TT3201-001-01.dts

/*
* Copyright (C) 2013 Tower Technologies
* Written by Alessandro Zummo <a.zummo@towertech.it>
*
* 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.
*/
/dts-v1/;
/plugin/;


/ {
	compatible = "ti,beaglebone", "ti,beaglebone-black";
	part-number = "TT3201-001";
	version = "01";

	/* state the resources this cape uses */
	exclusive-use =
		/* the pin header uses */
		"P9.27",	/* spi irq: gpio3_19 */
		"P9.25",	/* spi irq: gpio3_21 */
		"P9.31",	/* spi: spi1_sclk */
		"P9.29",	/* spi: spi1_d0 */
		"P9.30",	/* spi: spi1_d1 */
		"P9.28",	/* spi: spi1_cs0 */
		"P9.42",	/* spi: spi1_cs1 */
		"P9.26",	/* dcan1: dcan1_tx */
		"P9.24",	/* dcan1: dcan1_rx */
		/* the hardware IP uses */
		"gpio3_19",
		"gpio3_21",
		"spi1",
		"dcan1";

	fragment@0 {
		target = <&am33xx_pinmux>;
		__overlay__ {

			bone_tt3201_dcan1_pins: bone_tt3201_dcan1_pins {
				pinctrl-single,pins = <
					0x180 0x02      /* uart1_rxd.d_can1_tx", OUTPUT | MODE2 */
					0x184 0x32      /* uart1_txd.d_can1_rx", INPUT_PULLUP | MODE2 */
				>;
			};

			bone_tt3201_spi1_pins: pinmux_bone_tt3201_spi1_pins {
				pinctrl-single,pins = <
					0x190 0x33      /* mcasp0_aclkx.spi1_sclk, RX_ENABLED | PULLUP | MODE3 */
					0x194 0x33      /* mcasp0_fsx.spi1_d0, RX_ENABLED | PULLUP | MODE3 */
					0x198 0x13      /* mcasp0_axr0.spi1_d1, OUTPUT_PULLUP | MODE3 */
					0x19c 0x13      /* mcasp0_ahclkr.spi1_cs0, OUTPUT_PULLUP | MODE3 */
					0x164 0x12	/* ecap0_in_pwm0_out.spi1_cs1, OUTPUT_PULLUP | MODE2 */
				>;
			};

			bone_tt3201_mcp2515_0_pins: pinmux_bone_tt3201_0_mcp2515_pins {
				pinctrl-single,pins = <
					0x1a4 0x37	/* mcasp0_fsr.gpio3_19, RX_ENABLED | PULLUP | MODE7 */
				>;
			};

			bone_tt3201_mcp2515_1_pins: pinmux_bone_tt3201_1_mcp2515_pins {
				pinctrl-single,pins = <
					0x1ac 0x37      /* mcasp0_ahclkx.gpio3_21, RX_ENABLED | PULLUP | MODE7 */
				>;
			};
		};
	};

	fragment@1 {
	      target = <&spi1>;

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

			status	  = "okay";
			pinctrl-names   = "default";
			pinctrl-0       = <&bone_tt3201_spi1_pins>;

			cs-gpios = <&gpio4 17 0>, <&gpio1 7 0>;

			mcp2515@0 {

				compatible = "microchip,mcp2515";
				reg = <1>; /* cs1 */
				mode = <0>;

				spi-max-frequency = <10000000>;

				pinctrl-names = "default";
				pinctrl-0 = <&bone_tt3201_mcp2515_1_pins>;

				interrupt-parent = <&gpio4>;
				interrupts = <21>;

				mcp251x,oscillator-frequency = <16000000>;
				mcp251x,irq-gpios = <&gpio4 21 0>;
				mcp251x,stay-awake = <1>;
			};

			mcp2515@1 {

				compatible = "microchip,mcp2515";
				reg = <0>; /* cs0 */
				mode = <0>;

				spi-max-frequency = <10000000>;

				pinctrl-names = "default";
				pinctrl-0 = <&bone_tt3201_mcp2515_0_pins>;

				interrupt-parent = <&gpio4>;
				interrupts = <19>;

				mcp251x,oscillator-frequency = <16000000>;
				mcp251x,irq-gpios = <&gpio4 19 0>;
				mcp251x,stay-awake = <1>;
				mcp251x,enable-clkout = <1>;
			};
		};
	};

	fragment@2 {
		target = <&dcan1>;
		__overlay__ {
			status = "okay";
			pinctrl-names = "default";
			pinctrl-0 = <&bone_tt3201_dcan1_pins>;
		};
	};
};