linux/arch/arm/boot/dts/imx6qdl-sr-som-ti.dtsi

/*
 * Copyright (C) 2013,2014 Russell King
 *
 * 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
 *     version 2 as published by the Free Software Foundation.
 *
 *     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.
 */
#include <dt-bindings/gpio/gpio.h>

/ {
	nvcc_sd1: regulator-nvcc-sd1 {
		compatible = "regulator-fixed";
		regulator-always-on;
		regulator-name = "nvcc_sd1";
		regulator-min-microvolt = <1800000>;
		regulator-max-microvolt = <1800000>;
		vin-supply = <&vcc_3v3>;
	};

	clk_ti_wifi: ti-wifi-clock {
		/* This is a hack around the kernel - using "fixed clock"
		 * results in the "pinctrl" properties being ignored, and
		 * the clock not being output.  Instead, use a gated clock
		 * and the unrouted WL_XTAL_PU gpio.
		 */
		compatible = "gpio-gate-clock";
		#clock-cells = <0>;
		clock-frequency = <32768>;
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_microsom_ti_clk>;
		enable-gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
	};

	pwrseq_ti_wifi: ti-wifi-pwrseq {
		compatible = "mmc-pwrseq-simple";
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_microsom_ti_wifi_en>;
		reset-gpios = <&gpio5 26 GPIO_ACTIVE_LOW>;
		post-power-on-delay-ms = <200>;
		clocks = <&clk_ti_wifi>;
		clock-names = "ext_clock";
	};
};

&iomuxc {
	microsom {
		pinctrl_microsom_ti_bt: microsom-ti-bt {
			fsl,pins = <
				/* BT_EN_SOC */
				MX6QDL_PAD_CSI0_DAT14__GPIO6_IO00	0x40013070
			>;
		};

		pinctrl_microsom_ti_clk: microsom-ti-clk {
			fsl,pins = <
				/* EXT_32K */
				MX6QDL_PAD_GPIO_8__XTALOSC_REF_CLK_32K	0x1b0b0
				/* WL_XTAL_PU (unrouted) */
				MX6QDL_PAD_DISP0_DAT11__GPIO5_IO05 0x40013070
			>;
		};

		pinctrl_microsom_ti_wifi_en: microsom-ti-wifi-en {
			fsl,pins = <
				/* WLAN_EN_SOC */
				MX6QDL_PAD_CSI0_DAT8__GPIO5_IO26	0x40013070
			>;
		};

		pinctrl_microsom_ti_wifi_irq: microsom-ti-wifi-irq {
			fsl,pins = <
				/* WLAN_IRQ */
				MX6QDL_PAD_CSI0_DAT18__GPIO6_IO04	0x40013070
			>;
		};

		pinctrl_microsom_uart4: microsom-uart4 {
			fsl,pins = <
				MX6QDL_PAD_CSI0_DAT12__UART4_TX_DATA 0x1b0b1
				MX6QDL_PAD_CSI0_DAT13__UART4_RX_DATA 0x1b0b1
				MX6QDL_PAD_CSI0_DAT16__UART4_RTS_B 0x1b0b1
				MX6QDL_PAD_CSI0_DAT17__UART4_CTS_B 0x1b0b1
			>;
		};

		pinctrl_microsom_usdhc1: microsom-usdhc1 {
			fsl,pins = <
				MX6QDL_PAD_SD1_CMD__SD1_CMD    0x17059
				MX6QDL_PAD_SD1_CLK__SD1_CLK    0x10059
				MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17059
				MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17059
				MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17059
				MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17059
			>;
		};
	};
};

/* UART4 - Connected to optional TI Wi-Fi/BT/FM */
&uart4 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_microsom_uart4>;
	uart-has-rtscts;
	status = "okay";

	bluetooth {
		compatible = "ti,wl1837-st";
		clocks = <&clk_ti_wifi>;
		clock-names = "ext_clock";
		enable-gpios = <&gpio6 0 GPIO_ACTIVE_HIGH>;
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_microsom_ti_bt>;
	};
};

/* USDHC1 - Connected to optional TI Wi-Fi/BT/FM */
&usdhc1 {
	pinctrl-names = "default";
	pinctrl-0 = <&pinctrl_microsom_usdhc1>;
	bus-width = <4>;
	keep-power-in-suspend;
	mmc-pwrseq = <&pwrseq_ti_wifi>;
	non-removable;
	vmmc-supply = <&vcc_3v3>;
	/* vqmmc-supply = <&nvcc_sd1>; - MMC layer doesn't like it! */
	status = "okay";
	#address-cells = <1>;
	#size-cells = <0>;

	wlcore@2 {
		compatible = "ti,wl1837";
		reg = <2>;
		interrupts-extended = <&gpio6 4 IRQ_TYPE_LEVEL_HIGH>;
		pinctrl-names = "default";
		pinctrl-0 = <&pinctrl_microsom_ti_wifi_irq>;
	};
};