1/*
  2 * Copyright (C) 2013,2014 Russell King
  3 *
  4 * This file is dual-licensed: you can use it either under the terms
  5 * of the GPL or the X11 license, at your option. Note that this dual
  6 * licensing only applies to this file, and not this project as a
  7 * whole.
  8 *
  9 *  a) This file is free software; you can redistribute it and/or
 10 *     modify it under the terms of the GNU General Public License
 11 *     version 2 as published by the Free Software Foundation.
 12 *
 13 *     This file is distributed in the hope that it will be useful,
 14 *     but WITHOUT ANY WARRANTY; without even the implied warranty of
 15 *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 16 *     GNU General Public License for more details.
 17 *
 18 * Or, alternatively,
 19 *
 20 *  b) Permission is hereby granted, free of charge, to any person
 21 *     obtaining a copy of this software and associated documentation
 22 *     files (the "Software"), to deal in the Software without
 23 *     restriction, including without limitation the rights to use,
 24 *     copy, modify, merge, publish, distribute, sublicense, and/or
 25 *     sell copies of the Software, and to permit persons to whom the
 26 *     Software is furnished to do so, subject to the following
 27 *     conditions:
 28 *
 29 *     The above copyright notice and this permission notice shall be
 30 *     included in all copies or substantial portions of the Software.
 31 *
 32 *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
 33 *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
 34 *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
 35 *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
 36 *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
 37 *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
 38 *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
 39 *     OTHER DEALINGS IN THE SOFTWARE.
 40 */
 41#include <dt-bindings/gpio/gpio.h>
 42
 43/ {
 44	nvcc_sd1: regulator-nvcc-sd1 {
 45		compatible = "regulator-fixed";
 46		regulator-always-on;
 47		regulator-name = "nvcc_sd1";
 48		regulator-min-microvolt = <1800000>;
 49		regulator-max-microvolt = <1800000>;
 50		vin-supply = <&vcc_3v3>;
 51	};
 52
 53	clk_ti_wifi: ti-wifi-clock {
 54		/* This is a hack around the kernel - using "fixed clock"
 55		 * results in the "pinctrl" properties being ignored, and
 56		 * the clock not being output.  Instead, use a gated clock
 57		 * and the unrouted WL_XTAL_PU gpio.
 58		 */
 59		compatible = "gpio-gate-clock";
 60		#clock-cells = <0>;
 61		clock-frequency = <32768>;
 62		pinctrl-names = "default";
 63		pinctrl-0 = <&pinctrl_microsom_ti_clk>;
 64		enable-gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
 65	};
 66
 67	pwrseq_ti_wifi: ti-wifi-pwrseq {
 68		compatible = "mmc-pwrseq-simple";
 69		pinctrl-names = "default";
 70		pinctrl-0 = <&pinctrl_microsom_ti_wifi_en>;
 71		reset-gpios = <&gpio5 26 GPIO_ACTIVE_LOW>;
 72		post-power-on-delay-ms = <200>;
 73		clocks = <&clk_ti_wifi>;
 74		clock-names = "ext_clock";
 75	};
 76};
 77
 78&iomuxc {
 79	microsom {
 80		pinctrl_microsom_ti_bt: microsom-ti-bt {
 81			fsl,pins = <
 82				/* BT_EN_SOC */
 83				MX6QDL_PAD_CSI0_DAT14__GPIO6_IO00	0x40013070
 84			>;
 85		};
 86
 87		pinctrl_microsom_ti_clk: microsom-ti-clk {
 88			fsl,pins = <
 89				/* EXT_32K */
 90				MX6QDL_PAD_GPIO_8__XTALOSC_REF_CLK_32K	0x1b0b0
 91				/* WL_XTAL_PU (unrouted) */
 92				MX6QDL_PAD_DISP0_DAT11__GPIO5_IO05 0x40013070
 93			>;
 94		};
 95
 96		pinctrl_microsom_ti_wifi_en: microsom-ti-wifi-en {
 97			fsl,pins = <
 98				/* WLAN_EN_SOC */
 99				MX6QDL_PAD_CSI0_DAT8__GPIO5_IO26	0x40013070
100			>;
101		};
102
103		pinctrl_microsom_ti_wifi_irq: microsom-ti-wifi-irq {
104			fsl,pins = <
105				/* WLAN_IRQ */
106				MX6QDL_PAD_CSI0_DAT18__GPIO6_IO04	0x40013070
107			>;
108		};
109
110		pinctrl_microsom_uart4: microsom-uart4 {
111			fsl,pins = <
112				MX6QDL_PAD_CSI0_DAT12__UART4_TX_DATA 0x1b0b1
113				MX6QDL_PAD_CSI0_DAT13__UART4_RX_DATA 0x1b0b1
114				MX6QDL_PAD_CSI0_DAT16__UART4_RTS_B 0x1b0b1
115				MX6QDL_PAD_CSI0_DAT17__UART4_CTS_B 0x1b0b1
116			>;
117		};
118
119		pinctrl_microsom_usdhc1: microsom-usdhc1 {
120			fsl,pins = <
121				MX6QDL_PAD_SD1_CMD__SD1_CMD    0x17059
122				MX6QDL_PAD_SD1_CLK__SD1_CLK    0x10059
123				MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17059
124				MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17059
125				MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17059
126				MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17059
127			>;
128		};
129	};
130};
131
132/* UART4 - Connected to optional TI Wi-Fi/BT/FM */
133&uart4 {
134	pinctrl-names = "default";
135	pinctrl-0 = <&pinctrl_microsom_uart4>;
136	uart-has-rtscts;
137	status = "okay";
138
139	bluetooth {
140		compatible = "ti,wl1837-st";
141		clocks = <&clk_ti_wifi>;
142		clock-names = "ext_clock";
143		enable-gpios = <&gpio6 0 GPIO_ACTIVE_HIGH>;
144		pinctrl-names = "default";
145		pinctrl-0 = <&pinctrl_microsom_ti_bt>;
146	};
147};
148
149/* USDHC1 - Connected to optional TI Wi-Fi/BT/FM */
150&usdhc1 {
151	pinctrl-names = "default";
152	pinctrl-0 = <&pinctrl_microsom_usdhc1>;
153	bus-width = <4>;
154	keep-power-in-suspend;
155	mmc-pwrseq = <&pwrseq_ti_wifi>;
156	cap-power-off-card;
157	non-removable;
158	vmmc-supply = <&vcc_3v3>;
159	/* vqmmc-supply = <&nvcc_sd1>; - MMC layer doesn't like it! */
160	status = "okay";
161	#address-cells = <1>;
162	#size-cells = <0>;
163
164	wlcore@2 {
165		compatible = "ti,wl1837";
166		reg = <2>;
167		interrupts-extended = <&gpio6 4 IRQ_TYPE_LEVEL_HIGH>;
168		pinctrl-names = "default";
169		pinctrl-0 = <&pinctrl_microsom_ti_wifi_irq>;
170	};
171};