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

   1 #include <dt-bindings/clock/bcm2835.h>
   2 /*
   3  * Device tree overlay for the Universal Digital Radio Controller
   4  */
   5
   6 /dts-v1/;
   7 /plugin/;
   8
   9 / {
  10     compatible = "brcm,bcm2835";
  11     fragment@0 {
  12         target = <&i2s>;
  13         __overlay__ {
  14             clocks = <&clocks BCM2835_CLOCK_PCM>;
  15             clock-names = "pcm";
  16             status = "okay";
  17         };
  18     };
  19
  20     fragment@1 {
  21         target-path = "/";
  22         __overlay__ {
  23             regulators {
  24                 compatible = "simple-bus";
  25                 #address-cells = <1>;
  26                 #size-cells = <0>;
  27
  28                 udrc0_ldoin: udrc0_ldoin {
  29                     compatible = "regulator-fixed";
  30                     regulator-name = "ldoin";
  31                     regulator-min-microvolt = <3300000>;
  32                     regulator-max-microvolt = <3300000>;
  33                     regulator-always-on;
  34                 };
  35             };
  36         };
  37     };
  38
  39     fragment@2 {
  40         target = <&i2c1>;
  41         __overlay__ {
  42             #address-cells = <1>;
  43             #size-cells = <0>;
  44             status = "okay";
  45             clocks = <&clocks BCM2835_CLOCK_VPU>;
  46             clock-frequency = <400000>;
  47
  48             tlv320aic32x4: tlv320aic32x4@18 {
  49                 compatible = "ti,tlv320aic32x4";
  50                 #sound-dai-cells = <0>;
  51                 reg = <0x18>;
  52                 status = "okay";
  53
  54                 clocks = <&clocks BCM2835_CLOCK_GP0>;
  55                 clock-names = "mclk";
  56                 assigned-clocks = <&clocks BCM2835_CLOCK_GP0>;
  57                 assigned-clock-rates = <25000000>;
  58
  59                 pinctrl-names = "default";
  60                 pinctrl-0 = <&gpclk0_pin &aic3204_reset>;
  61
  62                 reset-gpios = <&gpio 13 0>;
  63
  64                 iov-supply = <&udrc0_ldoin>;
  65                 ldoin-supply = <&udrc0_ldoin>;
  66             };
  67         };
  68     };
  69
  70     fragment@3 {
  71         target = <&sound>;
  72         snd: __overlay__ {
  73             compatible = "simple-audio-card";
  74             i2s-controller = <&i2s>;
  75             status = "okay";
  76
  77             simple-audio-card,name = "udrc";
  78             simple-audio-card,format = "i2s";
  79
  80             simple-audio-card,bitclock-master = <&dailink0_master>;
  81             simple-audio-card,frame-master = <&dailink0_master>;
  82
  83             simple-audio-card,widgets =
  84                 "Line", "Line In",
  85                 "Line", "Line Out";
  86
  87             simple-audio-card,routing =
  88                 "IN1_R", "Line In",
  89                 "IN1_L", "Line In",
  90                 "CM_L", "Line In",
  91                 "CM_R", "Line In",
  92                 "Line Out", "LOR",
  93                 "Line Out", "LOL";
  94
  95             dailink0_master: simple-audio-card,cpu {
  96                 sound-dai = <&i2s>;
  97             };
  98
  99             simple-audio-card,codec {
 100                 sound-dai = <&tlv320aic32x4>;
 101             };
 102         };
 103     };
 104
 105     fragment@4 {
 106         target = <&gpio>;
 107         __overlay__ {
 108             gpclk0_pin: gpclk0_pin {
 109                 brcm,pins = <4>;
 110                 brcm,function = <4>;
 111             };
 112
 113             aic3204_reset: aic3204_reset {
 114                 brcm,pins = <13>;
 115                 brcm,function = <1>;
 116                 brcm,pull = <1>;
 117             };
 118
 119             aic3204_gpio: aic3204_gpio {
 120                 brcm,pins = <26>;
 121             };
 122         };
 123     };
 124
 125     __overrides__ {
 126         alsaname = <&snd>, "simple-audio-card,name";
 127     };
 128 };