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

   1 Renesas R-Car sound
   2
   3 =============================================
   4 * Modules
   5 =============================================
   6
   7 Renesas R-Car and RZ/G sound is constructed from below modules
   8 (for Gen2 or later)
   9
  10  SCU            : Sampling Rate Converter Unit
  11   - SRC         : Sampling Rate Converter
  12   - CMD
  13    - CTU        : Channel Transfer Unit
  14    - MIX        : Mixer
  15    - DVC        : Digital Volume and Mute Function
  16  SSIU           : Serial Sound Interface Unit
  17  SSI            : Serial Sound Interface
  18
  19 See detail of each module's channels, connection, limitation on datasheet
  20
  21 =============================================
  22 * Multi channel
  23 =============================================
  24
  25 Multi channel is supported by Multi-SSI, or TDM-SSI.
  26
  27  Multi-SSI      : 6ch case, you can use stereo x 3 SSI
  28  TDM-SSI        : 6ch case, you can use TDM
  29
  30 =============================================
  31 * Enable/Disable each modules
  32 =============================================
  33
  34 See datasheet to check SRC/CTU/MIX/DVC connect-limitation.
  35 DT controls enabling/disabling module.
  36 ${LINUX}/arch/arm/boot/dts/r8a7790-lager.dts can be good example.
  37 This is example of
  38
  39 Playback: [MEM] -> [SRC2] -> [DVC0] -> [SSIU0/SSI0] -> [codec]
  40 Capture:  [MEM] <- [DVC1] <- [SRC3] <- [SSIU1/SSI1] <- [codec]
  41
  42 see "Example: simple sound card"
  43
  44 You can use below.
  45 ${LINUX}/arch/arm/boot/dts/r8a7790.dts can be good example.
  46
  47         &src0   &ctu00  &mix0   &dvc0   &ssi0
  48         &src1   &ctu01  &mix1   &dvc1   &ssi1
  49         &src2   &ctu02                  &ssi2
  50         &src3   &ctu03                  &ssi3
  51         &src4                           &ssi4
  52         &src5   &ctu10                  &ssi5
  53         &src6   &ctu11                  &ssi6
  54         &src7   &ctu12                  &ssi7
  55         &src8   &ctu13                  &ssi8
  56         &src9                           &ssi9
  57
  58 =============================================
  59 * SRC (Sampling Rate Converter)
  60 =============================================
  61
  62  [xx]Hz        [yy]Hz
  63  ------> [SRC] ------>
  64
  65 SRC can convert [xx]Hz to [yy]Hz. Then, it has below 2 modes
  66
  67  Asynchronous mode:     input data / output data are based on different clocks.
  68                         you can use this mode on Playback / Capture
  69  Synchronous mode:      input data / output data are based on same clocks.
  70                         This mode will be used if system doesn't have its input clock,
  71                         for example digital TV case.
  72                         you can use this mode on Playback
  73
  74 ------------------
  75 **     Asynchronous mode
  76 ------------------
  77
  78 You need to use "simple-scu-audio-card" or "audio-graph-scu-card" for it.
  79 see "Example: simple sound card for Asynchronous mode"
  80
  81 ------------------
  82 **     Synchronous mode
  83 ------------------
  84
  85         > amixer set "SRC Out Rate" on
  86         > aplay xxxx.wav
  87         > amixer set "SRC Out Rate" 48000
  88         > amixer set "SRC Out Rate" 44100
  89
  90 =============================================
  91 * CTU (Channel Transfer Unit)
  92 =============================================
  93
  94  [xx]ch        [yy]ch
  95  ------> [CTU] -------->
  96
  97 CTU can convert [xx]ch to [yy]ch, or exchange outputed channel.
  98 CTU conversion needs matrix settings.
  99 For more detail information, see below
 100
 101         Renesas R-Car datasheet
 102          - Sampling Rate Converter Unit (SCU)
 103           - SCU Operation
 104            - CMD Block
 105             - Functional Blocks in CMD
 106
 107         Renesas R-Car datasheet
 108          - Sampling Rate Converter Unit (SCU)
 109           - Register Description
 110            - CTUn Scale Value exx Register (CTUn_SVxxR)
 111
 112         ${LINUX}/sound/soc/sh/rcar/ctu.c
 113          - comment of header
 114
 115 You need to use "simple-scu-audio-card" or "audio-graph-scu-card" for it.
 116 see "Example: simple sound card for channel convert"
 117
 118 Ex) Exchange output channel
 119  Input -> Output
 120   1ch  ->  0ch
 121   0ch  ->  1ch
 122
 123   example of using matrix
 124         output 0ch = (input 0ch x 0) + (input 1ch x 1)
 125         output 1ch = (input 0ch x 1) + (input 1ch x 0)
 126
 127         amixer set "CTU Reset" on
 128         amixer set "CTU Pass" 9,10
 129         amixer set "CTU SV0" 0,4194304
 130         amixer set "CTU SV1" 4194304,0
 131
 132  example of changing connection
 133         amixer set "CTU Reset" on
 134         amixer set "CTU Pass" 2,1
 135
 136 =============================================
 137 * MIX (Mixer)
 138 =============================================
 139
 140 MIX merges 2 sounds path. You can see 2 sound interface on system,
 141 and these sounds will be merged by MIX.
 142
 143         aplay -D plughw:0,0 xxxx.wav &
 144         aplay -D plughw:0,1 yyyy.wav
 145
 146 You need to use "simple-scu-audio-card" or "audio-graph-scu-card" for it.
 147 Ex)
 148         [MEM] -> [SRC1] -> [CTU02] -+-> [MIX0] -> [DVC0] -> [SSI0]
 149                                     |
 150         [MEM] -> [SRC2] -> [CTU03] -+
 151
 152 see "Example: simple sound card for MIXer"
 153
 154 =============================================
 155 * DVC (Digital Volume and Mute Function)
 156 =============================================
 157
 158 DVC controls Playback/Capture volume.
 159
 160 Playback Volume
 161         amixer set "DVC Out" 100%
 162
 163 Capture Volume
 164         amixer set "DVC In" 100%
 165
 166 Playback Mute
 167         amixer set "DVC Out Mute" on
 168
 169 Capture Mute
 170         amixer set "DVC In Mute" on
 171
 172 Volume Ramp
 173         amixer set "DVC Out Ramp Up Rate"   "0.125 dB/64 steps"
 174         amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps"
 175         amixer set "DVC Out Ramp" on
 176         aplay xxx.wav &
 177         amixer set "DVC Out"  80%  // Volume Down
 178         amixer set "DVC Out" 100%  // Volume Up
 179
 180 =============================================
 181 * SSIU (Serial Sound Interface Unit)
 182 =============================================
 183
 184 SSIU can avoid some under/over run error, because it has some buffer.
 185 But you can't use it if SSI was PIO mode.
 186 In DMA mode, you can select not to use SSIU by using "no-busif" via SSI.
 187
 188 SSIU handles BUSIF which will be used for TDM Split mode.
 189 This driver is assuming that audio-graph card will be used.
 190
 191 TDM Split mode merges 4 sounds. You can see 4 sound interface on system,
 192 and these sounds will be merged SSIU/SSI.
 193
 194         aplay -D plughw:0,0 xxxx.wav &
 195         aplay -D plughw:0,1 xxxx.wav &
 196         aplay -D plughw:0,2 xxxx.wav &
 197         aplay -D plughw:0,3 xxxx.wav
 198
 199                   2ch                     8ch
 200         [MEM] -> [SSIU 30] -+-> [SSIU 3] --> [Codec]
 201                   2ch       |
 202         [MEM] -> [SSIU 31] -+
 203                   2ch       |
 204         [MEM] -> [SSIU 32] -+
 205                   2ch       |
 206         [MEM] -> [SSIU 33] -+
 207
 208 see "Example: simple sound card for TDM Split"
 209
 210 =============================================
 211 * SSI (Serial Sound Interface)
 212 =============================================
 213
 214 **  PIO mode
 215
 216 You can use PIO mode which is for connection check by using.
 217 Note: The system will drop non-SSI modules in PIO mode
 218 even though if DT is selecting other modules.
 219
 220         &ssi0 {
 221                 pio-transfer
 222         };
 223
 224 ** DMA mode without SSIU
 225
 226 You can use DMA without SSIU.
 227 Note: under/over run, or noise are likely to occur
 228
 229         &ssi0 {
 230                 no-busif;
 231         };
 232
 233 ** PIN sharing
 234
 235 Each SSI can share WS pin. It is based on platform.
 236 This is example if SSI1 want to share WS pin with SSI0
 237
 238         &ssi1 {
 239                 shared-pin;
 240         };
 241
 242 ** Multi-SSI
 243
 244 You can use Multi-SSI.
 245 This is example of SSI0/SSI1/SSI2 (= for 6ch)
 246
 247 see "Example: simple sound card for Multi channel"
 248
 249 ** TDM-SSI
 250
 251 You can use TDM with SSI.
 252 This is example of TDM 6ch.
 253 Driver can automatically switches TDM <-> stereo mode in this case.
 254
 255 see "Example: simple sound card for TDM"
 256
 257 =============================================
 258 Required properties:
 259 =============================================
 260
 261 - compatible                    : "renesas,rcar_sound-<soctype>", fallbacks
 262                                   "renesas,rcar_sound-gen1" if generation1, and
 263                                   "renesas,rcar_sound-gen2" if generation2 (or RZ/G1)
 264                                   "renesas,rcar_sound-gen3" if generation3 (or RZ/G2)
 265                                   Examples with soctypes are:
 266                                     - "renesas,rcar_sound-r8a7742" (RZ/G1H)
 267                                     - "renesas,rcar_sound-r8a7743" (RZ/G1M)
 268                                     - "renesas,rcar_sound-r8a7744" (RZ/G1N)
 269                                     - "renesas,rcar_sound-r8a7745" (RZ/G1E)
 270                                     - "renesas,rcar_sound-r8a77470" (RZ/G1C)
 271                                     - "renesas,rcar_sound-r8a774a1" (RZ/G2M)
 272                                     - "renesas,rcar_sound-r8a774b1" (RZ/G2N)
 273                                     - "renesas,rcar_sound-r8a774c0" (RZ/G2E)
 274                                     - "renesas,rcar_sound-r8a774e1" (RZ/G2H)
 275                                     - "renesas,rcar_sound-r8a7778" (R-Car M1A)
 276                                     - "renesas,rcar_sound-r8a7779" (R-Car H1)
 277                                     - "renesas,rcar_sound-r8a7790" (R-Car H2)
 278                                     - "renesas,rcar_sound-r8a7791" (R-Car M2-W)
 279                                     - "renesas,rcar_sound-r8a7793" (R-Car M2-N)
 280                                     - "renesas,rcar_sound-r8a7794" (R-Car E2)
 281                                     - "renesas,rcar_sound-r8a7795" (R-Car H3)
 282                                     - "renesas,rcar_sound-r8a7796" (R-Car M3-W)
 283                                     - "renesas,rcar_sound-r8a77965" (R-Car M3-N)
 284                                     - "renesas,rcar_sound-r8a77990" (R-Car E3)
 285                                     - "renesas,rcar_sound-r8a77995" (R-Car D3)
 286 - reg                           : Should contain the register physical address.
 287                                   required register is
 288                                    SRU/ADG/SSI      if generation1
 289                                    SRU/ADG/SSIU/SSI/AUDIO-DMAC-periperi if generation2/generation3
 290                                    Select extended AUDIO-DMAC-periperi address if SoC has it,
 291                                    otherwise select normal AUDIO-DMAC-periperi address.
 292 - reg-names                     : Should contain the register names.
 293                                    scu/adg/ssi  if generation1
 294                                    scu/adg/ssiu/ssi/audmapp if generation2/generation3
 295 - rcar_sound,ssi                : Should contain SSI feature.
 296                                   The number of SSI subnode should be same as HW.
 297                                   see below for detail.
 298 - rcar_sound,ssiu               : Should contain SSIU feature.
 299                                   The number of SSIU subnode should be same as HW.
 300                                   see below for detail.
 301 - rcar_sound,src                : Should contain SRC feature.
 302                                   The number of SRC subnode should be same as HW.
 303                                   see below for detail.
 304 - rcar_sound,ctu                : Should contain CTU feature.
 305                                   The number of CTU subnode should be same as HW.
 306                                   see below for detail.
 307 - rcar_sound,mix                : Should contain MIX feature.
 308                                   The number of MIX subnode should be same as HW.
 309                                   see below for detail.
 310 - rcar_sound,dvc                : Should contain DVC feature.
 311                                   The number of DVC subnode should be same as HW.
 312                                   see below for detail.
 313 - rcar_sound,dai                : DAI contents.
 314                                   The number of DAI subnode should be same as HW.
 315                                   see below for detail.
 316 - #sound-dai-cells              : it must be 0 if your system is using single DAI
 317                                   it must be 1 if your system is using multi  DAI
 318 - clocks                        : References to SSI/SRC/MIX/CTU/DVC/AUDIO_CLK clocks.
 319 - clock-names                   : List of necessary clock names.
 320                                   "ssi-all", "ssi.X", "src.X", "mix.X", "ctu.X",
 321                                   "dvc.X", "clk_a", "clk_b", "clk_c", "clk_i"
 322
 323 Optional properties:
 324 - #clock-cells                  : it must be 0 if your system has audio_clkout
 325                                   it must be 1 if your system has audio_clkout0/1/2/3
 326 - clock-frequency               : for all audio_clkout0/1/2/3
 327 - clkout-lr-asynchronous        : boolean property. it indicates that audio_clkoutn
 328                                   is asynchronizes with lr-clock.
 329 - resets                        : References to SSI resets.
 330 - reset-names                   : List of valid reset names.
 331                                   "ssi-all", "ssi.X"
 332
 333 SSI subnode properties:
 334 - interrupts                    : Should contain SSI interrupt for PIO transfer
 335 - shared-pin                    : if shared clock pin
 336 - pio-transfer                  : use PIO transfer mode
 337 - no-busif                      : BUSIF is not ussed when [mem -> SSI] via DMA case
 338 - dma                           : Should contain Audio DMAC entry
 339 - dma-names                     : SSI  case "rx"  (=playback), "tx"  (=capture)
 340                                   Deprecated: see SSIU subnode properties
 341                                   SSIU case "rxu" (=playback), "txu" (=capture)
 342
 343 SSIU subnode properties:
 344 - dma                           : Should contain Audio DMAC entry
 345 - dma-names                     : "rx" (=playback), "tx" (=capture)
 346
 347 SRC subnode properties:
 348 - dma                           : Should contain Audio DMAC entry
 349 - dma-names                     : "rx" (=playback), "tx" (=capture)
 350
 351 DVC subnode properties:
 352 - dma                           : Should contain Audio DMAC entry
 353 - dma-names                     : "tx" (=playback/capture)
 354
 355 DAI subnode properties:
 356 - playback                      : list of playback modules
 357 - capture                       : list of capture  modules
 358
 359
 360 =============================================
 361 Example:
 362 =============================================
 363
 364 rcar_sound: sound@ec500000 {
 365         #sound-dai-cells = <1>;
 366         compatible = "renesas,rcar_sound-r8a7791", "renesas,rcar_sound-gen2";
 367         reg =   <0 0xec500000 0 0x1000>, /* SCU */
 368                 <0 0xec5a0000 0 0x100>,  /* ADG */
 369                 <0 0xec540000 0 0x1000>, /* SSIU */
 370                 <0 0xec541000 0 0x1280>, /* SSI */
 371                 <0 0xec740000 0 0x200>;  /* Audio DMAC peri peri*/
 372         reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
 373
 374         clocks = <&mstp10_clks R8A7790_CLK_SSI_ALL>,
 375                 <&mstp10_clks R8A7790_CLK_SSI9>, <&mstp10_clks R8A7790_CLK_SSI8>,
 376                 <&mstp10_clks R8A7790_CLK_SSI7>, <&mstp10_clks R8A7790_CLK_SSI6>,
 377                 <&mstp10_clks R8A7790_CLK_SSI5>, <&mstp10_clks R8A7790_CLK_SSI4>,
 378                 <&mstp10_clks R8A7790_CLK_SSI3>, <&mstp10_clks R8A7790_CLK_SSI2>,
 379                 <&mstp10_clks R8A7790_CLK_SSI1>, <&mstp10_clks R8A7790_CLK_SSI0>,
 380                 <&mstp10_clks R8A7790_CLK_SCU_SRC9>, <&mstp10_clks R8A7790_CLK_SCU_SRC8>,
 381                 <&mstp10_clks R8A7790_CLK_SCU_SRC7>, <&mstp10_clks R8A7790_CLK_SCU_SRC6>,
 382                 <&mstp10_clks R8A7790_CLK_SCU_SRC5>, <&mstp10_clks R8A7790_CLK_SCU_SRC4>,
 383                 <&mstp10_clks R8A7790_CLK_SCU_SRC3>, <&mstp10_clks R8A7790_CLK_SCU_SRC2>,
 384                 <&mstp10_clks R8A7790_CLK_SCU_SRC1>, <&mstp10_clks R8A7790_CLK_SCU_SRC0>,
 385                 <&mstp10_clks R8A7790_CLK_SCU_DVC0>, <&mstp10_clks R8A7790_CLK_SCU_DVC1>,
 386                 <&audio_clk_a>, <&audio_clk_b>, <&audio_clk_c>, <&m2_clk>;
 387         clock-names = "ssi-all",
 388                         "ssi.9", "ssi.8", "ssi.7", "ssi.6", "ssi.5",
 389                         "ssi.4", "ssi.3", "ssi.2", "ssi.1", "ssi.0",
 390                         "src.9", "src.8", "src.7", "src.6", "src.5",
 391                         "src.4", "src.3", "src.2", "src.1", "src.0",
 392                         "dvc.0", "dvc.1",
 393                         "clk_a", "clk_b", "clk_c", "clk_i";
 394
 395         rcar_sound,dvc {
 396                 dvc0: dvc-0 {
 397                         dmas = <&audma0 0xbc>;
 398                         dma-names = "tx";
 399                 };
 400                 dvc1: dvc-1 {
 401                         dmas = <&audma0 0xbe>;
 402                         dma-names = "tx";
 403                 };
 404         };
 405
 406         rcar_sound,mix {
 407                 mix0: mix-0 { };
 408                 mix1: mix-1 { };
 409         };
 410
 411         rcar_sound,ctu {
 412                 ctu00: ctu-0 { };
 413                 ctu01: ctu-1 { };
 414                 ctu02: ctu-2 { };
 415                 ctu03: ctu-3 { };
 416                 ctu10: ctu-4 { };
 417                 ctu11: ctu-5 { };
 418                 ctu12: ctu-6 { };
 419                 ctu13: ctu-7 { };
 420         };
 421
 422         rcar_sound,src {
 423                 src0: src-0 {
 424                         interrupts = <0 352 IRQ_TYPE_LEVEL_HIGH>;
 425                         dmas = <&audma0 0x85>, <&audma1 0x9a>;
 426                         dma-names = "rx", "tx";
 427                 };
 428                 src1: src-1 {
 429                         interrupts = <0 353 IRQ_TYPE_LEVEL_HIGH>;
 430                         dmas = <&audma0 0x87>, <&audma1 0x9c>;
 431                         dma-names = "rx", "tx";
 432                 };
 433                 src2: src-2 {
 434                         interrupts = <0 354 IRQ_TYPE_LEVEL_HIGH>;
 435                         dmas = <&audma0 0x89>, <&audma1 0x9e>;
 436                         dma-names = "rx", "tx";
 437                 };
 438                 src3: src-3 {
 439                         interrupts = <0 355 IRQ_TYPE_LEVEL_HIGH>;
 440                         dmas = <&audma0 0x8b>, <&audma1 0xa0>;
 441                         dma-names = "rx", "tx";
 442                 };
 443                 src4: src-4 {
 444                         interrupts = <0 356 IRQ_TYPE_LEVEL_HIGH>;
 445                         dmas = <&audma0 0x8d>, <&audma1 0xb0>;
 446                         dma-names = "rx", "tx";
 447                 };
 448                 src5: src-5 {
 449                         interrupts = <0 357 IRQ_TYPE_LEVEL_HIGH>;
 450                         dmas = <&audma0 0x8f>, <&audma1 0xb2>;
 451                         dma-names = "rx", "tx";
 452                 };
 453                 src6: src-6 {
 454                         interrupts = <0 358 IRQ_TYPE_LEVEL_HIGH>;
 455                         dmas = <&audma0 0x91>, <&audma1 0xb4>;
 456                         dma-names = "rx", "tx";
 457                 };
 458                 src7: src-7 {
 459                         interrupts = <0 359 IRQ_TYPE_LEVEL_HIGH>;
 460                         dmas = <&audma0 0x93>, <&audma1 0xb6>;
 461                         dma-names = "rx", "tx";
 462                 };
 463                 src8: src-8 {
 464                         interrupts = <0 360 IRQ_TYPE_LEVEL_HIGH>;
 465                         dmas = <&audma0 0x95>, <&audma1 0xb8>;
 466                         dma-names = "rx", "tx";
 467                 };
 468                 src9: src-9 {
 469                         interrupts = <0 361 IRQ_TYPE_LEVEL_HIGH>;
 470                         dmas = <&audma0 0x97>, <&audma1 0xba>;
 471                         dma-names = "rx", "tx";
 472                 };
 473         };
 474
 475         rcar_sound,ssiu {
 476                 ssiu00: ssiu-0 {
 477                         dmas = <&audma0 0x15>, <&audma1 0x16>;
 478                         dma-names = "rx", "tx";
 479                 };
 480                 ssiu01: ssiu-1 {
 481                         dmas = <&audma0 0x35>, <&audma1 0x36>;
 482                         dma-names = "rx", "tx";
 483                 };
 484
 485                 ...
 486
 487                 ssiu95: ssiu-49 {
 488                         dmas = <&audma0 0xA5>, <&audma1 0xA6>;
 489                         dma-names = "rx", "tx";
 490                 };
 491                 ssiu96: ssiu-50 {
 492                         dmas = <&audma0 0xA7>, <&audma1 0xA8>;
 493                         dma-names = "rx", "tx";
 494                 };
 495                 ssiu97: ssiu-51 {
 496                         dmas = <&audma0 0xA9>, <&audma1 0xAA>;
 497                         dma-names = "rx", "tx";
 498                 };
 499         };
 500
 501         rcar_sound,ssi {
 502                 ssi0: ssi-0 {
 503                         interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;
 504                         dmas = <&audma0 0x01>, <&audma1 0x02>;
 505                         dma-names = "rx", "tx";
 506                 };
 507                 ssi1: ssi-1 {
 508                         interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;
 509                         dmas = <&audma0 0x03>, <&audma1 0x04>;
 510                         dma-names = "rx", "tx";
 511                 };
 512
 513                 ...
 514
 515                 ssi8: ssi-8 {
 516                         interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;
 517                         dmas = <&audma0 0x11>, <&audma1 0x12>;
 518                         dma-names = "rx", "tx";
 519                 };
 520                 ssi9: ssi-9 {
 521                         interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;
 522                         dmas = <&audma0 0x13>, <&audma1 0x14>;
 523                         dma-names = "rx", "tx";
 524                 };
 525         };
 526
 527         rcar_sound,dai {
 528                 dai0 {
 529                         playback = <&ssi5 &src5>;
 530                         capture  = <&ssi6>;
 531                 };
 532                 dai1 {
 533                         playback = <&ssi3>;
 534                 };
 535                 dai2 {
 536                         capture  = <&ssi4>;
 537                 };
 538                 dai3 {
 539                         playback = <&ssi7>;
 540                 };
 541                 dai4 {
 542                         capture  = <&ssi8>;
 543                 };
 544         };
 545 };
 546
 547 =============================================
 548 Example: simple sound card
 549 =============================================
 550
 551         rsnd_ak4643: sound {
 552                 compatible = "simple-audio-card";
 553
 554                 simple-audio-card,format = "left_j";
 555                 simple-audio-card,bitclock-master = <&sndcodec>;
 556                 simple-audio-card,frame-master = <&sndcodec>;
 557
 558                 sndcpu: simple-audio-card,cpu {
 559                         sound-dai = <&rcar_sound>;
 560                 };
 561
 562                 sndcodec: simple-audio-card,codec {
 563                         sound-dai = <&ak4643>;
 564                         clocks = <&audio_clock>;
 565                 };
 566         };
 567
 568 &rcar_sound {
 569         pinctrl-0 = <&sound_pins &sound_clk_pins>;
 570         pinctrl-names = "default";
 571
 572         /* Single DAI */
 573         #sound-dai-cells = <0>;
 574
 575
 576         rcar_sound,dai {
 577                 dai0 {
 578                         playback = <&ssi0 &src2 &dvc0>;
 579                         capture  = <&ssi1 &src3 &dvc1>;
 580                 };
 581         };
 582 };
 583
 584 &ssi1 {
 585         shared-pin;
 586 };
 587
 588 =============================================
 589 Example: simple sound card for Asynchronous mode
 590 =============================================
 591
 592 sound {
 593         compatible = "simple-scu-audio-card";
 594         ...
 595         /*
 596          * SRC Asynchronous mode setting
 597          * Playback:
 598          * All input data will be converted to 48kHz
 599          * Capture:
 600          * Inputed 48kHz data will be converted to
 601          * system specified Hz
 602          */
 603         simple-audio-card,convert-rate = <48000>;
 604         ...
 605         simple-audio-card,cpu {
 606                 sound-dai = <&rcar_sound>;
 607         };
 608         simple-audio-card,codec {
 609                 ...
 610         };
 611 };
 612
 613 =============================================
 614 Example: simple sound card for channel convert
 615 =============================================
 616
 617 sound {
 618         compatible = "simple-scu-audio-card";
 619         ...
 620         /*
 621          * CTU setting
 622          * All input data will be converted to 2ch
 623          * as output data
 624          */
 625         simple-audio-card,convert-channels = <2>;
 626         ...
 627         simple-audio-card,cpu {
 628                 sound-dai = <&rcar_sound>;
 629         };
 630         simple-audio-card,codec {
 631                 ...
 632         };
 633 };
 634
 635 =============================================
 636 Example: simple sound card for MIXer
 637 =============================================
 638
 639 sound {
 640         compatible = "simple-scu-audio-card";
 641         ...
 642         simple-audio-card,cpu@0 {
 643                 sound-dai = <&rcar_sound 0>;
 644         };
 645         simple-audio-card,cpu@1 {
 646                 sound-dai = <&rcar_sound 1>;
 647         };
 648         simple-audio-card,codec {
 649                 ...
 650         };
 651 };
 652
 653 &rcar_sound {
 654         ...
 655         rcar_sound,dai {
 656                 dai0 {
 657                         playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>;
 658                 };
 659                 dai1 {
 660                         playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
 661                 };
 662         };
 663 };
 664
 665 =============================================
 666 Example: simple sound card for TDM
 667 =============================================
 668
 669 rsnd_tdm: sound {
 670         compatible = "simple-audio-card";
 671
 672         simple-audio-card,format = "left_j";
 673         simple-audio-card,bitclock-master = <&sndcodec>;
 674         simple-audio-card,frame-master = <&sndcodec>;
 675
 676         sndcpu: simple-audio-card,cpu {
 677                 sound-dai = <&rcar_sound>;
 678                 dai-tdm-slot-num = <6>;
 679         };
 680
 681         sndcodec: simple-audio-card,codec {
 682                 sound-dai = <&xxx>;
 683         };
 684 };
 685
 686 =============================================
 687 Example: simple sound card for TDM Split
 688 =============================================
 689
 690 sound_card: sound {
 691         compatible = "audio-graph-scu-card";
 692         prefix = "xxxx";
 693         routing = "xxxx Playback", "DAI0 Playback",
 694                   "xxxx Playback", "DAI1 Playback",
 695                   "xxxx Playback", "DAI2 Playback",
 696                   "xxxx Playback", "DAI3 Playback";
 697         convert-channels = <8>; /* TDM Split */
 698
 699         dais = <&rsnd_port0     /* playback ch1/ch2 */
 700                 &rsnd_port1     /* playback ch3/ch4 */
 701                 &rsnd_port2     /* playback ch5/ch6 */
 702                 &rsnd_port3     /* playback ch7/ch8 */
 703                 >;
 704 };
 705
 706 audio-codec {
 707         ...
 708         port {
 709                 codec_0: endpoint@1 {
 710                         remote-endpoint = <&rsnd_ep0>;
 711                 };
 712                 codec_1: endpoint@2 {
 713                         remote-endpoint = <&rsnd_ep1>;
 714                 };
 715                 codec_2: endpoint@3 {
 716                         remote-endpoint = <&rsnd_ep2>;
 717                 };
 718                 codec_3: endpoint@4 {
 719                         remote-endpoint = <&rsnd_ep3>;
 720                 };
 721         };
 722 };
 723
 724 &rcar_sound {
 725         ...
 726         ports {
 727                 rsnd_port0: port@0 {
 728                         rsnd_ep0: endpoint {
 729                                 remote-endpoint = <&codec_0>;
 730                                 ...
 731                                 playback = <&ssiu30 &ssi3>;
 732                         };
 733                 };
 734                 rsnd_port1: port@1 {
 735                         rsnd_ep1: endpoint {
 736                                 remote-endpoint = <&codec_1>;
 737                                 ...
 738                                 playback = <&ssiu31 &ssi3>;
 739                         };
 740                 };
 741                 rsnd_port2: port@2 {
 742                         rsnd_ep2: endpoint {
 743                                 remote-endpoint = <&codec_2>;
 744                                 ...
 745                                 playback = <&ssiu32 &ssi3>;
 746                         };
 747                 };
 748                 rsnd_port3: port@3 {
 749                         rsnd_ep3: endpoint {
 750                                 remote-endpoint = <&codec_3>;
 751                                 ...
 752                                 playback = <&ssiu33 &ssi3>;
 753                         };
 754                 };
 755         };
 756 };
 757
 758 =============================================
 759 Example: simple sound card for Multi channel
 760 =============================================
 761
 762 &rcar_sound {
 763         pinctrl-0 = <&sound_pins &sound_clk_pins>;
 764         pinctrl-names = "default";
 765
 766         /* Single DAI */
 767         #sound-dai-cells = <0>;
 768
 769
 770         rcar_sound,dai {
 771                 dai0 {
 772                         playback = <&ssi0 &ssi1 &ssi2 &src0 &dvc0>;
 773                 };
 774         };
 775 };