1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
4 */
5 /dts-v1/;
6
7 #include "am33xx.dtsi"
8 #include "am335x-bone-common.dtsi"
9 #include "am335x-bonegreen-common.dtsi"
10 #include <dt-bindings/interrupt-controller/irq.h>
11
12 / {
13 model = "TI AM335x BeagleBone Green Wireless";
14 compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
15
16 wlan_en_reg: fixedregulator@2 {
17 compatible = "regulator-fixed";
18 regulator-name = "wlan-en-regulator";
19 regulator-min-microvolt = <1800000>;
20 regulator-max-microvolt = <1800000>;
21 startup-delay-us = <70000>;
22
23 /* WL_EN */
24 gpio = <&gpio0 26 0>;
25 enable-active-high;
26 };
27 };
28
29 &am33xx_pinmux {
30 bt_pins: bt-pins {
31 pinctrl-single,pins = <
32 AM33XX_PADCONF(AM335X_PIN_GPMC_BEN1, PIN_OUTPUT_PULLUP, MUX_MODE7) /* gpmc_ad12.gpio1_28 BT_EN */
33 >;
34 };
35
36 mmc3_pins: mmc3-pins {
37 pinctrl-single,pins = <
38 AM33XX_PADCONF(AM335X_PIN_GPMC_AD12, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad12.mmc2_dat0 */
39 AM33XX_PADCONF(AM335X_PIN_GPMC_AD13, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad13.mmc2_dat1 */
40 AM33XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad14.mmc2_dat2 */
41 AM33XX_PADCONF(AM335X_PIN_GPMC_AD15, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad15.mmc2_dat3 */
42 AM33XX_PADCONF(AM335X_PIN_GPMC_CSN3, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_csn3.mmc2_cmd */
43 AM33XX_PADCONF(AM335X_PIN_GPMC_CLK, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_clk.mmc2_clk */
44 >;
45 };
46
47 uart3_pins: uart3-pins {
48 pinctrl-single,pins = <
49 AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLUP, MUX_MODE1) /* gmii1_rxd3.uart3_rxd */
50 AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_OUTPUT_PULLDOWN, MUX_MODE1) /* gmii1_rxd2.uart3_txd */
51 AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT, MUX_MODE3) /* mdio_data.uart3_ctsn */
52 AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLDOWN, MUX_MODE3) /* mdio_clk.uart3_rtsn */
53 >;
54 };
55
56 wl18xx_pins: wl18xx-pins {
57 pinctrl-single,pins = <
58 AM33XX_PADCONF(AM335X_PIN_GPMC_AD10, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_ad10.gpio0_26 WL_EN */
59 AM33XX_PADCONF(AM335X_PIN_GPMC_AD11, PIN_INPUT_PULLDOWN, MUX_MODE7) /* gpmc_ad11.gpio0_27 WL_IRQ */
60 AM33XX_PADCONF(AM335X_PIN_GPMC_CSN0, PIN_OUTPUT_PULLUP, MUX_MODE7) /* gpmc_csn0.gpio1_29 LS_BUF_EN */
61 >;
62 };
63 };
64
65 &mac_sw {
66 status = "disabled";
67 };
68
69 &mmc3 {
70 dmas = <&edma_xbar 12 0 1
71 &edma_xbar 13 0 2>;
72 dma-names = "tx", "rx";
73 status = "okay";
74 vmmc-supply = <&wlan_en_reg>;
75 bus-width = <4>;
76 non-removable;
77 cap-power-off-card;
78 keep-power-in-suspend;
79 pinctrl-names = "default";
80 pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
81
82 #address-cells = <1>;
83 #size-cells = <0>;
84 wlcore: wlcore@2 {
85 compatible = "ti,wl1835";
86 reg = <2>;
87 interrupt-parent = <&gpio0>;
88 interrupts = <27 IRQ_TYPE_EDGE_RISING>;
89 };
90 };
91
92 &uart3 {
93 pinctrl-names = "default";
94 pinctrl-0 = <&uart3_pins &bt_pins>;
95 status = "okay";
96
97 bluetooth {
98 compatible = "ti,wl1835-st";
99 enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
100 };
101 };
102
103 &gpio1 {
104 ls-buf-en-hog {
105 gpio-hog;
106 gpios = <29 GPIO_ACTIVE_HIGH>;
107 output-high;
108 line-name = "LS_BUF_EN";
109 };
110 };
111
112 /* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/
113 /* in case it isn't, wilink8 ends up in one of the test modes that */
114 /* intruces various issues (elp wkaeup timeouts etc.) */
115 /* On the BBGW this pin is routed through the level shifter (U21) that */
116 /* introduces a pullup on the line and wilink8 ends up in a bad state. */
117 /* use a gpio hog to force this pin low. An alternative may be adding */
118 /* an external pulldown on U21 pin 4. */
119
120 &gpio3 {
121 bt-aud-in-hog {
122 gpio-hog;
123 gpios = <16 GPIO_ACTIVE_HIGH>;
124 output-low;
125 line-name = "MCASP0_AHCLKR";
126 };
127 };
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