Commit ac6b1381 authored by Paul Cercueil's avatar Paul Cercueil Committed by Thomas Bogendoerfer
Browse files

MIPS: ingenic: Add support for the RS90 board 



The RS-90, better known as RetroMini, is a small and pocketable handheld
gaming console from YLMChina. It has little more than a JZ4725B SoC, a
NAND, a screen, some buttons and a speaker.

Signed-off-by: default avatarPaul Cercueil <paul@crapouillou.net>
Signed-off-by: default avatarThomas Bogendoerfer <tsbogend@alpha.franken.de>
parent c211ab5f

arch/mips/boot/dts/ingenic/Makefile

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# SPDX-License-Identifier: GPL-2.0

dtb-$(CONFIG_JZ4740_QI_LB60)	+= qi_lb60.dtb

dtb-$(CONFIG_JZ4740_RS90)	+= rs90.dtb

dtb-$(CONFIG_JZ4770_GCW0)	+= gcw0.dtb

dtb-$(CONFIG_JZ4780_CI20)	+= ci20.dtb

dtb-$(CONFIG_X1000_CU1000_NEO)	+= cu1000-neo.dtb

arch/mips/boot/dts/ingenic/rs90.dts

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// 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>;

	};



	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";

		#address-cells = <1>;

		#size-cells = <0>;



		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 {

	pinctrl-names = "default";

	pinctrl-0 = <&pins_lcd>;



	port {

		panel_output: endpoint {

			remote-endpoint = <&panel_input>;

		};

	};

};

arch/mips/jz4740/Kconfig

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@@ -15,6 +15,10 @@ config JZ4740_QI_LB60 
	bool "Qi Hardware Ben NanoNote"

	select MACH_JZ4740



config JZ4740_RS90

	bool "YLM RetroMini (RS-90)"

	select MACH_JZ4725B



config JZ4770_GCW0

	bool "Game Consoles Worldwide GCW Zero"

	select MACH_JZ4770