linux-zen-server/arch/arm/boot/dts/meson8b-ec100.dts

// SPDX-License-Identifier: (GPL-2.0+ OR MIT)
/*
 * Copyright (c) 2018 Martin Blumenstingl <martin.blumenstingl@googlemail.com>.
 */

/dts-v1/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/input/input.h>

#include "meson8b.dtsi"

/ {
	model = "Endless Computers Endless Mini";
	compatible = "endless,ec100", "amlogic,meson8b";

	aliases {
		serial0 = &uart_AO;
	};

	chosen {
		stdout-path = "serial0:115200n8";
	};

	memory {
		device_type = "memory";
		reg = <0x40000000 0x40000000>;
	};

	emmc_pwrseq: emmc-pwrseq {
		compatible = "mmc-pwrseq-emmc";
		reset-gpios = <&gpio BOOT_9 GPIO_ACTIVE_LOW>;
	};

	gpio-keys {
		compatible = "gpio-keys-polled";
		#address-cells = <1>;
		#size-cells = <0>;
		poll-interval = <100>;

		pal-switch {
			label = "pal";
			linux,input-type = <EV_SW>;
			linux,code = <KEY_SWITCHVIDEOMODE>;
			gpios = <&gpio GPIOH_7 GPIO_ACTIVE_LOW>;
		};

		ntsc-switch {
			label = "ntsc";
			linux,input-type = <EV_SW>;
			linux,code = <KEY_SWITCHVIDEOMODE>;
			gpios = <&gpio GPIOH_8 GPIO_ACTIVE_HIGH>;
		};

		power-button {
			label = "power";
			linux,code = <KEY_POWER>;
			gpios = <&gpio GPIOH_9 GPIO_ACTIVE_LOW>;
		};
	};

	gpio-poweroff {
		compatible = "gpio-poweroff";
		/*
		 * shutdown is managed by the EC (embedded micro-controller)
		 * which is configured through GPIOAO_2 (poweroff GPIO) and
		 * GPIOAO_7 (power LED, which has to go LOW as well).
		 */
		gpios = <&gpio_ao GPIOAO_2 GPIO_ACTIVE_LOW>;
		timeout-ms = <20000>;
	};

	leds {
		compatible = "gpio-leds";

		led-power {
			label = "ec100:red:power";
			/*
			 * Needs to go LOW (together with the poweroff GPIO)
			 * during shutdown to allow the EC (embedded
			 * micro-controller) to shutdown the system. Setting
			 * the output to LOW signals the EC to start a
			 * "breathing"/pulsing effect until the power is fully
			 * turned off.
			 */
			gpios = <&gpio_ao GPIOAO_7 GPIO_ACTIVE_HIGH>;
			default-state = "on";
		};
	};

	rtc32k_xtal: rtc32k-xtal-clk {
		/* X2 in the schematics */
		compatible = "fixed-clock";
		clock-frequency = <32768>;
		clock-output-names = "RTC32K";
		#clock-cells = <0>;
	};

	sound {
		compatible = "amlogic,gx-sound-card";
		model = "M8B-EC100";

		assigned-clocks = <&clkc CLKID_MPLL0>,
				  <&clkc CLKID_MPLL1>,
				  <&clkc CLKID_MPLL2>;
		assigned-clock-rates = <270950400>,
				       <294912000>,
				       <393216000>;

		dai-link-0 {
			sound-dai = <&aiu AIU_CPU CPU_I2S_FIFO>;
		};

		dai-link-1 {
			sound-dai = <&aiu AIU_CPU CPU_I2S_ENCODER>;
			dai-format = "i2s";
			mclk-fs = <256>;

			codec-0 {
				sound-dai = <&rt5640>;
			};
		};
	};

	usb_vbus: regulator-usb-vbus {
		/*
		 * Silergy SY6288CCAC-GP 2A Power Distribution Switch.
		 */
		compatible = "regulator-fixed";

		regulator-name = "USB_VBUS";

		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;

		vin-supply = <&vcc_5v>;

		/*
		 * signal name from the schematics: USB_PWR_EN
		 */
		gpio = <&gpio_ao GPIOAO_5 GPIO_ACTIVE_HIGH>;
		enable-active-high;
	};

	vcc_5v: regulator-vcc5v {
		/*
		 * supplied by the main power input which called PWR_5V_STB
		 * in the schematics
		 */
		compatible = "regulator-fixed";

		regulator-name = "VCC5V";

		regulator-min-microvolt = <5000000>;
		regulator-max-microvolt = <5000000>;

		/*
		 * signal name from the schematics: 3V3_5V_EN
		 */
		gpio = <&gpio GPIODV_29 GPIO_ACTIVE_LOW>;

		regulator-boot-on;
		regulator-always-on;
	};

	vcck: regulator-vcck {
		/*
		 * Silergy SY8089AAC-GP 2A continuous, 3A peak, 1MHz
		 * Synchronous Step Down Regulator.
		 */
		compatible = "pwm-regulator";

		regulator-name = "VCCK";
		regulator-min-microvolt = <860000>;
		regulator-max-microvolt = <1140000>;

		pwm-supply = <&vcc_5v>;

		pwms = <&pwm_cd 0 1148 0>;
		pwm-dutycycle-range = <100 0>;

		regulator-boot-on;
		regulator-always-on;
	};

	vcc_1v8: regulator-vcc1v8 {
		/*
		 * ABLIC S-1339D18-M5001-GP
		 */
		compatible = "regulator-fixed";

		regulator-name = "VCC1V8";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;

		vin-supply = <&vcc_3v3>;
	};

	vcc_3v3: regulator-vcc3v3 {
		/*
		 * Silergy SY8089AAC-GP 2A continuous, 3A peak, 1MHz
		 * Synchronous Step Down Regulator. Also called
		 * VDDIO_AO3.3V in the schematics.
		 */
		compatible = "regulator-fixed";

		regulator-name = "VCC3V3";
		regulator-min-microvolt = <3300000>;
		regulator-max-microvolt = <3300000>;

		vin-supply = <&vcc_5v>;
	};

	vcc_ddr3: regulator-vcc-ddr3 {
		/*
		 * Silergy SY8089AAC-GP 2A continuous, 3A peak, 1MHz
		 * Synchronous Step Down Regulator. Also called
		 * DDR3_1.5V in the schematics.
		 */
		compatible = "regulator-fixed";

		regulator-name = "VCC_DDR3_1V5";
		regulator-min-microvolt = <1500000>;
		regulator-max-microvolt = <1500000>;

		vin-supply = <&vcc_5v>;

		regulator-boot-on;
		regulator-always-on;
	};

	vcc_rtc: regulator-vcc-rtc {
		/*
		 * Global Mixed-mode Technology Inc. G918T12U-GP
		 */
		compatible = "regulator-fixed";

		regulator-name = "VCC_RTC";
		regulator-min-microvolt = <900000>;
		regulator-max-microvolt = <900000>;

		/*
		 * When the board is powered then the input is VCC3V3,
		 * otherwise power is taken from the coin cell battery.
		 */
		vin-supply = <&vcc_3v3>;
	};

	vddee: regulator-vddee {
		/*
		 * Silergy SY8089AAC-GP 2A continuous, 3A peak, 1MHz
		 * Synchronous Step Down Regulator. Also called VDDAO
		 * in a part of the schematics.
		 */
		compatible = "pwm-regulator";

		regulator-name = "VDDEE";
		regulator-min-microvolt = <860000>;
		regulator-max-microvolt = <1140000>;

		pwm-supply = <&vcc_5v>;

		pwms = <&pwm_cd 1 1148 0>;
		pwm-dutycycle-range = <100 0>;

		regulator-boot-on;
		regulator-always-on;
	};
};

&aiu {
	status = "okay";

	pinctrl-0 = <&i2s_am_clk_pins>, <&i2s_out_ao_clk_pins>,
		    <&i2s_out_lr_clk_pins>, <&i2s_out_ch01_ao_pins>;
	pinctrl-names = "default";
};

&cpu0 {
	cpu-supply = <&vcck>;
};

&ethmac {
	status = "okay";

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

	phy-handle = <&eth_phy0>;
	phy-mode = "rmii";

	mdio {
		compatible = "snps,dwmac-mdio";
		#address-cells = <1>;
		#size-cells = <0>;

		eth_phy0: ethernet-phy@0 {
			/* IC Plus IP101A/G (0x02430c54) */
			reg = <0>;

			reset-assert-us = <10000>;
			reset-deassert-us = <10000>;
			reset-gpios = <&gpio GPIOH_4 GPIO_ACTIVE_LOW>;

			icplus,select-interrupt;
			interrupt-parent = <&gpio_intc>;
			/* GPIOH_3 */
			interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
		};
	};
};

&i2c_A {
	status = "okay";
	pinctrl-0 = <&i2c_a_pins>;
	pinctrl-names = "default";

	rt5640: codec@1c {
		compatible = "realtek,rt5640";

		reg = <0x1c>;

		#sound-dai-cells = <0>;

		interrupt-parent = <&gpio_intc>;
		interrupts = <13 IRQ_TYPE_EDGE_BOTH>; /* GPIOAO_13 */

		/*
		 * TODO: realtek,ldo1-en-gpios is connected to GPIO_BSD_EN.
		 * We currently cannot configure this pin correctly.
		 * Luckily for us it's in the "right" state by default.
		 */
		realtek,in1-differential;
	};
};

&mali {
	mali-supply = <&vddee>;
};

&saradc {
	status = "okay";
	vref-supply = <&vcc_1v8>;
};

&sdhc {
	status = "okay";

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

	bus-width = <8>;
	max-frequency = <50000000>;

	cap-mmc-highspeed;
	disable-wp;
	non-removable;
	no-sdio;

	mmc-pwrseq = <&emmc_pwrseq>;

	vmmc-supply = <&vcc_3v3>;
	vqmmc-supply = <&vcc_3v3>;
};

&sdio {
	status = "okay";

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

	/* SD card */
	sd_card_slot: slot@1 {
		compatible = "mmc-slot";
		reg = <1>;
		status = "okay";

		bus-width = <4>;
		no-sdio;
		cap-mmc-highspeed;
		cap-sd-highspeed;
		disable-wp;

		cd-gpios = <&gpio CARD_6 GPIO_ACTIVE_LOW>;

		vmmc-supply = <&vcc_3v3>;
	};
};

&gpio_ao {
	gpio-line-names = "Linux_TX", "Linux_RX",
			  "SLP_S5_N", "USB2_OC_FLAG#",
			  "HUB_RST", "USB_PWR_EN",
			  "I2S_IN", "SLP_S1_N",
			  "TCK", "TMS", "TDI", "TDO",
			  "HDMI_CEC", "5640_IRQ",
			  "MUTE", "S805_TEST#";
};

&gpio {
	gpio-line-names = /* Bank GPIOX */
			  "WIFI_SD_D0", "WIFI_SD_D1", "WIFI_SD_D2",
			  "WIFI_SD_D3", "BTPCM_DOUT", "BTPCM_DIN",
			  "BTPCM_SYNC", "BTPCM_CLK", "WIFI_SD_CLK",
			  "WIFI_SD_CMD", "WIFI_32K", "WIFI_PWREN",
			  "UART_B_TX", "UART_B_RX", "UART_B_CTS_N",
			  "UART_B_RTS_N", "BT_EN", "WIFI_WAKE_HOST",
			  /* Bank GPIOY */
			  "", "", "", "", "", "", "", "", "", "",
			  "", "",
			  /* Bank GPIODV */
			  "VCCK_PWM_C", "I2C_SDA_A", "I2C_SCL_A",
			  "I2C_SDA_B", "I2C_SCL_B", "VDDEE_PWM_D",
			  "VDDEE_PWM 3V3_5V_EN",
			  /* Bank GPIOH */
			  "HDMI_HPD", "HDMI_I2C_SDA", "HDMI_I2C_SCL",
			  "RMII_IRQ", "RMII_RST#", "RMII_TXD1",
			  "RMII_TXD0", "AV_select_1", "AV_select_2",
			  "MCU_Control_S",
			  /* Bank CARD */
			  "SD_D1_B", "SD_D0_B", "SD_CLK_8726MX",
			  "SD_CMD_8726MX", "SD_D3_B", "SD_D2_B",
			  "CARD_EN_DET (CARD_DET)",
			  /* Bank BOOT */
			  "NAND_D0 (EMMC)", "NAND_D1 (EMMC)",
			  "NAND_D2 (EMMC)", "NAND_D3 (EMMC)",
			  "NAND_D4 (EMMC)", "NAND_D5 (EMMC)",
			  "NAND_D6 (EMMC)", "NAND_D7 (EMMC)",
			  "NAND_CS1 (EMMC)", "NAND_CS2 iNAND_RS1 (EMMC)",
			  "NAND_nR/B iNAND_CMD (EMMC)", "NAND_ALE (EMMC)",
			  "NAND_CLE (EMMC)", "nRE_S1 NAND_nRE (EMMC)",
			  "nWE_S1 NAND_nWE (EMMC)",  "", "", "SPI_CS",
			  /* Bank DIF */
			  "RMII_RXD1", "RMII_RXD0", "RMII_CRS_DV",
			  "RMII_50M_IN", "GPIODIF_4", "GPIODIF_5",
			  "RMII_TXEN", "CPUETH_25MOUT", "RMII_MDC",
			  "RMII_MDIO";
};

&pwm_cd {
	status = "okay";
	pinctrl-0 = <&pwm_c1_pins>, <&pwm_d_pins>;
	pinctrl-names = "default";
	clocks = <&xtal>, <&xtal>;
	clock-names = "clkin0", "clkin1";
};

&rtc {
	status = "okay";
	clocks = <&rtc32k_xtal>;
	vdd-supply = <&vcc_rtc>;
};

/* exposed through the pin headers labeled "URDUG1" on the top of the PCB */
&uart_AO {
	status = "okay";
	pinctrl-0 = <&uart_ao_a_pins>;
	pinctrl-names = "default";
};

/*
 * connected to the Bluetooth part of the RTL8723BS SDIO wifi / Bluetooth
 * combo chip. This is only available on the variant with 2GB RAM.
 */
&uart_B {
	status = "okay";
	pinctrl-0 = <&uart_b0_pins>, <&uart_b0_cts_rts_pins>;
	pinctrl-names = "default";
	uart-has-rtscts;
};

&usb1 {
	status = "okay";
	vbus-supply = <&usb_vbus>;
};

&usb1_phy {
	status = "okay";
};