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

   1 Renesas R-Car sound
   2
   3 =============================================
   4 * Modules
   5 =============================================
   6
   7 Renesas R-Car 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         &rcar_sound {
  43                 ...
  44                 rcar_sound,dai {
  45                         dai0 {
  46                                 playback = <&ssi0 &src2 &dvc0>;
  47                                 capture  = <&ssi1 &src3 &dvc1>;
  48                         };
  49                 };
  50         };
  51
  52 You can use below.
  53 ${LINUX}/arch/arm/boot/dts/r8a7790.dts can be good example.
  54
  55         &src0   &ctu00  &mix0   &dvc0   &ssi0
  56         &src1   &ctu01  &mix1   &dvc1   &ssi1
  57         &src2   &ctu02                  &ssi2
  58         &src3   &ctu03                  &ssi3
  59         &src4                           &ssi4
  60         &src5   &ctu10                  &ssi5
  61         &src6   &ctu11                  &ssi6
  62         &src7   &ctu12                  &ssi7
  63         &src8   &ctu13                  &ssi8
  64         &src9                           &ssi9
  65
  66 =============================================
  67 * SRC (Sampling Rate Converter)
  68 =============================================
  69
  70  [xx]Hz        [yy]Hz
  71  ------> [SRC] ------>
  72
  73 SRC can convert [xx]Hz to [yy]Hz. Then, it has below 2 modes
  74
  75  Asynchronous mode:     input data / output data are based on different clocks.
  76                         you can use this mode on Playback / Capture
  77  Synchronous mode:      input data / output data are based on same clocks.
  78                         This mode will be used if system doesn't have its input clock,
  79                         for example digital TV case.
  80                         you can use this mode on Playback
  81
  82 ------------------
  83 **     Asynchronous mode
  84 ------------------
  85
  86 You need to use "renesas,rsrc-card" sound card for it.
  87 example)
  88
  89         sound {
  90                 compatible = "renesas,rsrc-card";
  91                 ...
  92                 /*
  93                  * SRC Asynchronous mode setting
  94                  * Playback:
  95                  * All input data will be converted to 48kHz
  96                  * Capture:
  97                  * Inputed 48kHz data will be converted to
  98                  * system specified Hz
  99                  */
 100                 convert-rate = <48000>;
 101                 ...
 102                 cpu {
 103                         sound-dai = <&rcar_sound>;
 104                 };
 105                 codec {
 106                         ...
 107                 };
 108         };
 109
 110 ------------------
 111 **     Synchronous mode
 112 ------------------
 113
 114         > amixer set "SRC Out Rate" on
 115         > aplay xxxx.wav
 116         > amixer set "SRC Out Rate" 48000
 117         > amixer set "SRC Out Rate" 44100
 118
 119 =============================================
 120 * CTU (Channel Transfer Unit)
 121 =============================================
 122
 123  [xx]ch        [yy]ch
 124  ------> [CTU] -------->
 125
 126 CTU can convert [xx]ch to [yy]ch, or exchange outputed channel.
 127 CTU conversion needs matrix settings.
 128 For more detail information, see below
 129
 130         Renesas R-Car datasheet
 131          - Sampling Rate Converter Unit (SCU)
 132           - SCU Operation
 133            - CMD Block
 134             - Functional Blocks in CMD
 135
 136         Renesas R-Car datasheet
 137          - Sampling Rate Converter Unit (SCU)
 138           - Register Description
 139            - CTUn Scale Value exx Register (CTUn_SVxxR)
 140
 141         ${LINUX}/sound/soc/sh/rcar/ctu.c
 142          - comment of header
 143
 144 You need to use "renesas,rsrc-card" sound card for it.
 145 example)
 146
 147         sound {
 148                 compatible = "renesas,rsrc-card";
 149                 ...
 150                 /*
 151                  * CTU setting
 152                  * All input data will be converted to 2ch
 153                  * as output data
 154                  */
 155                 convert-channels = <2>;
 156                 ...
 157                 cpu {
 158                         sound-dai = <&rcar_sound>;
 159                 };
 160                 codec {
 161                         ...
 162                 };
 163         };
 164
 165 Ex) Exchange output channel
 166  Input -> Output
 167   1ch  ->  0ch
 168   0ch  ->  1ch
 169
 170   example of using matrix
 171         output 0ch = (input 0ch x 0) + (input 1ch x 1)
 172         output 1ch = (input 0ch x 1) + (input 1ch x 0)
 173
 174         amixer set "CTU Reset" on
 175         amixer set "CTU Pass" 9,10
 176         amixer set "CTU SV0" 0,4194304
 177         amixer set "CTU SV1" 4194304,0
 178
 179  example of changing connection
 180         amixer set "CTU Reset" on
 181         amixer set "CTU Pass" 2,1
 182
 183 =============================================
 184 * MIX (Mixer)
 185 =============================================
 186
 187 MIX merges 2 sounds path. You can see 2 sound interface on system,
 188 and these sounds will be merged by MIX.
 189
 190         aplay -D plughw:0,0 xxxx.wav &
 191         aplay -D plughw:0,1 yyyy.wav
 192
 193 You need to use "renesas,rsrc-card" sound card for it.
 194 Ex)
 195         [MEM] -> [SRC1] -> [CTU02] -+-> [MIX0] -> [DVC0] -> [SSI0]
 196                                     |
 197         [MEM] -> [SRC2] -> [CTU03] -+
 198
 199         sound {
 200                 compatible = "renesas,rsrc-card";
 201                 ...
 202                 cpu@0 {
 203                         sound-dai = <&rcar_sound 0>;
 204                 };
 205                 cpu@1 {
 206                         sound-dai = <&rcar_sound 1>;
 207                 };
 208                 codec {
 209                         ...
 210                 };
 211         };
 212
 213         &rcar_sound {
 214                 ...
 215                 rcar_sound,dai {
 216                         dai0 {
 217                                 playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>;
 218                         };
 219                         dai1 {
 220                                 playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
 221                         };
 222                 };
 223         };
 224
 225 =============================================
 226 * DVC (Digital Volume and Mute Function)
 227 =============================================
 228
 229 DVC controls Playback/Capture volume.
 230
 231 Playback Volume
 232         amixer set "DVC Out" 100%
 233
 234 Capture Volume
 235         amixer set "DVC In" 100%
 236
 237 Playback Mute
 238         amixer set "DVC Out Mute" on
 239
 240 Capture Mute
 241         amixer set "DVC In Mute" on
 242
 243 Volume Ramp
 244         amixer set "DVC Out Ramp Up Rate"   "0.125 dB/64 steps"
 245         amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps"
 246         amixer set "DVC Out Ramp" on
 247         aplay xxx.wav &
 248         amixer set "DVC Out"  80%  // Volume Down
 249         amixer set "DVC Out" 100%  // Volume Up
 250
 251 =============================================
 252 * SSIU (Serial Sound Interface Unit)
 253 =============================================
 254
 255 There is no DT settings for SSIU, because SSIU will be automatically
 256 selected via SSI.
 257 SSIU can avoid some under/over run error, because it has some buffer.
 258 But you can't use it if SSI was PIO mode.
 259 In DMA mode, you can select not to use SSIU by using "no-busif" on DT.
 260
 261         &ssi0 {
 262                 no-busif;
 263         };
 264
 265 =============================================
 266 * SSI (Serial Sound Interface)
 267 =============================================
 268
 269 **  PIO mode
 270
 271 You can use PIO mode which is for connection check by using.
 272 Note: The system will drop non-SSI modules in PIO mode
 273 even though if DT is selecting other modules.
 274
 275         &ssi0 {
 276                 pio-transfer
 277         };
 278
 279 ** DMA mode without SSIU
 280
 281 You can use DMA without SSIU.
 282 Note: under/over run, or noise are likely to occur
 283
 284         &ssi0 {
 285                 no-busif;
 286         };
 287
 288 ** PIN sharing
 289
 290 Each SSI can share WS pin. It is based on platform.
 291 This is example if SSI1 want to share WS pin with SSI0
 292
 293         &ssi1 {
 294                 shared-pin;
 295         };
 296
 297 ** Multi-SSI
 298
 299 You can use Multi-SSI.
 300 This is example of SSI0/SSI1/SSI2 (= for 6ch)
 301
 302         &rcar_sound {
 303                 ...
 304                 rcar_sound,dai {
 305                         dai0 {
 306                                 playback = <&ssi0 &ssi1 &ssi2 &src0 &dvc0>;
 307                         };
 308                 };
 309         };
 310
 311 ** TDM-SSI
 312
 313 You can use TDM with SSI.
 314 This is example of TDM 6ch.
 315 Driver can automatically switches TDM <-> stereo mode in this case.
 316
 317         rsnd_tdm: sound {
 318                 compatible = "simple-audio-card";
 319                 ...
 320                 simple-audio-card,cpu {
 321                         /* system can use TDM 6ch */
 322                         dai-tdm-slot-num = <6>;
 323                         sound-dai = <&rcar_sound>;
 324                 };
 325                 simple-audio-card,codec {
 326                         ...
 327                 };
 328         };
 329
 330
 331 =============================================
 332 Required properties:
 333 =============================================
 334
 335 - compatible                    : "renesas,rcar_sound-<soctype>", fallbacks
 336                                   "renesas,rcar_sound-gen1" if generation1, and
 337                                   "renesas,rcar_sound-gen2" if generation2
 338                                   "renesas,rcar_sound-gen3" if generation3
 339                                   Examples with soctypes are:
 340                                     - "renesas,rcar_sound-r8a7778" (R-Car M1A)
 341                                     - "renesas,rcar_sound-r8a7779" (R-Car H1)
 342                                     - "renesas,rcar_sound-r8a7790" (R-Car H2)
 343                                     - "renesas,rcar_sound-r8a7791" (R-Car M2-W)
 344                                     - "renesas,rcar_sound-r8a7793" (R-Car M2-N)
 345                                     - "renesas,rcar_sound-r8a7794" (R-Car E2)
 346                                     - "renesas,rcar_sound-r8a7795" (R-Car H3)
 347 - reg                           : Should contain the register physical address.
 348                                   required register is
 349                                    SRU/ADG/SSI      if generation1
 350                                    SRU/ADG/SSIU/SSI if generation2
 351 - rcar_sound,ssi                : Should contain SSI feature.
 352                                   The number of SSI subnode should be same as HW.
 353                                   see below for detail.
 354 - rcar_sound,src                : Should contain SRC feature.
 355                                   The number of SRC subnode should be same as HW.
 356                                   see below for detail.
 357 - rcar_sound,ctu                : Should contain CTU feature.
 358                                   The number of CTU subnode should be same as HW.
 359                                   see below for detail.
 360 - rcar_sound,mix                : Should contain MIX feature.
 361                                   The number of MIX subnode should be same as HW.
 362                                   see below for detail.
 363 - rcar_sound,dvc                : Should contain DVC feature.
 364                                   The number of DVC subnode should be same as HW.
 365                                   see below for detail.
 366 - rcar_sound,dai                : DAI contents.
 367                                   The number of DAI subnode should be same as HW.
 368                                   see below for detail.
 369 - #sound-dai-cells              : it must be 0 if your system is using single DAI
 370                                   it must be 1 if your system is using multi  DAI
 371
 372 Optional properties:
 373 - #clock-cells                  : it must be 0 if your system has audio_clkout
 374                                   it must be 1 if your system has audio_clkout0/1/2/3
 375 - clock-frequency               : for all audio_clkout0/1/2/3
 376 - clkout-lr-asynchronous        : boolean property. it indicates that audio_clkoutn
 377                                   is asynchronizes with lr-clock.
 378
 379 SSI subnode properties:
 380 - interrupts                    : Should contain SSI interrupt for PIO transfer
 381 - shared-pin                    : if shared clock pin
 382 - pio-transfer                  : use PIO transfer mode
 383 - no-busif                      : BUSIF is not ussed when [mem -> SSI] via DMA case
 384 - dma                           : Should contain Audio DMAC entry
 385 - dma-names                     : SSI  case "rx"  (=playback), "tx"  (=capture)
 386                                   SSIU case "rxu" (=playback), "txu" (=capture)
 387
 388 SRC subnode properties:
 389 - dma                           : Should contain Audio DMAC entry
 390 - dma-names                     : "rx" (=playback), "tx" (=capture)
 391
 392 DVC subnode properties:
 393 - dma                           : Should contain Audio DMAC entry
 394 - dma-names                     : "tx" (=playback/capture)
 395
 396 DAI subnode properties:
 397 - playback                      : list of playback modules
 398 - capture                       : list of capture  modules
 399
 400
 401 =============================================
 402 Example:
 403 =============================================
 404
 405 rcar_sound: sound@ec500000 {
 406         #sound-dai-cells = <1>;
 407         compatible = "renesas,rcar_sound-r8a7791", "renesas,rcar_sound-gen2";
 408         reg =   <0 0xec500000 0 0x1000>, /* SCU */
 409                 <0 0xec5a0000 0 0x100>,  /* ADG */
 410                 <0 0xec540000 0 0x1000>, /* SSIU */
 411                 <0 0xec541000 0 0x1280>, /* SSI */
 412                 <0 0xec740000 0 0x200>;  /* Audio DMAC peri peri*/
 413         reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
 414
 415         clocks = <&mstp10_clks R8A7790_CLK_SSI_ALL>,
 416                 <&mstp10_clks R8A7790_CLK_SSI9>, <&mstp10_clks R8A7790_CLK_SSI8>,
 417                 <&mstp10_clks R8A7790_CLK_SSI7>, <&mstp10_clks R8A7790_CLK_SSI6>,
 418                 <&mstp10_clks R8A7790_CLK_SSI5>, <&mstp10_clks R8A7790_CLK_SSI4>,
 419                 <&mstp10_clks R8A7790_CLK_SSI3>, <&mstp10_clks R8A7790_CLK_SSI2>,
 420                 <&mstp10_clks R8A7790_CLK_SSI1>, <&mstp10_clks R8A7790_CLK_SSI0>,
 421                 <&mstp10_clks R8A7790_CLK_SCU_SRC9>, <&mstp10_clks R8A7790_CLK_SCU_SRC8>,
 422                 <&mstp10_clks R8A7790_CLK_SCU_SRC7>, <&mstp10_clks R8A7790_CLK_SCU_SRC6>,
 423                 <&mstp10_clks R8A7790_CLK_SCU_SRC5>, <&mstp10_clks R8A7790_CLK_SCU_SRC4>,
 424                 <&mstp10_clks R8A7790_CLK_SCU_SRC3>, <&mstp10_clks R8A7790_CLK_SCU_SRC2>,
 425                 <&mstp10_clks R8A7790_CLK_SCU_SRC1>, <&mstp10_clks R8A7790_CLK_SCU_SRC0>,
 426                 <&mstp10_clks R8A7790_CLK_SCU_DVC0>, <&mstp10_clks R8A7790_CLK_SCU_DVC1>,
 427                 <&audio_clk_a>, <&audio_clk_b>, <&audio_clk_c>, <&m2_clk>;
 428         clock-names = "ssi-all",
 429                         "ssi.9", "ssi.8", "ssi.7", "ssi.6", "ssi.5",
 430                         "ssi.4", "ssi.3", "ssi.2", "ssi.1", "ssi.0",
 431                         "src.9", "src.8", "src.7", "src.6", "src.5",
 432                         "src.4", "src.3", "src.2", "src.1", "src.0",
 433                         "dvc.0", "dvc.1",
 434                         "clk_a", "clk_b", "clk_c", "clk_i";
 435
 436         rcar_sound,dvc {
 437                 dvc0: dvc@0 {
 438                         dmas = <&audma0 0xbc>;
 439                         dma-names = "tx";
 440                 };
 441                 dvc1: dvc@1 {
 442                         dmas = <&audma0 0xbe>;
 443                         dma-names = "tx";
 444                 };
 445         };
 446
 447         rcar_sound,mix {
 448                 mix0: mix@0 { };
 449                 mix1: mix@1 { };
 450         };
 451
 452         rcar_sound,ctu {
 453                 ctu00: ctu@0 { };
 454                 ctu01: ctu@1 { };
 455                 ctu02: ctu@2 { };
 456                 ctu03: ctu@3 { };
 457                 ctu10: ctu@4 { };
 458                 ctu11: ctu@5 { };
 459                 ctu12: ctu@6 { };
 460                 ctu13: ctu@7 { };
 461         };
 462
 463         rcar_sound,src {
 464                 src0: src@0 {
 465                         interrupts = <0 352 IRQ_TYPE_LEVEL_HIGH>;
 466                         dmas = <&audma0 0x85>, <&audma1 0x9a>;
 467                         dma-names = "rx", "tx";
 468                 };
 469                 src1: src@1 {
 470                         interrupts = <0 353 IRQ_TYPE_LEVEL_HIGH>;
 471                         dmas = <&audma0 0x87>, <&audma1 0x9c>;
 472                         dma-names = "rx", "tx";
 473                 };
 474                 src2: src@2 {
 475                         interrupts = <0 354 IRQ_TYPE_LEVEL_HIGH>;
 476                         dmas = <&audma0 0x89>, <&audma1 0x9e>;
 477                         dma-names = "rx", "tx";
 478                 };
 479                 src3: src@3 {
 480                         interrupts = <0 355 IRQ_TYPE_LEVEL_HIGH>;
 481                         dmas = <&audma0 0x8b>, <&audma1 0xa0>;
 482                         dma-names = "rx", "tx";
 483                 };
 484                 src4: src@4 {
 485                         interrupts = <0 356 IRQ_TYPE_LEVEL_HIGH>;
 486                         dmas = <&audma0 0x8d>, <&audma1 0xb0>;
 487                         dma-names = "rx", "tx";
 488                 };
 489                 src5: src@5 {
 490                         interrupts = <0 357 IRQ_TYPE_LEVEL_HIGH>;
 491                         dmas = <&audma0 0x8f>, <&audma1 0xb2>;
 492                         dma-names = "rx", "tx";
 493                 };
 494                 src6: src@6 {
 495                         interrupts = <0 358 IRQ_TYPE_LEVEL_HIGH>;
 496                         dmas = <&audma0 0x91>, <&audma1 0xb4>;
 497                         dma-names = "rx", "tx";
 498                 };
 499                 src7: src@7 {
 500                         interrupts = <0 359 IRQ_TYPE_LEVEL_HIGH>;
 501                         dmas = <&audma0 0x93>, <&audma1 0xb6>;
 502                         dma-names = "rx", "tx";
 503                 };
 504                 src8: src@8 {
 505                         interrupts = <0 360 IRQ_TYPE_LEVEL_HIGH>;
 506                         dmas = <&audma0 0x95>, <&audma1 0xb8>;
 507                         dma-names = "rx", "tx";
 508                 };
 509                 src9: src@9 {
 510                         interrupts = <0 361 IRQ_TYPE_LEVEL_HIGH>;
 511                         dmas = <&audma0 0x97>, <&audma1 0xba>;
 512                         dma-names = "rx", "tx";
 513                 };
 514         };
 515
 516         rcar_sound,ssi {
 517                 ssi0: ssi@0 {
 518                         interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;
 519                         dmas = <&audma0 0x01>, <&audma1 0x02>, <&audma0 0x15>, <&audma1 0x16>;
 520                         dma-names = "rx", "tx", "rxu", "txu";
 521                 };
 522                 ssi1: ssi@1 {
 523                         interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;
 524                         dmas = <&audma0 0x03>, <&audma1 0x04>, <&audma0 0x49>, <&audma1 0x4a>;
 525                         dma-names = "rx", "tx", "rxu", "txu";
 526                 };
 527                 ssi2: ssi@2 {
 528                         interrupts = <0 372 IRQ_TYPE_LEVEL_HIGH>;
 529                         dmas = <&audma0 0x05>, <&audma1 0x06>, <&audma0 0x63>, <&audma1 0x64>;
 530                         dma-names = "rx", "tx", "rxu", "txu";
 531                 };
 532                 ssi3: ssi@3 {
 533                         interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
 534                         dmas = <&audma0 0x07>, <&audma1 0x08>, <&audma0 0x6f>, <&audma1 0x70>;
 535                         dma-names = "rx", "tx", "rxu", "txu";
 536                 };
 537                 ssi4: ssi@4 {
 538                         interrupts = <0 374 IRQ_TYPE_LEVEL_HIGH>;
 539                         dmas = <&audma0 0x09>, <&audma1 0x0a>, <&audma0 0x71>, <&audma1 0x72>;
 540                         dma-names = "rx", "tx", "rxu", "txu";
 541                 };
 542                 ssi5: ssi@5 {
 543                         interrupts = <0 375 IRQ_TYPE_LEVEL_HIGH>;
 544                         dmas = <&audma0 0x0b>, <&audma1 0x0c>, <&audma0 0x73>, <&audma1 0x74>;
 545                         dma-names = "rx", "tx", "rxu", "txu";
 546                 };
 547                 ssi6: ssi@6 {
 548                         interrupts = <0 376 IRQ_TYPE_LEVEL_HIGH>;
 549                         dmas = <&audma0 0x0d>, <&audma1 0x0e>, <&audma0 0x75>, <&audma1 0x76>;
 550                         dma-names = "rx", "tx", "rxu", "txu";
 551                 };
 552                 ssi7: ssi@7 {
 553                         interrupts = <0 377 IRQ_TYPE_LEVEL_HIGH>;
 554                         dmas = <&audma0 0x0f>, <&audma1 0x10>, <&audma0 0x79>, <&audma1 0x7a>;
 555                         dma-names = "rx", "tx", "rxu", "txu";
 556                 };
 557                 ssi8: ssi@8 {
 558                         interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;
 559                         dmas = <&audma0 0x11>, <&audma1 0x12>, <&audma0 0x7b>, <&audma1 0x7c>;
 560                         dma-names = "rx", "tx", "rxu", "txu";
 561                 };
 562                 ssi9: ssi@9 {
 563                         interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;
 564                         dmas = <&audma0 0x13>, <&audma1 0x14>, <&audma0 0x7d>, <&audma1 0x7e>;
 565                         dma-names = "rx", "tx", "rxu", "txu";
 566                 };
 567         };
 568
 569         rcar_sound,dai {
 570                 dai0 {
 571                         playback = <&ssi5 &src5>;
 572                         capture  = <&ssi6>;
 573                 };
 574                 dai1 {
 575                         playback = <&ssi3>;
 576                 };
 577                 dai2 {
 578                         capture  = <&ssi4>;
 579                 };
 580                 dai3 {
 581                         playback = <&ssi7>;
 582                 };
 583                 dai4 {
 584                         capture  = <&ssi8>;
 585                 };
 586         };
 587 };
 588
 589 =============================================
 590 Example: simple sound card
 591 =============================================
 592
 593         rsnd_ak4643: sound {
 594                 compatible = "simple-audio-card";
 595
 596                 simple-audio-card,format = "left_j";
 597                 simple-audio-card,bitclock-master = <&sndcodec>;
 598                 simple-audio-card,frame-master = <&sndcodec>;
 599
 600                 sndcpu: simple-audio-card,cpu {
 601                         sound-dai = <&rcar_sound>;
 602                 };
 603
 604                 sndcodec: simple-audio-card,codec {
 605                         sound-dai = <&ak4643>;
 606                         clocks = <&audio_clock>;
 607                 };
 608         };
 609
 610 &rcar_sound {
 611         pinctrl-0 = <&sound_pins &sound_clk_pins>;
 612         pinctrl-names = "default";
 613
 614         /* Single DAI */
 615         #sound-dai-cells = <0>;
 616
 617         status = "okay";
 618
 619         rcar_sound,dai {
 620                 dai0 {
 621                         playback = <&ssi0 &src2 &dvc0>;
 622                         capture  = <&ssi1 &src3 &dvc1>;
 623                 };
 624         };
 625 };
 626
 627 &ssi1 {
 628         shared-pin;
 629 };
 630
 631 =============================================
 632 Example: simple sound card for TDM
 633 =============================================
 634
 635         rsnd_tdm: sound {
 636                 compatible = "simple-audio-card";
 637
 638                 simple-audio-card,format = "left_j";
 639                 simple-audio-card,bitclock-master = <&sndcodec>;
 640                 simple-audio-card,frame-master = <&sndcodec>;
 641
 642                 sndcpu: simple-audio-card,cpu {
 643                         sound-dai = <&rcar_sound>;
 644                         dai-tdm-slot-num = <6>;
 645                 };
 646
 647                 sndcodec: simple-audio-card,codec {
 648                         sound-dai = <&xxx>;
 649                 };
 650         };
 651
 652 =============================================
 653 Example: simple sound card for Multi channel
 654 =============================================
 655
 656 &rcar_sound {
 657         pinctrl-0 = <&sound_pins &sound_clk_pins>;
 658         pinctrl-names = "default";
 659
 660         /* Single DAI */
 661         #sound-dai-cells = <0>;
 662
 663         status = "okay";
 664
 665         rcar_sound,dai {
 666                 dai0 {
 667                         playback = <&ssi0 &ssi1 &ssi2 &src0 &dvc0>;
 668                 };
 669         };
 670 };