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};
132