arch/arm/boot/dts/overlays/pisound-overlay.dts

   1 /*
   2  * pisound Linux kernel module.
   3  * Copyright (C) 2016  Vilniaus Blokas UAB, http://blokas.io/pisound
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU General Public License
   7  * as published by the Free Software Foundation; version 2 of the
   8  * License.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13  * GNU General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU General Public License
  16  * along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.
  18  */
  19
  20 /dts-v1/;
  21 /plugin/;
  22
  23 #include <dt-bindings/gpio/gpio.h>
  24
  25 / {
  26         compatible = "brcm,bcm2708";
  27
  28         fragment@0 {
  29                 target = <&spi0>;
  30                 __overlay__ {
  31                         status = "okay";
  32                 };
  33         };
  34
  35         fragment@1 {
  36                 target = <&spidev0>;
  37                 __overlay__ {
  38                         status = "disabled";
  39                 };
  40         };
  41
  42         fragment@2 {
  43                 target = <&spidev1>;
  44                 __overlay__ {
  45                         status = "okay";
  46                 };
  47         };
  48
  49         fragment@3 {
  50                 target = <&spi0>;
  51                 __overlay__ {
  52                         #address-cells = <1>;
  53                         #size-cells = <0>;
  54
  55                         pisound_spi: pisound_spi@0{
  56                                 compatible = "blokaslabs,pisound-spi";
  57                                 reg = <0>;
  58                                 pinctrl-names = "default";
  59                                 pinctrl-0 = <&spi0_pins>;
  60                                 spi-max-frequency = <1000000>;
  61                         };
  62                 };
  63         };
  64
  65         fragment@4 {
  66                 target-path = "/";
  67                 __overlay__ {
  68                         pcm5102a-codec {
  69                                 #sound-dai-cells = <0>;
  70                                 compatible = "ti,pcm5102a";
  71                                 status = "okay";
  72                         };
  73                 };
  74         };
  75
  76         fragment@5 {
  77                 target = <&sound>;
  78                 __overlay__ {
  79                         compatible = "blokaslabs,pisound";
  80                         i2s-controller = <&i2s>;
  81                         status = "okay";
  82
  83                         pinctrl-0 = <&pisound_button_pins>;
  84
  85                         osr-gpios =
  86                                 <&gpio 13 GPIO_ACTIVE_HIGH>,
  87                                 <&gpio 26 GPIO_ACTIVE_HIGH>,
  88                                 <&gpio 16 GPIO_ACTIVE_HIGH>;
  89
  90                         reset-gpios =
  91                                 <&gpio 12 GPIO_ACTIVE_HIGH>,
  92                                 <&gpio 24 GPIO_ACTIVE_HIGH>;
  93
  94                         data_available-gpios = <&gpio 25 GPIO_ACTIVE_HIGH>;
  95
  96                         button-gpios = <&gpio 17 GPIO_ACTIVE_LOW>;
  97                 };
  98         };
  99
 100         fragment@6 {
 101                 target = <&gpio>;
 102                 __overlay__ {
 103                         pinctrl-names = "default";
 104                         pinctrl-0 = <&pisound_button_pins>;
 105
 106                         pisound_button_pins: pisound_button_pins {
 107                                 brcm,pins = <17>;
 108                                 brcm,function = <0>; // Input
 109                                 brcm,pull = <2>; // Pull-Up
 110                         };
 111                 };
 112         };
 113
 114         fragment@7 {
 115                 target = <&i2s>;
 116                 __overlay__ {
 117                         status = "okay";
 118                 };
 119         };
 120 };