PB-SPI0-ETH-WIZ-CLICK.dts

/*
 * Copyright (C) 2017 Robert Nelson <robertcnelson@gmail.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.
 *
 * https://www.mikroe.com/eth-wiz-click
 * https://download.mikroe.com/documents/add-on-boards/click/eth-wiz/eth-wiz-click-manual-v100.pdf
 */

/dts-v1/;
/plugin/;

#include <dt-bindings/gpio/gpio.h>
#include <dt-bindings/pinctrl/am33xx.h>
#include <dt-bindings/interrupt-controller/irq.h>

/ {
	/*
	 * Helper to show loaded overlays under: /proc/device-tree/chosen/overlays/
	 */
	fragment@0 {
		target-path="/";
		__overlay__ {

			chosen {
				overlays {
					PB-SPI0-ETH-WIZ-CLICK = __TIMESTAMP__;
				};
			};
		};
	};

	/*
	 * Free up the pins used by the cape from the pinmux helpers.
	 */
	fragment@1 {
		target = <&ocp>;
		__overlay__ {
			P1_04_pinmux { status = "disabled"; };
			P1_06_pinmux { status = "disabled"; };
			P1_08_pinmux { status = "disabled"; };
			P1_10_pinmux { status = "disabled"; };
			P1_12_pinmux { status = "disabled"; };
			P2_03_pinmux { status = "disabled"; };
		};
	};

	fragment@2 {
		target = <&am33xx_pinmux>;
		__overlay__ {
			w5500_pins: pinmux_w5500_pins {
				pinctrl-single,pins = <
					AM33XX_IOPAD(0x0824, PIN_INPUT | MUX_MODE7 ) /* (T10) gpmc_ad9.gpio0[23] INT */
					AM33XX_IOPAD(0x08ec, PIN_INPUT | MUX_MODE7 ) /* (R6) lcd_ac_bias_en.gpio2[25] RESET */
				>;
			};

			pb_spi0_pins: pinmux_pb_spi0_pins {
				pinctrl-single,pins = <
					AM33XX_IOPAD(0x0950, PIN_INPUT | MUX_MODE0 ) /* (A17) spi0_sclk.spi0_sclk */
					AM33XX_IOPAD(0x0954, PIN_INPUT | MUX_MODE0 ) /* (B17) spi0_d0.spi0_d0 */
					AM33XX_IOPAD(0x0958, PIN_INPUT | MUX_MODE0 ) /* (B16) spi0_d1.spi0_d1 */
					AM33XX_IOPAD(0x095c, PIN_INPUT | MUX_MODE0 ) /* (A16) spi0_cs0.spi0_cs0 */
				>;
			};
		};
	};

	fragment@3 {
		target = <&spi0>;
		__overlay__ {
			status = "okay";
			pinctrl-names = "default";
			pinctrl-0 = <&pb_spi0_pins>;

			channel@0{ status = "disabled"; };
			channel@1{ status = "disabled"; };
		};
	};

	fragment@4 {
		target = <&spi0>;
		__overlay__ {
			#address-cells = <1>;
			#size-cells = <0>;

			w5500: ethernet@0 {
				compatible = "wiznet,w5500";
				pinctrl-names = "default";
				pinctrl-0 = <&w5500_pins>;
				reg = <0x0>;
				interrupt-parent = <&gpio0>;
				interrupts = <23 IRQ_TYPE_EDGE_FALLING>;
				spi-max-frequency = <24000000>;
				local-mac-address = [ 00 00 00 00 00 00 ];
			};
		};
	};
};