arm64: dts: allwinner: h700: Add RG35XX 2024 DTS

The base model RG35XX (2024) is a handheld gaming device based on an
Allwinner H700 chip.

The H700 is a H616 variant (4x ARM Cortex-A53 cores @ 1.5Ghz with Mali G31
GPU) which exposes RGB LCD and NMI pins.

Device features:
- Allwinner H700 @ 1.5GHz
- 1GB LPDDR4 DRAM
- X-Powers AXP717 PMIC
- 3.5" 640x480 RGB LCD
- Two microSD slots
- Mini-HDMI out
- GPIO keypad
- 3.5mm headphone jack
- USB-C charging port

Enabled in this DTS:
- AXP717 PMIC with RSB serial interface, regulators and NMI interrupt
  controller
- Power LED (charge LED on device controlled directly by PMIC)
- Serial UART (accessible from headers on the board)
- First SD slot (SD2 appears to have a GPIO-switched regulator for 1.8v
  low-voltage signalling, this is not yet modeled. Enablement with a
  switched regulator will be confirmed and posted in a follow-up patch).

Signed-off-by: Ryan Walklin <ryan@testtoast.com>
Reviewed-by: Jernej Skrabec <jernej.skrabec@gmail.com>
Reviewed-by: Andre Przywara <andre.przywara@arm.com>
Link: https://lore.kernel.org/r/20240427110225.727472-6-ryan@testtoast.com
Signed-off-by: Jernej Skrabec <jernej.skrabec@gmail.com>

2 files changed, 328 insertions, 0 deletions

diff --git a/arch/arm64/boot/dts/allwinner/Makefile b/arch/arm64/boot/dts/allwinner/Makefile
index c571971f2fac..4da4749f01d2 100644
--- a/arch/arm64/boot/dts/allwinner/Makefile
+++ b/arch/arm64/boot/dts/allwinner/Makefile
@@ -48,3 +48,4 @@ dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-longanpi-3h.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero2w.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-orangepi-zero3.dtb
 dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h618-transpeed-8k618-t.dtb
+dtb-$(CONFIG_ARCH_SUNXI) += sun50i-h700-anbernic-rg35xx-2024.dtb
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
new file mode 100644
index 000000000000..ee30584b6ad7
--- /dev/null
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h700-anbernic-rg35xx-2024.dts
@@ -0,0 +1,327 @@
+// SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+/*
+ * Copyright (C) 2024 Ryan Walklin <ryan@testtoast.com>.
+ */
+
+/dts-v1/;
+
+#include "sun50i-h616.dtsi"
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/input/linux-event-codes.h>
+#include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/leds/common.h>
+
+/ {
+	model = "Anbernic RG35XX 2024";
+	chassis-type = "handset";
+	compatible = "anbernic,rg35xx-2024", "allwinner,sun50i-h700";
+
+	aliases {
+		serial0 = &uart0;
+	};
+
+	chosen {
+		stdout-path = "serial0:115200n8";
+	};
+
+	gpio_keys_gamepad: gpio-keys-gamepad {
+		compatible = "gpio-keys";
+
+		button-a {
+			label = "Action-Pad A";
+			gpios = <&pio 0 0 GPIO_ACTIVE_LOW>; /* PA0 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_EAST>;
+		};
+
+		button-b {
+			label = "Action-Pad B";
+			gpios = <&pio 0 1 GPIO_ACTIVE_LOW>; /* PA1 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_SOUTH>;
+		};
+
+		button-down {
+			label = "D-Pad Down";
+			gpios = <&pio 4 0 GPIO_ACTIVE_LOW>; /* PE0 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_DPAD_DOWN>;
+		};
+
+		button-l1 {
+			label = "Key L1";
+			gpios = <&pio 0 10 GPIO_ACTIVE_LOW>; /* PA10 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_TL>;
+		};
+
+		button-l2 {
+			label = "Key L2";
+			gpios = <&pio 0 11 GPIO_ACTIVE_LOW>; /* PA11 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_TL2>;
+		};
+
+		button-left {
+			label = "D-Pad left";
+			gpios = <&pio 0 8 GPIO_ACTIVE_LOW>; /* PA8 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_DPAD_LEFT>;
+		};
+
+		button-menu {
+			label = "Key Menu";
+			gpios = <&pio 4 3 GPIO_ACTIVE_LOW>; /* PE3 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_MODE>;
+		};
+
+		button-r1 {
+			label = "Key R1";
+			gpios = <&pio 0 12 GPIO_ACTIVE_LOW>; /* PA12 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_TR>;
+		};
+
+		button-r2 {
+			label = "Key R2";
+			gpios = <&pio 0 7 GPIO_ACTIVE_LOW>; /* PA7 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_TR2>;
+		};
+
+		button-right {
+			label = "D-Pad Right";
+			gpios = <&pio 0 9 GPIO_ACTIVE_LOW>; /* PA9 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_DPAD_RIGHT>;
+		};
+
+		button-select {
+			label = "Key Select";
+			gpios = <&pio 0 5 GPIO_ACTIVE_LOW>; /* PA5 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_SELECT>;
+		};
+		button-start {
+			label = "Key Start";
+			gpios = <&pio 0 4 GPIO_ACTIVE_LOW>; /* PA4 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_START>;
+		};
+
+		button-up {
+			label = "D-Pad Up";
+			gpios = <&pio 0 6 GPIO_ACTIVE_LOW>; /* PA6 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_DPAD_UP>;
+		};
+
+		button-x {
+			label = "Action-Pad X";
+			gpios = <&pio 0 3 GPIO_ACTIVE_LOW>; /* PA3 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_NORTH>;
+		};
+
+		button-y {
+			label = "Action Pad Y";
+			gpios = <&pio 0 2 GPIO_ACTIVE_LOW>; /* PA2 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <BTN_WEST>;
+		};
+	};
+
+	gpio-keys-volume {
+		compatible = "gpio-keys";
+		autorepeat;
+
+		button-vol-up {
+			label = "Key Volume Up";
+			gpios = <&pio 4 1 GPIO_ACTIVE_LOW>; /* PE1 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <KEY_VOLUMEUP>;
+		};
+
+		button-vol-down {
+			label = "Key Volume Down";
+			gpios = <&pio 4 2 GPIO_ACTIVE_LOW>; /* PE2 */
+			linux,input-type = <EV_KEY>;
+			linux,code = <KEY_VOLUMEDOWN>;
+		};
+	};
+
+	leds {
+		compatible = "gpio-leds";
+
+		led-0 {
+			function = LED_FUNCTION_POWER;
+			color = <LED_COLOR_ID_GREEN>;
+			gpios = <&pio 8 12 GPIO_ACTIVE_HIGH>; /* PI12 */
+			default-state = "on";
+		};
+	};
+
+	reg_vcc5v: regulator-vcc5v { /* USB-C power input */
+		compatible = "regulator-fixed";
+		regulator-name = "vcc-5v";
+		regulator-min-microvolt = <5000000>;
+		regulator-max-microvolt = <5000000>;
+	};
+};
+
+&cpu0 {
+	cpu-supply = <&reg_dcdc1>;
+};
+
+&ehci0 {
+	status = "okay";
+};
+
+&mmc0 {
+	vmmc-supply = <&reg_cldo3>;
+	disable-wp;
+	cd-gpios = <&pio 5 6 GPIO_ACTIVE_LOW>;  /* PF6 */
+	bus-width = <4>;
+	status = "okay";
+};
+
+&ohci0 {
+	status = "okay";
+};
+
+&pio {
+	vcc-pa-supply = <&reg_cldo3>;
+	vcc-pc-supply = <&reg_cldo3>;
+	vcc-pe-supply = <&reg_cldo3>;
+	vcc-pf-supply = <&reg_cldo3>;
+	vcc-pg-supply = <&reg_aldo4>;
+	vcc-ph-supply = <&reg_cldo3>;
+	vcc-pi-supply = <&reg_cldo3>;
+};
+
+&r_rsb {
+	status = "okay";
+
+	axp717: pmic@3a3 {
+		compatible = "x-powers,axp717";
+		reg = <0x3a3>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		interrupt-parent = <&nmi_intc>;
+		interrupts = <0 IRQ_TYPE_LEVEL_LOW>;
+
+		vin1-supply = <&reg_vcc5v>;
+		vin2-supply = <&reg_vcc5v>;
+		vin3-supply = <&reg_vcc5v>;
+		vin4-supply = <&reg_vcc5v>;
+
+		regulators {
+			reg_dcdc1: dcdc1 {
+				regulator-always-on;
+				regulator-min-microvolt = <900000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-name = "vdd-cpu";
+			};
+
+			reg_dcdc2: dcdc2 {
+				regulator-always-on;
+				regulator-min-microvolt = <940000>;
+				regulator-max-microvolt = <940000>;
+				regulator-name = "vdd-gpu-sys";
+			};
+
+			reg_dcdc3: dcdc3 {
+				regulator-always-on;
+				regulator-min-microvolt = <1100000>;
+				regulator-max-microvolt = <1100000>;
+				regulator-name = "vdd-dram";
+			};
+
+			reg_aldo1: aldo1 {
+				/* 1.8v - unused */
+			};
+
+			reg_aldo2: aldo2 {
+				/* 1.8v - unused */
+			};
+
+			reg_aldo3: aldo3 {
+				/* 1.8v - unused */
+			};
+
+			reg_aldo4: aldo4 {
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-pg";
+			};
+
+			reg_bldo1: bldo1 {
+				/* 1.8v - unused */
+			};
+
+			reg_bldo2: bldo2 {
+				regulator-always-on;
+				regulator-min-microvolt = <1800000>;
+				regulator-max-microvolt = <1800000>;
+				regulator-name = "vcc-pll";
+			};
+
+			reg_bldo3: bldo3 {
+				/* 2.8v - unused */
+			};
+
+			reg_bldo4: bldo4 {
+				/* 1.2v - unused */
+			};
+
+			reg_cldo1: cldo1 {
+				/* 3.3v - audio codec - not yet implemented */
+			};
+
+			reg_cldo2: cldo2 {
+				/* 3.3v - unused */
+			};
+
+			reg_cldo3: cldo3 {
+				regulator-always-on;
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-io";
+			};
+
+			reg_cldo4: cldo4 {
+				regulator-min-microvolt = <3300000>;
+				regulator-max-microvolt = <3300000>;
+				regulator-name = "vcc-wifi";
+			};
+
+			reg_boost: boost {
+				regulator-min-microvolt = <5000000>;
+				regulator-max-microvolt = <5200000>;
+				regulator-name = "boost";
+			};
+
+			reg_cpusldo: cpusldo {
+				/* unused */
+			};
+		};
+	};
+};
+
+&uart0 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&uart0_ph_pins>;
+	status = "okay";
+};
+
+/* the AXP717 has USB type-C role switch functionality, not yet described by the binding */
+&usbotg {
+	dr_mode = "peripheral";   /* USB type-C receptable */
+	status = "okay";
+};
+
+&usbphy {
+	status = "okay";
+};