arch/arm/boot/dts/imx6qdl-sr-som-ti.dtsi

   1 /*
   2  * Copyright (C) 2013,2014 Russell King
   3  *
   4  * This file is dual-licensed: you can use it either under the terms
   5  * of the GPL or the X11 license, at your option. Note that this dual
   6  * licensing only applies to this file, and not this project as a
   7  * whole.
   8  *
   9  *  a) This file is free software; you can redistribute it and/or
  10  *     modify it under the terms of the GNU General Public License
  11  *     version 2 as published by the Free Software Foundation.
  12  *
  13  *     This file is distributed in the hope that it will be useful,
  14  *     but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  *     MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  *     GNU General Public License for more details.
  17  *
  18  * Or, alternatively,
  19  *
  20  *  b) Permission is hereby granted, free of charge, to any person
  21  *     obtaining a copy of this software and associated documentation
  22  *     files (the "Software"), to deal in the Software without
  23  *     restriction, including without limitation the rights to use,
  24  *     copy, modify, merge, publish, distribute, sublicense, and/or
  25  *     sell copies of the Software, and to permit persons to whom the
  26  *     Software is furnished to do so, subject to the following
  27  *     conditions:
  28  *
  29  *     The above copyright notice and this permission notice shall be
  30  *     included in all copies or substantial portions of the Software.
  31  *
  32  *     THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  33  *     EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  34  *     OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  35  *     NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  36  *     HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  37  *     WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  38  *     FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  39  *     OTHER DEALINGS IN THE SOFTWARE.
  40  */
  41 #include <dt-bindings/gpio/gpio.h>
  42
  43 / {
  44         nvcc_sd1: regulator-nvcc-sd1 {
  45                 compatible = "regulator-fixed";
  46                 regulator-always-on;
  47                 regulator-name = "nvcc_sd1";
  48                 regulator-min-microvolt = <1800000>;
  49                 regulator-max-microvolt = <1800000>;
  50                 vin-supply = <&vcc_3v3>;
  51         };
  52
  53         clk_ti_wifi: ti-wifi-clock {
  54                 /* This is a hack around the kernel - using "fixed clock"
  55                  * results in the "pinctrl" properties being ignored, and
  56                  * the clock not being output.  Instead, use a gated clock
  57                  * and the unrouted WL_XTAL_PU gpio.
  58                  */
  59                 compatible = "gpio-gate-clock";
  60                 #clock-cells = <0>;
  61                 clock-frequency = <32768>;
  62                 pinctrl-names = "default";
  63                 pinctrl-0 = <&pinctrl_microsom_ti_clk>;
  64                 enable-gpios = <&gpio5 5 GPIO_ACTIVE_HIGH>;
  65         };
  66
  67         pwrseq_ti_wifi: ti-wifi-pwrseq {
  68                 compatible = "mmc-pwrseq-simple";
  69                 pinctrl-names = "default";
  70                 pinctrl-0 = <&pinctrl_microsom_ti_wifi_en>;
  71                 reset-gpios = <&gpio5 26 GPIO_ACTIVE_LOW>;
  72                 post-power-on-delay-ms = <200>;
  73                 clocks = <&clk_ti_wifi>;
  74                 clock-names = "ext_clock";
  75         };
  76 };
  77
  78 &iomuxc {
  79         microsom {
  80                 pinctrl_microsom_ti_bt: microsom-ti-bt {
  81                         fsl,pins = <
  82                                 /* BT_EN_SOC */
  83                                 MX6QDL_PAD_CSI0_DAT14__GPIO6_IO00       0x40013070
  84                         >;
  85                 };
  86
  87                 pinctrl_microsom_ti_clk: microsom-ti-clk {
  88                         fsl,pins = <
  89                                 /* EXT_32K */
  90                                 MX6QDL_PAD_GPIO_8__XTALOSC_REF_CLK_32K  0x1b0b0
  91                                 /* WL_XTAL_PU (unrouted) */
  92                                 MX6QDL_PAD_DISP0_DAT11__GPIO5_IO05 0x40013070
  93                         >;
  94                 };
  95
  96                 pinctrl_microsom_ti_wifi_en: microsom-ti-wifi-en {
  97                         fsl,pins = <
  98                                 /* WLAN_EN_SOC */
  99                                 MX6QDL_PAD_CSI0_DAT8__GPIO5_IO26        0x40013070
 100                         >;
 101                 };
 102
 103                 pinctrl_microsom_ti_wifi_irq: microsom-ti-wifi-irq {
 104                         fsl,pins = <
 105                                 /* WLAN_IRQ */
 106                                 MX6QDL_PAD_CSI0_DAT18__GPIO6_IO04       0x40013070
 107                         >;
 108                 };
 109
 110                 pinctrl_microsom_uart4: microsom-uart4 {
 111                         fsl,pins = <
 112                                 MX6QDL_PAD_CSI0_DAT12__UART4_TX_DATA 0x1b0b1
 113                                 MX6QDL_PAD_CSI0_DAT13__UART4_RX_DATA 0x1b0b1
 114                                 MX6QDL_PAD_CSI0_DAT16__UART4_RTS_B 0x1b0b1
 115                                 MX6QDL_PAD_CSI0_DAT17__UART4_CTS_B 0x1b0b1
 116                         >;
 117                 };
 118
 119                 pinctrl_microsom_usdhc1: microsom-usdhc1 {
 120                         fsl,pins = <
 121                                 MX6QDL_PAD_SD1_CMD__SD1_CMD    0x17059
 122                                 MX6QDL_PAD_SD1_CLK__SD1_CLK    0x10059
 123                                 MX6QDL_PAD_SD1_DAT0__SD1_DATA0 0x17059
 124                                 MX6QDL_PAD_SD1_DAT1__SD1_DATA1 0x17059
 125                                 MX6QDL_PAD_SD1_DAT2__SD1_DATA2 0x17059
 126                                 MX6QDL_PAD_SD1_DAT3__SD1_DATA3 0x17059
 127                         >;
 128                 };
 129         };
 130 };
 131
 132 /* UART4 - Connected to optional TI Wi-Fi/BT/FM */
 133 &uart4 {
 134         pinctrl-names = "default";
 135         pinctrl-0 = <&pinctrl_microsom_uart4>;
 136         uart-has-rtscts;
 137         status = "okay";
 138
 139         bluetooth {
 140                 compatible = "ti,wl1837-st";
 141                 clocks = <&clk_ti_wifi>;
 142                 clock-names = "ext_clock";
 143                 enable-gpios = <&gpio6 0 GPIO_ACTIVE_HIGH>;
 144                 pinctrl-names = "default";
 145                 pinctrl-0 = <&pinctrl_microsom_ti_bt>;
 146         };
 147 };
 148
 149 /* USDHC1 - Connected to optional TI Wi-Fi/BT/FM */
 150 &usdhc1 {
 151         pinctrl-names = "default";
 152         pinctrl-0 = <&pinctrl_microsom_usdhc1>;
 153         bus-width = <4>;
 154         keep-power-in-suspend;
 155         mmc-pwrseq = <&pwrseq_ti_wifi>;
 156         non-removable;
 157         vmmc-supply = <&vcc_3v3>;
 158         /* vqmmc-supply = <&nvcc_sd1>; - MMC layer doesn't like it! */
 159         status = "okay";
 160         #address-cells = <1>;
 161         #size-cells = <0>;
 162
 163         wlcore@2 {
 164                 compatible = "ti,wl1837";
 165                 reg = <2>;
 166                 interrupts-extended = <&gpio6 4 IRQ_TYPE_LEVEL_HIGH>;
 167                 pinctrl-names = "default";
 168                 pinctrl-0 = <&pinctrl_microsom_ti_wifi_irq>;
 169         };
 170 };