linux-zen-server/arch/mips/boot/dts/ingenic/rs90.dts

// SPDX-License-Identifier: GPL-2.0
/dts-v1/;

#include "jz4725b.dtsi"

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/iio/adc/ingenic,adc.h>
#include <dt-bindings/input/linux-event-codes.h>

/ {
	compatible = "ylm,rs90", "ingenic,jz4725b";
	model = "RS-90";

	memory {
		device_type = "memory";
		reg = <0x0 0x2000000>;
	};

	reserved-memory {
		#address-cells = <1>;
		#size-cells = <1>;
		ranges;

		vmem: video-memory@1f00000 {
			compatible = "shared-dma-pool";
			reg = <0x1f00000 0x100000>;
			reusable;
		};
	};

	vcc: regulator {
		compatible = "regulator-fixed";

		regulator-name = "vcc";
		regulaor-min-microvolt = <3300000>;
		regulaor-max-microvolt = <3300000>;
		regulator-always-on;
	};

	backlight: backlight {
		compatible = "pwm-backlight";
		pwms = <&pwm 3 40000 0>;

		brightness-levels = <0 16 32 48 64 80 112 144 192 255>;
		default-brightness-level = <8>;

		pinctrl-names = "default";
		pinctrl-0 = <&pins_pwm3>;

		power-supply = <&vcc>;
	};

	keys@0 {
		compatible = "gpio-keys";

		key-0 {
			label = "D-pad up";
			linux,code = <KEY_UP>;
			gpios = <&gpc 10 GPIO_ACTIVE_LOW>;
		};

		key-1 {
			label = "D-pad down";
			linux,code = <KEY_DOWN>;
			gpios = <&gpc 11 GPIO_ACTIVE_LOW>;
		};

		key-2 {
			label = "D-pad left";
			linux,code = <KEY_LEFT>;
			gpios = <&gpb 31 GPIO_ACTIVE_LOW>;
		};

		key-3 {
			label = "D-pad right";
			linux,code = <KEY_RIGHT>;
			gpios = <&gpd 21 GPIO_ACTIVE_LOW>;
		};

		key-4 {
			label = "Button A";
			linux,code = <KEY_LEFTCTRL>;
			gpios = <&gpc 31 GPIO_ACTIVE_LOW>;
		};

		key-5 {
			label = "Button B";
			linux,code = <KEY_LEFTALT>;
			gpios = <&gpc 30 GPIO_ACTIVE_LOW>;
		};

		key-6 {
			label = "Right shoulder button";
			linux,code = <KEY_BACKSPACE>;
			gpios = <&gpc 12 GPIO_ACTIVE_LOW>;
			debounce-interval = <10>;
		};

		key-7 {
			label = "Start button";
			linux,code = <KEY_ENTER>;
			gpios = <&gpd 17 GPIO_ACTIVE_LOW>;
		};
	};

	keys@1 {
		compatible = "adc-keys";
		io-channels = <&adc INGENIC_ADC_AUX>;
		io-channel-names = "buttons";
		keyup-threshold-microvolt = <1400000>;
		poll-interval = <30>;

		key@0 {
			label = "Left shoulder button";
			linux,code = <KEY_TAB>;
			press-threshold-microvolt = <800000>;
		};

		key@1 {
			label = "Select button";
			linux,code = <KEY_ESC>;
			press-threshold-microvolt = <1100000>;
		};
	};

	amp: analog-amplifier {
		compatible = "simple-audio-amplifier";
		enable-gpios = <&gpc 15 GPIO_ACTIVE_HIGH>;

		VCC-supply = <&vcc>;
	};

	sound {
		compatible = "simple-audio-card";

		simple-audio-card,name = "rs90-audio";
		simple-audio-card,format = "i2s";

		simple-audio-card,widgets =
			"Speaker", "Speaker",
			"Headphone", "Headphones";
		simple-audio-card,routing =
			"INL", "LHPOUT",
			"INR", "RHPOUT",
			"Headphones", "LHPOUT",
			"Headphones", "RHPOUT",
			"Speaker", "OUTL",
			"Speaker", "OUTR";
		simple-audio-card,pin-switches = "Speaker";

		simple-audio-card,hp-det-gpio = <&gpd 16 GPIO_ACTIVE_LOW>;
		simple-audio-card,aux-devs = <&amp>;

		simple-audio-card,bitclock-master = <&dai_codec>;
		simple-audio-card,frame-master = <&dai_codec>;

		dai_cpu: simple-audio-card,cpu {
			sound-dai = <&aic>;
		};

		dai_codec: simple-audio-card,codec {
			sound-dai = <&codec>;
		};

	};

	usb_phy: usb-phy {
		compatible = "usb-nop-xceiv";
		#phy-cells = <0>;

		clocks = <&cgu JZ4725B_CLK_UDC_PHY>;
		clock-names = "main_clk";
		vcc-supply = <&vcc>;
	};

	panel {
		compatible = "sharp,ls020b1dd01d";

		backlight = <&backlight>;
		power-supply = <&vcc>;

		port {
			panel_input: endpoint {
				remote-endpoint = <&panel_output>;
			};
		};
	};
};

&ext {
	clock-frequency = <12000000>;
};

&rtc_dev {
	system-power-controller;
};

&udc {
	phys = <&usb_phy>;
};

&pinctrl {
	pins_mmc1: mmc1 {
		function = "mmc1";
		groups = "mmc1-1bit";
	};

	pins_nemc: nemc {
		function = "nand";
		groups = "nand-cs1", "nand-cle-ale", "nand-fre-fwe";
	};

	pins_pwm3: pwm3 {
		function = "pwm3";
		groups = "pwm3";
		bias-disable;
	};

	pins_lcd: lcd {
		function = "lcd";
		groups = "lcd-8bit", "lcd-16bit", "lcd-special";
	};
};

&mmc0 {
	status = "disabled";
};

&mmc1 {
	bus-width = <1>;
	max-frequency = <48000000>;

	pinctrl-names = "default";
	pinctrl-0 = <&pins_mmc1>;

	cd-gpios = <&gpc 20 GPIO_ACTIVE_LOW>;
};

&uart {
	/*
	 * The pins for RX/TX are used for the right shoulder button and
	 * backlight PWM.
	 */
	status = "disabled";
};

&nemc {
	nandc: nand-controller@1 {
		compatible = "ingenic,jz4725b-nand";
		reg = <1 0 0x4000000>;

		#address-cells = <1>;
		#size-cells = <0>;

		ecc-engine = <&bch>;

		ingenic,nemc-tAS = <10>;
		ingenic,nemc-tAH = <5>;
		ingenic,nemc-tBP = <10>;
		ingenic,nemc-tAW = <15>;
		ingenic,nemc-tSTRV = <100>;

		pinctrl-names = "default";
		pinctrl-0 = <&pins_nemc>;

		rb-gpios = <&gpc 27 GPIO_ACTIVE_HIGH>;

		nand@1 {
			reg = <1>;

			nand-ecc-step-size = <512>;
			nand-ecc-strength = <8>;
			nand-ecc-mode = "hw";
			nand-is-boot-medium;
			nand-on-flash-bbt;

			partitions {
				compatible = "fixed-partitions";
				#address-cells = <1>;
				#size-cells = <1>;

				partition@0 {
					label = "bootloader";
					reg = <0x0 0x20000>;
				};

				partition@20000 {
					label = "system";
					reg = <0x20000 0x0>;
				};
			};
		};
	};
};

&cgu {
	/* Use 32kHz oscillator as the parent of the RTC clock */
	assigned-clocks = <&cgu JZ4725B_CLK_RTC>;
	assigned-clock-parents = <&cgu JZ4725B_CLK_OSC32K>;
};

&tcu {
	/*
	 * 750 kHz for the system timer and clocksource, and use RTC as the
	 * parent for the watchdog clock.
	 */
	assigned-clocks = <&tcu TCU_CLK_TIMER0>, <&tcu TCU_CLK_TIMER1>, <&tcu TCU_CLK_WDT>;
	assigned-clock-parents = <0>, <0>, <&cgu JZ4725B_CLK_RTC>;
	assigned-clock-rates = <750000>, <750000>;
};

&lcd {
	memory-region = <&vmem>;

	pinctrl-names = "default";
	pinctrl-0 = <&pins_lcd>;
};

&lcd_ports {
	port@0 {
		reg = <0>;

		panel_output: endpoint {
			remote-endpoint = <&panel_input>;
		};
	};
};