target/linux/brcm2708/patches-4.14/950-0235-overlays-Add-overlay-for-PiBell-soundcard.patch

   1 From 36a2db8647b19b0c8576a10ab787b14098049f9b Mon Sep 17 00:00:00 2001
   2 From: Phil Elwell <phil@raspberrypi.org>
   3 Date: Wed, 28 Feb 2018 21:29:42 +0000
   4 Subject: [PATCH 235/454] overlays: Add overlay for PiBell soundcard
   5
   6 This overlay is presented as another example of using the simple card
   7 driver.
   8
   9 See: https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=99784&p=1279490#p1278971
  10
  11 Signed-off-by: Phil Elwell <phil@raspberrypi.org>
  12 ---
  13  arch/arm/boot/dts/overlays/Makefile           |  1 +
  14  arch/arm/boot/dts/overlays/README             |  7 ++
  15  arch/arm/boot/dts/overlays/pibell-overlay.dts | 81 +++++++++++++++++++
  16  3 files changed, 89 insertions(+)
  17  create mode 100644 arch/arm/boot/dts/overlays/pibell-overlay.dts
  18
  19 --- a/arch/arm/boot/dts/overlays/Makefile
  20 +++ b/arch/arm/boot/dts/overlays/Makefile
  21 @@ -76,6 +76,7 @@ dtbo-$(CONFIG_ARCH_BCM2835) += \
  22         pi3-disable-bt.dtbo \
  23         pi3-disable-wifi.dtbo \
  24         pi3-miniuart-bt.dtbo \
  25 +       pibell.dtbo \
  26         piscreen.dtbo \
  27         piscreen2r.dtbo \
  28         pisound.dtbo \
  29 --- a/arch/arm/boot/dts/overlays/README
  30 +++ b/arch/arm/boot/dts/overlays/README
  31 @@ -1182,6 +1182,13 @@ Load:   dtoverlay=pi3-miniuart-bt
  32  Params: <None>
  33
  34
  35 +Name:   pibell
  36 +Info:   Configures the pibell audio card.
  37 +Load:   dtoverlay=pibell,<param>=<val>
  38 +Params: alsaname                Set the name as it appears in ALSA (default
  39 +                                "PiBell")
  40 +
  41 +
  42  Name:   piscreen
  43  Info:   PiScreen display by OzzMaker.com
  44  Load:   dtoverlay=piscreen,<param>=<val>
  45 --- /dev/null
  46 +++ b/arch/arm/boot/dts/overlays/pibell-overlay.dts
  47 @@ -0,0 +1,81 @@
  48 +/dts-v1/;
  49 +/plugin/;
  50 +
  51 +/ {
  52 +    compatible = "brcm,bcm2708";
  53 +
  54 +    fragment@0 {
  55 +        target-path = "/";
  56 +        __overlay__ {
  57 +            codec_out: spdif-transmitter {
  58 +                #address-cells = <0>;
  59 +                #size-cells = <0>;
  60 +                #sound-dai-cells = <0>;
  61 +                compatible = "linux,spdif-dit";
  62 +                status = "okay";
  63 +            };
  64 +
  65 +            codec_in: card-codec {
  66 +                #sound-dai-cells = <0>;
  67 +                compatible = "invensense,ics43432";
  68 +                status = "okay";
  69 +            };
  70 +        };
  71 +    };
  72 +
  73 +    fragment@1 {
  74 +        target = <&i2s>;
  75 +        __overlay__ {
  76 +            #sound-dai-cells = <0>;
  77 +            status = "okay";
  78 +        };
  79 +    };
  80 +
  81 +    fragment@2 {
  82 +        target = <&sound>;
  83 +        snd: __overlay__ {
  84 +            compatible = "simple-audio-card";
  85 +            simple-audio-card,name = "PiBell";
  86 +
  87 +            status="okay";
  88 +
  89 +            capture_link: simple-audio-card,dai-link@0 {
  90 +                format = "i2s";
  91 +
  92 +                r_cpu_dai: cpu {
  93 +                    sound-dai = <&i2s>;
  94 +
  95 +/* example TDM slot configuration
  96 +                    dai-tdm-slot-num = <2>;
  97 +                    dai-tdm-slot-width = <32>;
  98 +*/
  99 +                };
 100 +
 101 +                r_codec_dai: codec {
 102 +                    sound-dai = <&codec_in>;
 103 +                };
 104 +            };
 105 +
 106 +            playback_link: simple-audio-card,dai-link@1 {
 107 +                format = "i2s";
 108 +
 109 +                p_cpu_dai: cpu {
 110 +                    sound-dai = <&i2s>;
 111 +
 112 +/* example TDM slot configuration
 113 +                    dai-tdm-slot-num = <2>;
 114 +                    dai-tdm-slot-width = <32>;
 115 +*/
 116 +                };
 117 +
 118 +                p_codec_dai: codec {
 119 +                    sound-dai = <&codec_out>;
 120 +                };
 121 +            };
 122 +        };
 123 +    };
 124 +
 125 +    __overrides__ {
 126 +        alsaname = <&snd>, "simple-audio-card,name";
 127 +    };
 128 +};