linux_dsm_epyc7002/arch/arm/boot/dts/ste-nomadik-s8815.dts

/*
 * Device Tree for the ST-Ericsson Nomadik S8815 board
 * Produced by Calao Systems
 */

/dts-v1/;
/include/ "ste-nomadik-stn8815.dtsi"

/ {
	model = "Calao Systems USB-S8815";
	compatible = "calaosystems,usb-s8815";

	chosen {
		bootargs = "root=/dev/ram0 console=ttyAMA1,115200n8 earlyprintk";
	};

	/* This is where the interrupt is routed on the S8815 board */
	external-bus@34000000 {
		ethernet@300 {
			interrupt-parent = <&gpio3>;
			interrupts = <8 0x1>;
		};
	};

	src@101e0000 {
		/* These chrystal drivers are not used on this board */
		disable-sxtalo;
		disable-mxtalo;
	};

	pinctrl {
		/* Hog CD pins */
		pinctrl-names = "default";
		pinctrl-0 = <&cd_default_mode>;

		mmcsd-cd {
			cd_default_mode: cd_default {
				cd_default_cfg1 {
					/* CD input GPIO */
					ste,pins = "GPIO111_H21";
					ste,input = <0>;
				};
				cd_default_cfg2 {
					/* CD GPIO biasing */
					ste,pins = "GPIO112_J21";
					ste,output = <0>;
				};
			};
		};
		user-led {
			user_led_default_mode: user_led_default {
				user_led_default_cfg {
					ste,pins = "GPIO2_C5";
					ste,output = <1>;
				};
			};
		};
		user-button {
			user_button_default_mode: user_button_default {
				user_button_default_cfg {
					ste,pins = "GPIO3_A4";
					ste,input = <0>;
				};
			};
		};
	};

	/* Custom board node with GPIO pins to active etc */
	usb-s8815 {
		/* This will bias the MMC/SD card detect line */
		mmcsd-gpio {
			gpios = <&gpio3 16 0x1>;
		};
	};

	/* The user LED on the board is set up to be used for heartbeat */
	leds {
		compatible = "gpio-leds";
		user-led {
			label = "user_led";
			gpios = <&gpio0 2 0x1>;
			default-state = "off";
			linux,default-trigger = "heartbeat";
			pinctrl-names = "default";
			pinctrl-0 = <&user_led_default_mode>;
		};
	};

	/* User key mapped in as "escape" */
	gpio-keys {
		compatible = "gpio-keys";
		user-button {
			label = "user_button";
			gpios = <&gpio0 3 0x1>;
			linux,code = <1>; /* KEY_ESC */
			gpio-key,wakeup;
			pinctrl-names = "default";
			pinctrl-0 = <&user_button_default_mode>;
		};
	};
};