BB-BONE-CRYPTO-00A0.dts

/*
 * Copyright (C) 2014 Cryptotronix
 *
 * Cape support for the CryptoCape
 *
 * 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";

	/* identification */
	part-number = "BB-BONE-CRYPTO";
	version = "00A0";

	/* state the resources this cape uses */
	exclusive-use =
		/* the pin header uses */
		/* For Flashing the ATmega328p */
		"P9.13",	/* uart4_txd */
		"P9.11",	/* uart4_rxd */
		"P9.23",	/* gpio1_17 */
		/* As the AUTHO Input from the AES132 */
		"P8.11",	/* gpio1_13 */
		/* the hardware ip uses */
		"uart4",
		"gpio1_13",
		"gpio1_17";

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

			cryptocape_pins: pinmux_cryptocape_pins {
				pinctrl-single,pins = <
					0x044 0x17	/* gpio1_17 FAST | OUTPUT | PULLUP | MODE7 */
					0x034 0x2F	/* gpio1_13 FAST | INPUT | PULLDOWN | MODE7 */
				>;
			};

			cryptocape_uart4_pins: pinmux_cryptocape_uart4_pins {
				pinctrl-single,pins = <
					0x070 0x26	/* uart4_rxd | FAST | INPUT | MODE6 */
					0x074 0x06	/* uart4_txd | FAST | OUTPUT | MODE6 */
				>;
			};
		};
	};

	fragment@1 {
		target = <&uart5>;	/* uart4 to the BBB hardware */
		__overlay__ {
			status = "okay";
			pinctrl-names = "default";
			pinctrl-0 = <&cryptocape_uart4_pins>;
		};
	};


	fragment@2 {
		target = <&i2c2>;

		__overlay__ {
			/* needed to avoid gripping by DTC */
			#address-cells = <1>;
			#size-cells = <0>;

			/* Real Time Clock */
			ds1307@68 {
				compatible = "ds1307";
				reg = <0x68>;
			};

			/* TPM - Driver currently only available in 3.13.x */
			tpm_i2c_atmel@29 {
				compatible = "tpm_i2c_atmel";
				reg = <0x29>;
			};
		};
	};

	fragment@3 {
		target = <&ocp>;
		__overlay__ {

			cryptocape_gpio_helper {
				compatible = "gpio-of-helper";
				status = "okay";
				pinctrl-names = "default";
				pinctrl-0 = <&cryptocape_pins>;

				/* declare your gpios */
				atmega_rst {
					gpio-name = "atmega_rst";
					gpio = <&gpio2 17 0x00>;	/* gpio2 is gpio1 */
					output;
					init-high;
				};

				ataes132_auth {
					gpio-name = "test_input";
					gpio = <&gpio2 13 0x00>;	/* gpio2 is gpio1 */
					input;
					count-rising-edge;
					count-falling-edge;
				};
			};
		};
	};
};