meta-agl-bsp/meta-rcar-gen3/recipes-kernel/linux/files/0004-ADSP-enable-and-add-sound-hardware-abstraction.patch

   1 The ADSP on Renesas SoCs required a reserved memory area to become
   2 enabled, and this needs to be done manually.
   3
   4 This patch adds sound hardware abstraction information for the m3ulcb
   5 and m3ulcb-kf (kingfisher) device trees. This is helpful on-board the
   6 ADSP for dynamically determining sound hardware at runtime, allowing
   7 single binaries to be used between the two boards.
   8
   9 Future work will incorporate the h3ulcb and Salvator boards into the
  10 abstraction.
  11
  12 Signed-off-by: Ronan Le Martret <ronan.lemartret@iot.bzh>
  13 Signed-off-by: Mark Farrugia <mark.farrugia@fiberdyne.com.au>
  14 ---
  15 diff --git a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
  16 index 1cd64c1b3b31..71e59da3528d 100644
  17 --- a/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
  18 +++ b/arch/arm64/boot/dts/renesas/r8a7796-m3ulcb.dts
  19 @@ -42,11 +42,18 @@
  20                         reg = <0x00000000 0x54000000 0x0 0x03000000>;
  21                 };
  22
  23 +               /* For Audio DSP */
  24 +               adsp_reserved: linux,adsp {
  25 +                       compatible = "shared-dma-pool";
  26 +                       reusable;
  27 +                       reg = <0x00000000 0x57000000 0x0 0x01000000>;
  28 +               };
  29 +
  30                 /* global autoconfigured region for contiguous allocations */
  31                 linux,cma@57000000 {
  32                         compatible = "shared-dma-pool";
  33                         reusable;
  34 -                       reg = <0x00000000 0x57000000 0x0 0x19000000>;
  35 +                       reg = <0x00000000 0x58000000 0x0 0x18000000>;
  36                         linux,cma-default;
  37                 };
  38
  39 @@ -110,6 +117,42 @@
  40                       "dclkin.0", "dclkin.1", "dclkin.2";
  41  };
  42
  43 +&adsp {
  44 +       status = "okay";
  45 +       clock-frequency = <12288000 11289600>;
  46 +       audio-clocks = <22579200 24576000>;
  47 +       memory-region = <&adsp_reserved>;
  48 +
  49 +       /* ADSP playback setting for ak4613 */
  50 +       adsp_playback0: adsp,playback {
  51 +               mode  = "i2s";
  52 +               clock-mode = "master";
  53 +               bus-width = <16>;
  54 +               ssi = <0>;
  55 +               bus-if = <0>;
  56 +               channels = <2>;
  57 +               pin-share-ssi = <1>;
  58 +       };
  59 +
  60 +       /* ADSP capture setting for ak4613 */
  61 +       adsp_capture0: adsp,capture {
  62 +               mode  = "i2s";
  63 +               clock-mode = "slave";
  64 +               bus-width = <16>;
  65 +               ssi = <1>;
  66 +               bus-if = <0>;
  67 +               channels = <2>;
  68 +               pin-share-ssi = <0>;
  69 +       };
  70 +
  71 +       adsp,ports {
  72 +               port@0 {
  73 +                       playback = <&adsp_playback0>;
  74 +                       capture  = <&adsp_capture0>;
  75 +               };
  76 +       };
  77 +};
  78 +
  79  &vspb {
  80         status = "okay";
  81  };