0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003 * Copyright (C) 2012 Texas Instruments Incorporated - https://www.ti.com/
0004 */
0005 /dts-v1/;
0006
0007 #include "am33xx.dtsi"
0008 #include "am335x-bone-common.dtsi"
0009 #include "am335x-bonegreen-common.dtsi"
0010 #include <dt-bindings/interrupt-controller/irq.h>
0011
0012 / {
0013 model = "TI AM335x BeagleBone Green Wireless";
0014 compatible = "ti,am335x-bone-green-wireless", "ti,am335x-bone-green", "ti,am335x-bone-black", "ti,am335x-bone", "ti,am33xx";
0015
0016 wlan_en_reg: fixedregulator@2 {
0017 compatible = "regulator-fixed";
0018 regulator-name = "wlan-en-regulator";
0019 regulator-min-microvolt = <1800000>;
0020 regulator-max-microvolt = <1800000>;
0021 startup-delay-us = <70000>;
0022
0023 /* WL_EN */
0024 gpio = <&gpio0 26 0>;
0025 enable-active-high;
0026 };
0027 };
0028
0029 &am33xx_pinmux {
0030 bt_pins: pinmux_bt_pins {
0031 pinctrl-single,pins = <
0032 AM33XX_PADCONF(AM335X_PIN_GPMC_BEN1, PIN_OUTPUT_PULLUP, MUX_MODE7) /* gpmc_ad12.gpio1_28 BT_EN */
0033 >;
0034 };
0035
0036 mmc3_pins: pinmux_mmc3_pins {
0037 pinctrl-single,pins = <
0038 AM33XX_PADCONF(AM335X_PIN_GPMC_AD12, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad12.mmc2_dat0 */
0039 AM33XX_PADCONF(AM335X_PIN_GPMC_AD13, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad13.mmc2_dat1 */
0040 AM33XX_PADCONF(AM335X_PIN_GPMC_AD14, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad14.mmc2_dat2 */
0041 AM33XX_PADCONF(AM335X_PIN_GPMC_AD15, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_ad15.mmc2_dat3 */
0042 AM33XX_PADCONF(AM335X_PIN_GPMC_CSN3, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_csn3.mmc2_cmd */
0043 AM33XX_PADCONF(AM335X_PIN_GPMC_CLK, PIN_INPUT_PULLUP, MUX_MODE3) /* gpmc_clk.mmc2_clk */
0044 >;
0045 };
0046
0047 uart3_pins: pinmux_uart3_pins {
0048 pinctrl-single,pins = <
0049 AM33XX_PADCONF(AM335X_PIN_MII1_RXD3, PIN_INPUT_PULLUP, MUX_MODE1) /* gmii1_rxd3.uart3_rxd */
0050 AM33XX_PADCONF(AM335X_PIN_MII1_RXD2, PIN_OUTPUT_PULLDOWN, MUX_MODE1) /* gmii1_rxd2.uart3_txd */
0051 AM33XX_PADCONF(AM335X_PIN_MDIO, PIN_INPUT, MUX_MODE3) /* mdio_data.uart3_ctsn */
0052 AM33XX_PADCONF(AM335X_PIN_MDC, PIN_OUTPUT_PULLDOWN, MUX_MODE3) /* mdio_clk.uart3_rtsn */
0053 >;
0054 };
0055
0056 wl18xx_pins: pinmux_wl18xx_pins {
0057 pinctrl-single,pins = <
0058 AM33XX_PADCONF(AM335X_PIN_GPMC_AD10, PIN_OUTPUT_PULLDOWN, MUX_MODE7) /* gpmc_ad10.gpio0_26 WL_EN */
0059 AM33XX_PADCONF(AM335X_PIN_GPMC_AD11, PIN_INPUT_PULLDOWN, MUX_MODE7) /* gpmc_ad11.gpio0_27 WL_IRQ */
0060 AM33XX_PADCONF(AM335X_PIN_GPMC_CSN0, PIN_OUTPUT_PULLUP, MUX_MODE7) /* gpmc_csn0.gpio1_29 LS_BUF_EN */
0061 >;
0062 };
0063 };
0064
0065 &mac_sw {
0066 status = "disabled";
0067 };
0068
0069 &mmc3 {
0070 dmas = <&edma_xbar 12 0 1
0071 &edma_xbar 13 0 2>;
0072 dma-names = "tx", "rx";
0073 status = "okay";
0074 vmmc-supply = <&wlan_en_reg>;
0075 bus-width = <4>;
0076 non-removable;
0077 cap-power-off-card;
0078 keep-power-in-suspend;
0079 pinctrl-names = "default";
0080 pinctrl-0 = <&mmc3_pins &wl18xx_pins>;
0081
0082 #address-cells = <1>;
0083 #size-cells = <0>;
0084 wlcore: wlcore@2 {
0085 compatible = "ti,wl1835";
0086 reg = <2>;
0087 interrupt-parent = <&gpio0>;
0088 interrupts = <27 IRQ_TYPE_EDGE_RISING>;
0089 };
0090 };
0091
0092 &uart3 {
0093 pinctrl-names = "default";
0094 pinctrl-0 = <&uart3_pins &bt_pins>;
0095 status = "okay";
0096
0097 bluetooth {
0098 compatible = "ti,wl1835-st";
0099 enable-gpios = <&gpio1 28 GPIO_ACTIVE_HIGH>;
0100 };
0101 };
0102
0103 &gpio1 {
0104 ls-buf-en-hog {
0105 gpio-hog;
0106 gpios = <29 GPIO_ACTIVE_HIGH>;
0107 output-high;
0108 line-name = "LS_BUF_EN";
0109 };
0110 };
0111
0112 /* BT_AUD_OUT from wl1835 has to be pulled low when WL_EN is activated.*/
0113 /* in case it isn't, wilink8 ends up in one of the test modes that */
0114 /* intruces various issues (elp wkaeup timeouts etc.) */
0115 /* On the BBGW this pin is routed through the level shifter (U21) that */
0116 /* introduces a pullup on the line and wilink8 ends up in a bad state. */
0117 /* use a gpio hog to force this pin low. An alternative may be adding */
0118 /* an external pulldown on U21 pin 4. */
0119
0120 &gpio3 {
0121 bt-aud-in-hog {
0122 gpio-hog;
0123 gpios = <16 GPIO_ACTIVE_HIGH>;
0124 output-low;
0125 line-name = "MCASP0_AHCLKR";
0126 };
0127 };
