1x USB 2.0 host port

Signed-off-by: Christian Hewitt <christianshewitt@gmail.com>
Reviewed-by: Neil Armstrong <narmstrong@baylibre.com>
Signed-off-by: Kevin Hilman <khilman@baylibre.com>
Link: https://lore.kernel.org/r/20210202021021.11068-6-christianshewitt@gmail.com

arch/arm64/boot/dts/amlogic/Makefile

@@ -47,5 +47,6 @@ dtb-$(CONFIG_ARCH_MESON) += meson-gxm-vega-s96.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-gxm-wetek-core2.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-khadas-vim3l.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-odroid-c4.dtb
+dtb-$(CONFIG_ARCH_MESON) += meson-sm1-odroid-hc4.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-sm1-sei610.dtb
 dtb-$(CONFIG_ARCH_MESON) += meson-a1-ad401.dtb

arch/arm64/boot/dts/amlogic/meson-sm1-odroid-hc4.dts

@@ -0,0 +1,96 @@
+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+/*
+ * Copyright (c) 2020 Dongjin Kim <tobetter@gmail.com>
+ */
+
+/dts-v1/;
+
+#include "meson-sm1-odroid.dtsi"
+
+/ {
+	compatible = "hardkernel,odroid-hc4", "amlogic,sm1";
+	model = "Hardkernel ODROID-HC4";
+
+	aliases {
+		rtc0 = &rtc;
+		rtc1 = &vrtc;
+	};
+
+	fan0: pwm-fan {
+		compatible = "pwm-fan";
+		#cooling-cells = <2>;
+		cooling-min-state = <0>;
+		cooling-max-state = <3>;
+		cooling-levels = <0 120 170 220>;
+		pwms = <&pwm_cd 1 40000 0>;
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-blue {
+			color = <LED_COLOR_ID_BLUE>;
+			function = LED_FUNCTION_STATUS;
+			gpios = <&gpio_ao GPIOAO_11 GPIO_ACTIVE_HIGH>;
+			linux,default-trigger = "heartbeat";
+			panic-indicator;
+		};
+
+		led-red {
+			color = <LED_COLOR_ID_RED>;
+			function = LED_FUNCTION_POWER;
+			gpios = <&gpio_ao GPIOAO_7 GPIO_ACTIVE_HIGH>;
+			default-state = "on";
+		};
+	};
+
+	sound {
+		model = "ODROID-HC4";
+	};
+};
+
+&cpu_thermal {
+	cooling-maps {
+		map {
+			trip = <&cpu_passive>;
+			cooling-device = <&fan0 THERMAL_NO_LIMIT THERMAL_NO_LIMIT>;
+		};
+	};
+};
+
+&ir {
+	linux,rc-map-name = "rc-odroid";
+};
+
+&i2c2 {
+	status = "okay";
+	pinctrl-0 = <&i2c2_sda_x_pins>, <&i2c2_sck_x_pins>;
+	pinctrl-names = "default";
+
+	rtc: rtc@51 {
+		status = "okay";
+		compatible = "nxp,pcf8563";
+		reg = <0x51>;
+		wakeup-source;
+	};
+};
+
+&pcie {
+	status = "okay";
+	reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;
+};
+
+&pwm_cd {
+	status = "okay";
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_d_x6_pins>;
+};
+
+&sd_emmc_c {
+	status = "disabled";
+};
+
+&usb {
+	phys = <&usb2_phy0>, <&usb2_phy1>;
+	phy-names = "usb2-phy0", "usb2-phy1";
+};