u-boot/arch/x86/dts/edison.dts

// SPDX-License-Identifier: GPL-2.0+
/*
 * Copyright (c) 2017 Intel Corporation
 */

/dts-v1/;

#include <dt-bindings/gpio/x86-gpio.h>
#include <dt-bindings/interrupt-router/intel-irq.h>

/include/ "skeleton.dtsi"
/include/ "rtc.dtsi"

#include "tsc_timer.dtsi"
#include "smbios.dtsi"

/ {
	model = "Intel Edison";
	compatible = "intel,edison", "intel,tangier";

	aliases {
		serial0 = &serial0;
		serial1 = &serial1;
		serial2 = &serial2;
	};

	binman: binman {
		multiple-images;
	};

	chosen {
		stdout-path = &serial2;
	};

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

		cpu@0 {
			device_type = "cpu";
			compatible = "cpu-x86";
			reg = <0>;
			intel,apic-id = <0>;
		};

		cpu@1 {
			device_type = "cpu";
			compatible = "cpu-x86";
			reg = <1>;
			intel,apic-id = <2>;
		};
	};

	pci {
		compatible = "pci-x86";
		#address-cells = <3>;
		#size-cells = <2>;
		u-boot,dm-pre-reloc;
		ranges = <0x02000000 0x0 0x80000000 0x80000000 0 0x40000000
			  0x42000000 0x0 0xc0000000 0xc0000000 0 0x20000000
			  0x01000000 0x0 0x2000 0x2000 0 0xe000>;
	};

	serial0: serial@ff010080 {
		compatible = "intel,mid-uart";
		reg = <0xff010080 0x100>;
		reg-shift = <0>;
		clock-frequency = <29491200>;
		current-speed = <115200>;
	};

	serial1: serial@ff010100 {
		compatible = "intel,mid-uart";
		reg = <0xff010100 0x100>;
		reg-shift = <0>;
		clock-frequency = <29491200>;
		current-speed = <115200>;
	};

	serial2: serial@ff010180 {
		compatible = "intel,mid-uart";
		reg = <0xff010180 0x100>;
		reg-shift = <0>;
		clock-frequency = <29491200>;
		current-speed = <115200>;
	};

	emmc: mmc@ff3fc000 {
		compatible = "intel,sdhci-tangier";
		reg = <0xff3fc000 0x1000>;
		non-removable;
	};

	sdcard: mmc@ff3fa000 {
		compatible = "intel,sdhci-tangier";
		reg = <0xff3fa000 0x1000>;
		/*
		 * In the disconnected state of the SD Card Detection pin
		 * the read value is always the same and inverted to what
		 * we are expecting in the code.
		 */
		cd-inverted;
	};

	pmu: power@ff00b000 {
		compatible = "intel,pmu-mid";
		reg = <0xff00b000 0x1000>;
	};

	scu: ipc@ff009000 {
		compatible = "intel,scu-ipc";
		reg = <0xff009000 0x1000>;
	};

	usb: usb@f9100000 {
		compatible = "intel,tangier-dwc3";
		#address-cells = <1>;
		#size-cells = <1>;

		dwc3: dwc3 {
			reg = <0xf9100000 0x100000>;
			maximum-speed = "high-speed";
			dr_mode = "peripheral";
		};
	};

	watchdog: wdt@0 {
		compatible = "intel,tangier-wdt";
	};

	reset {
		compatible = "intel,reset-tangier";
		u-boot,dm-pre-reloc;
	};

	pinctrl {
		compatible = "intel,pinctrl-tangier";
		reg = <0xff0c0000 0x8000>;

		/*
		 * Disconnect SD card detection pin, so it won't affect
		 * the reality on two different PCB designs where it's
		 * using the opposite signaling: Edison/Arduino uses
		 * Active Low, while SparkFun went with Active High.
		 */
		sd_cd@0 {
			pad-offset = <37>;
			mode-func = <3>;
		};

		/*
		 * Initial configuration came from the firmware.
		 * Which quite likely has been used in the phones, where I2C #8,
		 * that is not part of Atom peripheral, is in use.
		 * Thus we need to override the leftover.
		 */
		i2c6_scl@0 {
			pad-offset = <111>;
			mode-func = <1>;
			protected;
		};
		i2c6_sda@0 {
			pad-offset = <112>;
			mode-func = <1>;
			protected;
		};
	};
};

&binman {
	u-boot-edison {
		filename = "u-boot-edison.img";

		/* This is the OSIP */
		blob {
			filename = "edison-osip.dat";
		};

		u-boot {
			offset = <0x200>;
		};

		u-boot-env {
			offset = <0x200200>;
			filename = "edison-environment.txt";
			size = <0x10000>;
			fill-byte = [ff];
		};

		u-boot-env2 {
			type = "u-boot-env";
			offset = <0x500200>;
			filename = "edison-environment.txt";
			size = <0x10000>;
			fill-byte = [ff];
		};
	};
};