arch/arm/boot/dts/am335x-bonegreen-wireless.dts

   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: pinmux_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: pinmux_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: pinmux_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: pinmux_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 };