arm64: dts: rockchip: add Anbernic RG-ARC S and RG-ARC D

Add support for the Anbernic RG-ARC S and RG-ARC D devices. These
devices feature the following:
 - Rockchip RK3566 SoC
 - 4 inch 480x640 display (rotated)
 - Goodix multi-touch (ARC D only, untested as I lack the device)
 - 1GB (ARC S) or 2GB (ARC D) of RAM
 - 2 SDMMC slots
 - eMMC (ARC D only)
 - Realtek 8821CS WiFi/Bluetooth
 - External stereo speakers
 - 6 face buttons (A, B, C, X, Y, Z) along with a D-Pad and start and
   select buttons.
 - A PWM vibrator.

Note that the Goodix touchscreen on I2C2 is not defined, as I lack
the necessary hardware to confirm it works correctly with the mainline
driver.
Signed-off-by: Chris Morgan <macromorgan@hotmail.com>
Link: https://lore.kernel.org/r/20240123212111.202146-5-macroalpha82@gmail.comSigned-off-by: Heiko Stuebner <heiko@sntech.de>

arch/arm64/boot/dts/rockchip/Makefile

@@ -71,6 +71,8 @@ dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-rockpro64.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399-sapphire-excavator.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3399pro-rock-pi-n10.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg-arc-d.dtb
+dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg-arc-s.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg353p.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg353ps.dtb
 dtb-$(CONFIG_ARCH_ROCKCHIP) += rk3566-anbernic-rg353v.dtb

arch/arm64/boot/dts/rockchip/rk3566-anbernic-rg-arc-d.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include "rk3566-anbernic-rg-arc.dtsi"
+
+/ {
+	model = "Anbernic RG ARC-D";
+	compatible = "anbernic,rg-arc-d", "rockchip,rk3566";
+
+	aliases {
+		mmc0 = &sdhci;
+		mmc1 = &sdmmc0;
+		mmc2 = &sdmmc1;
+		mmc3 = &sdmmc2;
+	};
+};
+
+/*
+ * Unknown Goodix touchscreen at i2c2 0x14. Needs testing before it's
+ * enabled.
+ */
+&i2c2 {
+	pinctrl-0 = <&i2c2m1_xfer>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
+&sdhci {
+	bus-width = <8>;
+	mmc-hs200-1_8v;
+	non-removable;
+	pinctrl-0 = <&emmc_bus8>, <&emmc_clk>, <&emmc_cmd>,
+		    <&emmc_datastrobe>, <&emmc_rstnout>;
+	pinctrl-names = "default";
+	vmmc-supply = <&vcc_3v3>;
+	vqmmc-supply = <&vcc_1v8>;
+	status = "okay";
+};

arch/arm64/boot/dts/rockchip/rk3566-anbernic-rg-arc-s.dts

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include "rk3566-anbernic-rg-arc.dtsi"
+
+/ {
+	model = "Anbernic RG ARC-S";
+	compatible = "anbernic,rg-arc-s", "rockchip,rk3566";
+
+	aliases {
+		mmc1 = &sdmmc0;
+		mmc2 = &sdmmc1;
+		mmc3 = &sdmmc2;
+	};
+};

arch/arm64/boot/dts/rockchip/rk3566-anbernic-rg-arc.dtsi

+// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
+
+/dts-v1/;
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/pinctrl/rockchip.h>
+#include "rk3566-anbernic-rgxx3.dtsi"
+
+/ {
+	backlight: backlight {
+		compatible = "pwm-backlight";
+		power-supply = <&vcc_sys>;
+		pwms = <&pwm4 0 25000 0>;
+	};
+
+	battery: battery {
+		compatible = "simple-battery";
+		charge-full-design-microamp-hours = <3472000>;
+		charge-term-current-microamp = <300000>;
+		constant-charge-current-max-microamp = <2000000>;
+		constant-charge-voltage-max-microvolt = <4200000>;
+		factory-internal-resistance-micro-ohms = <117000>;
+		voltage-max-design-microvolt = <4172000>;
+		voltage-min-design-microvolt = <3400000>;
+
+		ocv-capacity-celsius = <20>;
+		ocv-capacity-table-0 =	<4172000 100>, <4054000 95>, <3984000 90>, <3926000 85>,
+					<3874000 80>, <3826000 75>, <3783000 70>, <3746000 65>,
+					<3714000 60>, <3683000 55>, <3650000 50>, <3628000 45>,
+					<3612000 40>, <3600000 35>, <3587000 30>, <3571000 25>,
+					<3552000 20>, <3525000 15>, <3492000 10>, <3446000 5>,
+					<3400000 0>;
+	};
+
+	/* Channels reversed for both headphones and speakers. */
+	sound {
+		compatible = "simple-audio-card";
+		pinctrl-0 = <&hp_det>;
+		pinctrl-names = "default";
+		simple-audio-card,name = "rk817_ext";
+		simple-audio-card,aux-devs = <&spk_amp>;
+		simple-audio-card,format = "i2s";
+		simple-audio-card,hp-det-gpio = <&gpio4 RK_PC6 GPIO_ACTIVE_HIGH>;
+		simple-audio-card,mclk-fs = <256>;
+		simple-audio-card,widgets =
+			"Microphone", "Mic Jack",
+			"Headphone", "Headphones",
+			"Speaker", "Internal Speakers";
+		simple-audio-card,routing =
+			"MICL", "Mic Jack",
+			"Headphones", "HPOL",
+			"Headphones", "HPOR",
+			"Internal Speakers", "Speaker Amp OUTL",
+			"Internal Speakers", "Speaker Amp OUTR",
+			"Speaker Amp INL", "HPOL",
+			"Speaker Amp INR", "HPOR";
+		simple-audio-card,pin-switches = "Internal Speakers";
+
+		simple-audio-card,codec {
+			sound-dai = <&rk817>;
+		};
+
+		simple-audio-card,cpu {
+			sound-dai = <&i2s1_8ch>;
+		};
+	};
+
+	spk_amp: audio-amplifier {
+		compatible = "simple-audio-amplifier";
+		enable-gpios = <&gpio4 RK_PC2 GPIO_ACTIVE_HIGH>;
+		pinctrl-0 = <&spk_amp_enable_h>;
+		pinctrl-names = "default";
+		sound-name-prefix = "Speaker Amp";
+	};
+};
+
+&cru {
+	assigned-clocks = <&pmucru CLK_RTC_32K>, <&cru PLL_GPLL>,
+			  <&pmucru PLL_PPLL>, <&cru PLL_VPLL>;
+	assigned-clock-rates = <32768>, <1200000000>,
+			       <200000000>, <128000000>;
+};
+
+&dsi_dphy0 {
+	status = "okay";
+};
+
+&dsi0 {
+	status = "okay";
+	#address-cells = <1>;
+	#size-cells = <0>;
+
+	ports {
+		dsi0_in: port@0 {
+			reg = <0>;
+			dsi0_in_vp1: endpoint {
+				remote-endpoint = <&vp1_out_dsi0>;
+			};
+		};
+
+		dsi0_out: port@1 {
+			reg = <1>;
+			mipi_out_panel: endpoint {
+				remote-endpoint = <&mipi_in_panel>;
+			};
+		};
+	};
+
+	panel: panel@0 {
+		compatible = "anbernic,rg-arc-panel", "sitronix,st7701";
+		reg = <0>;
+		backlight = <&backlight>;
+		IOVCC-supply = <&vcc3v3_lcd0_n>;
+		pinctrl-names = "default";
+		pinctrl-0 = <&lcd_rst>;
+		reset-gpios = <&gpio4 RK_PA0 GPIO_ACTIVE_HIGH>;
+		rotation = <90>;
+		VCC-supply = <&vcc3v3_lcd0_n>;
+
+		port {
+			mipi_in_panel: endpoint {
+				remote-endpoint = <&mipi_out_panel>;
+			};
+		};
+	};
+};
+
+/*
+ * Device uses a non-standard six button layout for a gamepad with X,
+ * Y, and Z on the top row of buttons and A, B, and C under the bottom
+ * row.
+ */
+&gpio_keys_control {
+	button-a {
+		gpios = <&gpio3 RK_PC3 GPIO_ACTIVE_LOW>;
+		label = "A";
+		linux,code = <BTN_A>;
+	};
+
+	button-b {
+		gpios = <&gpio3 RK_PC2 GPIO_ACTIVE_LOW>;
+		label = "B";
+		linux,code = <BTN_B>;
+	};
+
+	button-c {
+		gpios = <&gpio3 RK_PA2 GPIO_ACTIVE_LOW>;
+		label = "C";
+		linux,code = <BTN_C>;
+	};
+
+	button-left {
+		gpios = <&gpio3 RK_PA6 GPIO_ACTIVE_LOW>;
+		label = "DPAD-LEFT";
+		linux,code = <BTN_DPAD_LEFT>;
+	};
+
+	button-r1 {
+		gpios = <&gpio3 RK_PB4 GPIO_ACTIVE_LOW>;
+		label = "TR";
+		linux,code = <BTN_TR>;
+	};
+
+	button-r2 {
+		gpios = <&gpio3 RK_PB3 GPIO_ACTIVE_LOW>;
+		label = "TR2";
+		linux,code = <BTN_TR2>;
+	};
+
+	button-right {
+		gpios = <&gpio3 RK_PA5 GPIO_ACTIVE_LOW>;
+		label = "DPAD-RIGHT";
+		linux,code = <BTN_DPAD_RIGHT>;
+	};
+
+	button-x {
+		gpios = <&gpio3 RK_PC0 GPIO_ACTIVE_LOW>;
+		label = "X";
+		linux,code = <BTN_X>;
+	};
+
+	button-y {
+		gpios = <&gpio3 RK_PC1 GPIO_ACTIVE_LOW>;
+		label = "Y";
+		linux,code = <BTN_Y>;
+	};
+
+	button-z {
+		gpios = <&gpio3 RK_PA1 GPIO_ACTIVE_LOW>;
+		label = "Z";
+		linux,code = <BTN_Z>;
+	};
+};
+
+&pinctrl {
+	audio-amplifier {
+		spk_amp_enable_h: spk-amp-enable-h {
+			rockchip,pins =
+				<4 RK_PC2 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	gpio-lcd {
+		lcd_rst: lcd-rst {
+			rockchip,pins =
+				<4 RK_PA0 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+
+	headphone {
+		hp_det: hp-det {
+			rockchip,pins =
+				<4 RK_PC6 RK_FUNC_GPIO &pcfg_pull_none>;
+		};
+	};
+};
+
+&pwm4 {
+	status = "okay";
+};
+
+&rk817 {
+	rk817_charger: charger {
+		monitored-battery = <&battery>;
+		rockchip,resistor-sense-micro-ohms = <10000>;
+		rockchip,sleep-enter-current-microamp = <300000>;
+		rockchip,sleep-filter-current-microamp = <100000>;
+	};
+};
+
+&vp1 {
+	vp1_out_dsi0: endpoint@ROCKCHIP_VOP2_EP_MIPI0 {
+		reg = <ROCKCHIP_VOP2_EP_MIPI0>;
+		remote-endpoint = <&dsi0_in_vp1>;
+	};
+};