Documentation/devicetree/bindings/sound/renesas,rsnd.txt

   1 Renesas R-Car sound
   2
   3 Required properties:
   4 - compatible                    : "renesas,rcar_sound-<soctype>", fallbacks
   5                                   "renesas,rcar_sound-gen1" if generation1, and
   6                                   "renesas,rcar_sound-gen2" if generation2
   7                                   Examples with soctypes are:
   8                                     - "renesas,rcar_sound-r8a7790" (R-Car H2)
   9                                     - "renesas,rcar_sound-r8a7791" (R-Car M2-W)
  10 - reg                           : Should contain the register physical address.
  11                                   required register is
  12                                    SRU/ADG/SSI      if generation1
  13                                    SRU/ADG/SSIU/SSI if generation2
  14 - rcar_sound,ssi                : Should contain SSI feature.
  15                                   The number of SSI subnode should be same as HW.
  16                                   see below for detail.
  17 - rcar_sound,src                : Should contain SRC feature.
  18                                   The number of SRC subnode should be same as HW.
  19                                   see below for detail.
  20 - rcar_sound,dvc                : Should contain DVC feature.
  21                                   The number of DVC subnode should be same as HW.
  22                                   see below for detail.
  23 - rcar_sound,dai                : DAI contents.
  24                                   The number of DAI subnode should be same as HW.
  25                                   see below for detail.
  26
  27 SSI subnode properties:
  28 - interrupts                    : Should contain SSI interrupt for PIO transfer
  29 - shared-pin                    : if shared clock pin
  30 - pio-transfer                  : use PIO transfer mode
  31 - no-busif                      : BUSIF is not ussed when [mem -> SSI] via DMA case
  32
  33 SRC subnode properties:
  34 no properties at this point
  35
  36 DAI subnode properties:
  37 - playback                      : list of playback modules
  38 - capture                       : list of capture  modules
  39
  40 Example:
  41
  42 rcar_sound: rcar_sound@ec500000 {
  43         #sound-dai-cells = <1>;
  44         compatible = "renesas,rcar_sound-r8a7791", "renesas,rcar_sound-gen2";
  45         reg =   <0 0xec500000 0 0x1000>, /* SCU */
  46                 <0 0xec5a0000 0 0x100>,  /* ADG */
  47                 <0 0xec540000 0 0x1000>, /* SSIU */
  48                 <0 0xec541000 0 0x1280>; /* SSI */
  49
  50         rcar_sound,dvc {
  51                 dvc0: dvc@0 { };
  52                 dvc1: dvc@1 { };
  53         };
  54
  55         rcar_sound,src {
  56                 src0: src@0 { };
  57                 src1: src@1 { };
  58                 src2: src@2 { };
  59                 src3: src@3 { };
  60                 src4: src@4 { };
  61                 src5: src@5 { };
  62                 src6: src@6 { };
  63                 src7: src@7 { };
  64                 src8: src@8 { };
  65                 src9: src@9 { };
  66         };
  67
  68         rcar_sound,ssi {
  69                 ssi0: ssi@0 {
  70                         interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;
  71                 };
  72                 ssi1: ssi@1 {
  73                         interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;
  74                 };
  75                 ssi2: ssi@2 {
  76                         interrupts = <0 372 IRQ_TYPE_LEVEL_HIGH>;
  77                 };
  78                 ssi3: ssi@3 {
  79                         interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
  80                 };
  81                 ssi4: ssi@4 {
  82                         interrupts = <0 374 IRQ_TYPE_LEVEL_HIGH>;
  83                 };
  84                 ssi5: ssi@5 {
  85                         interrupts = <0 375 IRQ_TYPE_LEVEL_HIGH>;
  86                 };
  87                 ssi6: ssi@6 {
  88                         interrupts = <0 376 IRQ_TYPE_LEVEL_HIGH>;
  89                 };
  90                 ssi7: ssi@7 {
  91                         interrupts = <0 377 IRQ_TYPE_LEVEL_HIGH>;
  92                 };
  93                 ssi8: ssi@8 {
  94                         interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;
  95                 };
  96                 ssi9: ssi@9 {
  97                         interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;
  98                 };
  99         };
 100
 101         rcar_sound,dai {
 102                 dai0 {
 103                         playback = <&ssi5 &src5>;
 104                         capture  = <&ssi6>;
 105                 };
 106                 dai1 {
 107                         playback = <&ssi3>;
 108                 };
 109                 dai2 {
 110                         capture  = <&ssi4>;
 111                 };
 112                 dai3 {
 113                         playback = <&ssi7>;
 114                 };
 115                 dai4 {
 116                         capture  = <&ssi8>;
 117                 };
 118         };
 119 };