BBBLUE-GP0-SPI-00A0.dts

/*
 * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 * GP0_1 -> GND
 * GP0_2 -> 3.3V
 * GP0_3 -> GPIO1_25 -> MOSI
 * GP0_4 -> GPIO1_17 -> MISO
 * GP0_5 -> GPIO3_20 -> SCLK
 * GP0_6 -> GPIO3_17 -> CS
 *
 */

/dts-v1/;
/plugin/;

/ {
	compatible = "ti,am335x-bone-blue", "ti,beaglebone", "ti,beaglebone-black";

	/* identification */
	part-number = "BBBLUE-GP0-SPI";
	version = "00A0";

	fragment@0 {
		target-path = "/";
		__overlay__ {
			spi_gp0: spi_gp0 {
				compatible = "spi-gpio";
				
				#address-cells = <1>;
				#size-cells = <0>;
				ranges;
		
				mosi-gpios = <&gpio1 25 0>;
				miso-gpios = <&gpio1 17 0>;
				sck-gpios = <&gpio3 20 0>;
				cs-gpios = <&gpio3 17 0>;
				num-chipselects = <1>;
		
				/* clients */
				spidev_gp0: spidev_gp0@0 {
					compatible = "spidev";
					reg = <0>;      
					#address-cells = <1>;
					#size-cells = <0>;
					spi-max-frequency = <2000000>;
                                };
			};
		};
	};
};