1/*
  2 * Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
  3 *
  4 * This program is free software; you can redistribute it and/or modify
  5 * it under the terms of the GNU General Public License version 2 as
  6 * published by the Free Software Foundation.
  7 */
  8/dts-v1/;
  9
 10#include "am33xx.dtsi"
 11#include "am335x-bone-common.dtsi"
 12#include "am335x-bonegreen-common.dtsi"
 13#include <dt-bindings/interrupt-controller/irq.h>
 14
 15/ {
 16	model = "TI AM335x BeagleBone Green Wireless";
 17	compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
 18
 19	wlan_en_reg: fixedregulator@2 {
 20		compatible = "regulator-fixed";
 21		regulator-name = "wlan-en-regulator";
 22		regulator-min-microvolt = <1800000>;
 23		regulator-max-microvolt = <1800000>;
 24		startup-delay-us= <70000>;
 25
 26		/* WL_EN */
 27		gpio = <&gpio0 26 0>;
 28		enable-active-high;
 29	};
 30};
 31
 32&am33xx_pinmux {
 33	bt_pins: pinmux_bt_pins {
 34		pinctrl-single,pins = <
 35			AM33XX_IOPAD(0x878, PIN_OUTPUT_PULLUP | MUX_MODE7)	/* gpmc_ad12.gpio1_28 BT_EN */
 36		>;
 37	};
 38
 39	mmc3_pins: pinmux_mmc3_pins {
 40		pinctrl-single,pins = <
 41			AM33XX_IOPAD(0x830, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad12.mmc2_dat0 */
 42			AM33XX_IOPAD(0x834, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad13.mmc2_dat1 */
 43			AM33XX_IOPAD(0x838, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad14.mmc2_dat2 */
 44			AM33XX_IOPAD(0x83c, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_ad15.mmc2_dat3 */
 45			AM33XX_IOPAD(0x888, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_csn3.mmc2_cmd */
 46			AM33XX_IOPAD(0x88c, PIN_INPUT_PULLUP | MUX_MODE3)	/* gpmc_clk.mmc2_clk */
 47		>;
 48	};
 49
 50	uart3_pins: pinmux_uart3_pins {
 51		pinctrl-single,pins = <
 52			AM33XX_IOPAD(0x934, PIN_INPUT_PULLUP | MUX_MODE1)	/* gmii1_rxd3.uart3_rxd */
 53			AM33XX_IOPAD(0x938, PIN_OUTPUT_PULLDOWN | MUX_MODE1)	/* gmii1_rxd2.uart3_txd */
 54			AM33XX_IOPAD(0x948, PIN_INPUT | MUX_MODE3)		/* mdio_data.uart3_ctsn */
 55			AM33XX_IOPAD(0x94c, PIN_OUTPUT_PULLDOWN | MUX_MODE3)	/* mdio_clk.uart3_rtsn */
 56		>;
 57	};
 58
 59	wl18xx_pins: pinmux_wl18xx_pins {
 60		pinctrl-single,pins = <
 61			AM33XX_IOPAD(0x828, PIN_OUTPUT_PULLDOWN | MUX_MODE7)	/* gpmc_ad10.gpio0_26 WL_EN */
 62			AM33XX_IOPAD(0x82C, PIN_INPUT_PULLDOWN | MUX_MODE7)	/* gpmc_ad11.gpio0_27 WL_IRQ */
 63			AM33XX_IOPAD(0x87C, PIN_OUTPUT_PULLUP | MUX_MODE7)	/* gpmc_csn0.gpio1_29 LS_BUF_EN */
 64		>;
 65	};
 66};
 67
 68&mac {
 69	status = "disabled";
 70};
 71
 72&mmc3 {
 73	dmas = <&edma_xbar 12 0 1
 74		&edma_xbar 13 0 2>;
 75	dma-names = "tx", "rx";
 76	status = "okay";
 77	vmmc-supply = <&wlan_en_reg>;
 78	bus-width = <4>;
 79	non-removable;
 80	cap-power-off-card;
 81	ti,needs-special-hs-handling;
 82	keep-power-in-suspend;
 83	pinctrl-names = "default";
 84	pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
 85
 86	#address-cells = <1>;
 87	#size-cells = <0>;
 88	wlcore: wlcore@2 {
 89		compatible = "ti,wl1835";
 90		reg = <2>;
 91		interrupt-parent = <&gpio0>;
 92		interrupts = <27 IRQ_TYPE_EDGE_RISING>;
 93	};
 94};
 95
 96&uart3 {
 97	pinctrl-names = "default";
 98	pinctrl-0 = <&uart3_pins &bt_pins>;
 99	status = "okay";
100
101	bluetooth {
102		compatible = "ti,wl1835-st";
103		enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
104	};
105};
106
107&gpio1 {
108	ls_buf_en {
109		gpio-hog;
110		gpios = <29 GPIO_ACTIVE_HIGH>;
111		output-high;
112		line-name = "LS_BUF_EN";
113	};
114};
115
116/* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/
117/* in case it isn't, wilink8 ends up in one of the test modes that     */
118/* intruces various issues (elp wkaeup timeouts etc.)                  */
119/* On the BBGW this pin is routed through the level shifter (U21) that */
120/* introduces a pullup on the line and wilink8 ends up in a bad state. */
121/* use a gpio hog to force this pin low. An alternative may be adding  */
122/* an external pulldown on U21 pin 4.                                  */
123
124&gpio3 {
125	bt_aud_in {
126		gpio-hog;
127		gpios = <16 GPIO_ACTIVE_HIGH>;
128		output-low;
129		line-name = "MCASP0_AHCLKR";
130	};
131};