u-boot/arch/arm/dts/k3-am654-base-board.dts

// SPDX-License-Identifier: GPL-2.0
/*
 * Copyright (C) 2016-2018 Texas Instruments Incorporated - http://www.ti.com/
 */

/dts-v1/;

#include "k3-am654.dtsi"
#include <dt-bindings/pinctrl/k3.h>

/ {
	compatible =  "ti,am654-evm", "ti,am654";
	model = "Texas Instruments AM654 Base Board";

	chosen {
		stdout-path = "serial2:115200n8";
		bootargs = "earlycon=ns16550a,mmio32,0x02800000";
	};

	memory@80000000 {
		device_type = "memory";
		/* 4G RAM */
		reg = <0x00000000 0x80000000 0x00000000 0x80000000>,
		      <0x00000008 0x80000000 0x00000000 0x80000000>;
	};

	reserved-memory {
		#address-cells = <2>;
		#size-cells = <2>;
		ranges;
		secure_ddr: secure_ddr@9e800000 {
			reg = <0 0x9e800000 0 0x01800000>; /* for OP-TEE */
			alignment = <0x1000>;
			no-map;
		};
	};
};

&main_pmx0 {
	main_mmc0_pins_default: main_mmc0_pins_default {
		pinctrl-single,pins = <
			AM65X_IOPAD(0x01a8, PIN_INPUT_PULLDOWN, 0)	/* (B25) MMC0_CLK */
			AM65X_IOPAD(0x01aC, PIN_INPUT_PULLUP, 0)	/* (B27) MMC0_CMD */
			AM65X_IOPAD(0x01a4, PIN_INPUT_PULLUP, 0)	/* (A26) MMC0_DAT0 */
			AM65X_IOPAD(0x01a0, PIN_INPUT_PULLUP, 0)	/* (E25) MMC0_DAT1 */
			AM65X_IOPAD(0x019c, PIN_INPUT_PULLUP, 0)	/* (C26) MMC0_DAT2 */
			AM65X_IOPAD(0x0198, PIN_INPUT_PULLUP, 0)	/* (A25) MMC0_DAT3 */
			AM65X_IOPAD(0x0194, PIN_INPUT_PULLUP, 0)	/* (E24) MMC0_DAT4 */
			AM65X_IOPAD(0x0190, PIN_INPUT_PULLUP, 0)	/* (A24) MMC0_DAT5 */
			AM65X_IOPAD(0x018c, PIN_INPUT_PULLUP, 0)	/* (B26) MMC0_DAT6 */
			AM65X_IOPAD(0x0188, PIN_INPUT_PULLUP, 0)	/* (D25) MMC0_DAT7 */
			AM65X_IOPAD(0x01b4, PIN_INPUT_PULLUP, 0)	/* (A23) MMC0_SDCD */
			AM65X_IOPAD(0x01b0, PIN_INPUT, 0)		/* (C25) MMC0_DS */
		>;
	};
};

&wkup_pmx0 {
	wkup_i2c0_pins_default: wkup-i2c0-pins-default {
		pinctrl-single,pins = <
			AM65X_WKUP_IOPAD(0x00e0, PIN_INPUT, 0) /* (AC7) WKUP_I2C0_SCL */
			AM65X_WKUP_IOPAD(0x00e4, PIN_INPUT, 0) /* (AD6) WKUP_I2C0_SDA */
		>;
	};
};

&sdhci0 {
	pinctrl-names = "default";
	pinctrl-0 = <&main_mmc0_pins_default>;
	bus-width = <8>;
	non-removable;
	ti,driver-strength-ohm = <50>;
};

&wkup_i2c0 {
	pinctrl-names = "default";
	pinctrl-0 = <&wkup_i2c0_pins_default>;
	clock-frequency = <400000>;

	tca9554: gpio@38 {
		compatible = "nxp,pca9554";
		reg = <0x38>;
		gpio-controller;
		#gpio-cells = <2>;
	};
};