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

   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 };