rockchip-kernel/arch/arm64/boot/dts/rockchip/rk3399-gru-gru.dts

/*
 * Google Gru-Gru Rev 0+ board device tree source
 *
 * Copyright 2016 Google, Inc
 *
 * This file is dual-licensed: you can use it either under the terms
 * of the GPL or the X11 license, at your option. Note that this dual
 * licensing only applies to this file, and not this project as a
 * whole.
 *
 *  a) This file is free software; you can redistribute it and/or
 *     modify it under the terms of the GNU General Public License as
 *     published by the Free Software Foundation; either version 2 of the
 *     License, or (at your option) any later version.
 *
 *     This file is distributed in the hope that it will be useful,
 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *     GNU General Public License for more details.
 *
 *  Or, alternatively,
 *
 *  b) Permission is hereby granted, free of charge, to any person
 *     obtaining a copy of this software and associated documentation
 *     files (the "Software"), to deal in the Software without
 *     restriction, including without limitation the rights to use,
 *     copy, modify, merge, publish, distribute, sublicense, and/or
 *     sell copies of the Software, and to permit persons to whom the
 *     Software is furnished to do so, subject to the following
 *     conditions:
 *
 *     The above copyright notice and this permission notice shall be
 *     included in all copies or substantial portions of the Software.
 *
 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 *     OTHER DEALINGS IN THE SOFTWARE.
 */

/dts-v1/;
#include "rk3399-gru.dtsi"

/ {
	model = "Google Gru";
	compatible = "google,gru-rev15", "google,gru-rev14",
		     "google,gru-rev13", "google,gru-rev12",
		     "google,gru-rev11", "google,gru-rev10",
		     "google,gru-rev9", "google,gru-rev8",
		     "google,gru-rev7", "google,gru-rev6",
		     "google,gru-rev5", "google,gru-rev4",
		     "google,gru-rev3", "google,gru-rev2",
		     "google,gru-rev1", "google,gru-rev0",
		     "google,gru", "rockchip,rk3399";

	// TODO: Model:
	// - pp1200_mipi_cam
	// - pp1800_mipi_cam
	// - pp2800_mipi_cam

	/* pp1800 children */

	pp1800_fp: pp1800-fp {
		compatible = "regulator-fixed";
		regulator-name = "pp1800_fp";
		pinctrl-names = "default";
		pinctrl-0 = <&fp_en>;

		enable-active-high;
		gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>;

		regulator-always-on;		// For bringup???
		regulator-boot-on;		// For bringup???

		vin-supply = <&pp1800>;
	};

	/* pp3300 children */

	pp3300_fp: pp3300-fp {
		compatible = "regulator-fixed";
		regulator-name = "pp3300_fp";
		/* NOTE: fp_en pinctrl in pp1800_fp */

		enable-active-high;
		gpio = <&gpio1 1 GPIO_ACTIVE_HIGH>;

		regulator-always-on;		// For bringup???
		regulator-boot-on;		// For bringup???

		vin-supply = <&pp3300>;
	};
};

ap_i2c_dvs: &i2c0 {
	status = "okay";

	// TODO: bus speed
	//       ...with no speed, it should just use 100kHz
	// TODO: rise / fall times?

	/* LP8556 */
	backlight@2c {
		compatible = "ti,lp8556";
		reg = <0x2c>;

		// TODO: Where do we specify AP_BL_EN???

		bl-name = "lcd-bl";
		dev-ctrl = /bits/ 8 <0x85>;  // TODO: It depends on the device.
		init-brt = /bits/ 8 <0x10>;  // TODO: What should it be?

		power-supply = <&pp3300_disp>;
	};
};

ap_i2c_cam: &i2c2 {
	status = "okay";

	// TODO: bus speed
	//       ...with no speed, it should just use 100kHz
	// TODO: rise / fall times?

	// TODO: I belive this is for the MIPI camera.
};

ap_i2c_nfc: &i2c7 {
	status = "okay";

	// TODO: bus speed
	//       ...with no speed, it should just use 100kHz
	// TODO: rise / fall times?

	// TODO: Add the proper NFC reference...
};

&spi4 {
	status = "okay";

	// TODO: more properly.  Hacky spidev for now???
	fingerprint@0 {
		compatible = "spidev";
		spi-max-frequency = <10000000>;
		reg = <0>;
	};
};

/* PINCTRL: always below everything else */

&pinctrl {
	discrete-regulators {
		fp_en: fp-en {
			rockchip,pins = <1 RK_PA1 RK_FUNC_GPIO
					 &pcfg_pull_none>;
		};
	};
};

/* DON'T PUT ANYTHING BELOW HERE.  PUT IT ABOVE PINCTRL */
/* DON'T PUT ANYTHING BELOW HERE.  PUT IT ABOVE PINCTRL */
/* DON'T PUT ANYTHING BELOW HERE.  PUT IT ABOVE PINCTRL */