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         &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 "simple-scu-audio-card" sound card for it.
  87 example)
  88
  89         sound {
  90                 compatible = "simple-scu-audio-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                 simple-audio-card,convert-rate = <48000>;
 101                 ...
 102                 simple-audio-card,cpu {
 103                         sound-dai = <&rcar_sound>;
 104                 };
 105                 simple-audio-card,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 "simple-scu-audio-card" sound card for it.
 145 example)
 146
 147         sound {
 148                 compatible = "simple-scu-audio-card";
 149                 ...
 150                 /*
 151                  * CTU setting
 152                  * All input data will be converted to 2ch
 153                  * as output data
 154                  */
 155                 simple-audio-card,convert-channels = <2>;
 156                 ...
 157                 simple-audio-card,cpu {
 158                         sound-dai = <&rcar_sound>;
 159                 };
 160                 simple-audio-card,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 "simple-scu-audio-card" sound card for it.
 194 Ex)
 195         [MEM] -> [SRC1] -> [CTU02] -+-> [MIX0] -> [DVC0] -> [SSI0]
 196                                     |
 197         [MEM] -> [SRC2] -> [CTU03] -+
 198
 199         sound {
 200                 #address-cells = <1>;
 201                 #size-cells = <0>;
 202
 203                 compatible = "simple-scu-audio-card";
 204                 ...
 205                 simple-audio-card,cpu@0 {
 206                         reg = <0>;
 207                         sound-dai = <&rcar_sound 0>;
 208                 };
 209                 simple-audio-card,cpu@1 {
 210                         reg = <1>;
 211                         sound-dai = <&rcar_sound 1>;
 212                 };
 213                 simple-audio-card,codec {
 214                         ...
 215                 };
 216         };
 217
 218         &rcar_sound {
 219                 ...
 220                 rcar_sound,dai {
 221                         dai0 {
 222                                 playback = <&src1 &ctu02 &mix0 &dvc0 &ssi0>;
 223                         };
 224                         dai1 {
 225                                 playback = <&src2 &ctu03 &mix0 &dvc0 &ssi0>;
 226                         };
 227                 };
 228         };
 229
 230 =============================================
 231 * DVC (Digital Volume and Mute Function)
 232 =============================================
 233
 234 DVC controls Playback/Capture volume.
 235
 236 Playback Volume
 237         amixer set "DVC Out" 100%
 238
 239 Capture Volume
 240         amixer set "DVC In" 100%
 241
 242 Playback Mute
 243         amixer set "DVC Out Mute" on
 244
 245 Capture Mute
 246         amixer set "DVC In Mute" on
 247
 248 Volume Ramp
 249         amixer set "DVC Out Ramp Up Rate"   "0.125 dB/64 steps"
 250         amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps"
 251         amixer set "DVC Out Ramp" on
 252         aplay xxx.wav &
 253         amixer set "DVC Out"  80%  // Volume Down
 254         amixer set "DVC Out" 100%  // Volume Up
 255
 256 =============================================
 257 * SSIU (Serial Sound Interface Unit)
 258 =============================================
 259
 260 There is no DT settings for SSIU, because SSIU will be automatically
 261 selected via SSI.
 262 SSIU can avoid some under/over run error, because it has some buffer.
 263 But you can't use it if SSI was PIO mode.
 264 In DMA mode, you can select not to use SSIU by using "no-busif" on DT.
 265
 266         &ssi0 {
 267                 no-busif;
 268         };
 269
 270 =============================================
 271 * SSI (Serial Sound Interface)
 272 =============================================
 273
 274 **  PIO mode
 275
 276 You can use PIO mode which is for connection check by using.
 277 Note: The system will drop non-SSI modules in PIO mode
 278 even though if DT is selecting other modules.
 279
 280         &ssi0 {
 281                 pio-transfer
 282         };
 283
 284 ** DMA mode without SSIU
 285
 286 You can use DMA without SSIU.
 287 Note: under/over run, or noise are likely to occur
 288
 289         &ssi0 {
 290                 no-busif;
 291         };
 292
 293 ** PIN sharing
 294
 295 Each SSI can share WS pin. It is based on platform.
 296 This is example if SSI1 want to share WS pin with SSI0
 297
 298         &ssi1 {
 299                 shared-pin;
 300         };
 301
 302 ** Multi-SSI
 303
 304 You can use Multi-SSI.
 305 This is example of SSI0/SSI1/SSI2 (= for 6ch)
 306
 307         &rcar_sound {
 308                 ...
 309                 rcar_sound,dai {
 310                         dai0 {
 311                                 playback = <&ssi0 &ssi1 &ssi2 &src0 &dvc0>;
 312                         };
 313                 };
 314         };
 315
 316 ** TDM-SSI
 317
 318 You can use TDM with SSI.
 319 This is example of TDM 6ch.
 320 Driver can automatically switches TDM <-> stereo mode in this case.
 321
 322         rsnd_tdm: sound {
 323                 compatible = "simple-audio-card";
 324                 ...
 325                 simple-audio-card,cpu {
 326                         /* system can use TDM 6ch */
 327                         dai-tdm-slot-num = <6>;
 328                         sound-dai = <&rcar_sound>;
 329                 };
 330                 simple-audio-card,codec {
 331                         ...
 332                 };
 333         };
 334
 335
 336 =============================================
 337 Required properties:
 338 =============================================
 339
 340 - compatible                    : "renesas,rcar_sound-<soctype>", fallbacks
 341                                   "renesas,rcar_sound-gen1" if generation1, and
 342                                   "renesas,rcar_sound-gen2" if generation2 (or RZ/G1)
 343                                   "renesas,rcar_sound-gen3" if generation3
 344                                   Examples with soctypes are:
 345                                     - "renesas,rcar_sound-r8a7743" (RZ/G1M)
 346                                     - "renesas,rcar_sound-r8a7745" (RZ/G1E)
 347                                     - "renesas,rcar_sound-r8a7778" (R-Car M1A)
 348                                     - "renesas,rcar_sound-r8a7779" (R-Car H1)
 349                                     - "renesas,rcar_sound-r8a7790" (R-Car H2)
 350                                     - "renesas,rcar_sound-r8a7791" (R-Car M2-W)
 351                                     - "renesas,rcar_sound-r8a7793" (R-Car M2-N)
 352                                     - "renesas,rcar_sound-r8a7794" (R-Car E2)
 353                                     - "renesas,rcar_sound-r8a7795" (R-Car H3)
 354 - reg                           : Should contain the register physical address.
 355                                   required register is
 356                                    SRU/ADG/SSI      if generation1
 357                                    SRU/ADG/SSIU/SSI if generation2
 358 - rcar_sound,ssi                : Should contain SSI feature.
 359                                   The number of SSI subnode should be same as HW.
 360                                   see below for detail.
 361 - rcar_sound,src                : Should contain SRC feature.
 362                                   The number of SRC subnode should be same as HW.
 363                                   see below for detail.
 364 - rcar_sound,ctu                : Should contain CTU feature.
 365                                   The number of CTU subnode should be same as HW.
 366                                   see below for detail.
 367 - rcar_sound,mix                : Should contain MIX feature.
 368                                   The number of MIX subnode should be same as HW.
 369                                   see below for detail.
 370 - rcar_sound,dvc                : Should contain DVC feature.
 371                                   The number of DVC subnode should be same as HW.
 372                                   see below for detail.
 373 - rcar_sound,dai                : DAI contents.
 374                                   The number of DAI subnode should be same as HW.
 375                                   see below for detail.
 376 - #sound-dai-cells              : it must be 0 if your system is using single DAI
 377                                   it must be 1 if your system is using multi  DAI
 378 - clocks                        : References to SSI/SRC/MIX/CTU/DVC/AUDIO_CLK clocks.
 379 - clock-names                   : List of necessary clock names.
 380                                   "ssi-all", "ssi.X", "src.X", "mix.X", "ctu.X",
 381                                   "dvc.X", "clk_a", "clk_b", "clk_c", "clk_i"
 382
 383 Optional properties:
 384 - #clock-cells                  : it must be 0 if your system has audio_clkout
 385                                   it must be 1 if your system has audio_clkout0/1/2/3
 386 - clock-frequency               : for all audio_clkout0/1/2/3
 387 - clkout-lr-asynchronous        : boolean property. it indicates that audio_clkoutn
 388                                   is asynchronizes with lr-clock.
 389 - resets                        : References to SSI resets.
 390 - reset-names                   : List of valid reset names.
 391                                   "ssi-all", "ssi.X"
 392
 393 SSI subnode properties:
 394 - interrupts                    : Should contain SSI interrupt for PIO transfer
 395 - shared-pin                    : if shared clock pin
 396 - pio-transfer                  : use PIO transfer mode
 397 - no-busif                      : BUSIF is not ussed when [mem -> SSI] via DMA case
 398 - dma                           : Should contain Audio DMAC entry
 399 - dma-names                     : SSI  case "rx"  (=playback), "tx"  (=capture)
 400                                   SSIU case "rxu" (=playback), "txu" (=capture)
 401
 402 SRC subnode properties:
 403 - dma                           : Should contain Audio DMAC entry
 404 - dma-names                     : "rx" (=playback), "tx" (=capture)
 405
 406 DVC subnode properties:
 407 - dma                           : Should contain Audio DMAC entry
 408 - dma-names                     : "tx" (=playback/capture)
 409
 410 DAI subnode properties:
 411 - playback                      : list of playback modules
 412 - capture                       : list of capture  modules
 413
 414
 415 =============================================
 416 Example:
 417 =============================================
 418
 419 rcar_sound: sound@ec500000 {
 420         #sound-dai-cells = <1>;
 421         compatible = "renesas,rcar_sound-r8a7791", "renesas,rcar_sound-gen2";
 422         reg =   <0 0xec500000 0 0x1000>, /* SCU */
 423                 <0 0xec5a0000 0 0x100>,  /* ADG */
 424                 <0 0xec540000 0 0x1000>, /* SSIU */
 425                 <0 0xec541000 0 0x1280>, /* SSI */
 426                 <0 0xec740000 0 0x200>;  /* Audio DMAC peri peri*/
 427         reg-names = "scu", "adg", "ssiu", "ssi", "audmapp";
 428
 429         clocks = <&mstp10_clks R8A7790_CLK_SSI_ALL>,
 430                 <&mstp10_clks R8A7790_CLK_SSI9>, <&mstp10_clks R8A7790_CLK_SSI8>,
 431                 <&mstp10_clks R8A7790_CLK_SSI7>, <&mstp10_clks R8A7790_CLK_SSI6>,
 432                 <&mstp10_clks R8A7790_CLK_SSI5>, <&mstp10_clks R8A7790_CLK_SSI4>,
 433                 <&mstp10_clks R8A7790_CLK_SSI3>, <&mstp10_clks R8A7790_CLK_SSI2>,
 434                 <&mstp10_clks R8A7790_CLK_SSI1>, <&mstp10_clks R8A7790_CLK_SSI0>,
 435                 <&mstp10_clks R8A7790_CLK_SCU_SRC9>, <&mstp10_clks R8A7790_CLK_SCU_SRC8>,
 436                 <&mstp10_clks R8A7790_CLK_SCU_SRC7>, <&mstp10_clks R8A7790_CLK_SCU_SRC6>,
 437                 <&mstp10_clks R8A7790_CLK_SCU_SRC5>, <&mstp10_clks R8A7790_CLK_SCU_SRC4>,
 438                 <&mstp10_clks R8A7790_CLK_SCU_SRC3>, <&mstp10_clks R8A7790_CLK_SCU_SRC2>,
 439                 <&mstp10_clks R8A7790_CLK_SCU_SRC1>, <&mstp10_clks R8A7790_CLK_SCU_SRC0>,
 440                 <&mstp10_clks R8A7790_CLK_SCU_DVC0>, <&mstp10_clks R8A7790_CLK_SCU_DVC1>,
 441                 <&audio_clk_a>, <&audio_clk_b>, <&audio_clk_c>, <&m2_clk>;
 442         clock-names = "ssi-all",
 443                         "ssi.9", "ssi.8", "ssi.7", "ssi.6", "ssi.5",
 444                         "ssi.4", "ssi.3", "ssi.2", "ssi.1", "ssi.0",
 445                         "src.9", "src.8", "src.7", "src.6", "src.5",
 446                         "src.4", "src.3", "src.2", "src.1", "src.0",
 447                         "dvc.0", "dvc.1",
 448                         "clk_a", "clk_b", "clk_c", "clk_i";
 449
 450         rcar_sound,dvc {
 451                 dvc0: dvc-0 {
 452                         dmas = <&audma0 0xbc>;
 453                         dma-names = "tx";
 454                 };
 455                 dvc1: dvc-1 {
 456                         dmas = <&audma0 0xbe>;
 457                         dma-names = "tx";
 458                 };
 459         };
 460
 461         rcar_sound,mix {
 462                 mix0: mix-0 { };
 463                 mix1: mix-1 { };
 464         };
 465
 466         rcar_sound,ctu {
 467                 ctu00: ctu-0 { };
 468                 ctu01: ctu-1 { };
 469                 ctu02: ctu-2 { };
 470                 ctu03: ctu-3 { };
 471                 ctu10: ctu-4 { };
 472                 ctu11: ctu-5 { };
 473                 ctu12: ctu-6 { };
 474                 ctu13: ctu-7 { };
 475         };
 476
 477         rcar_sound,src {
 478                 src0: src-0 {
 479                         interrupts = <0 352 IRQ_TYPE_LEVEL_HIGH>;
 480                         dmas = <&audma0 0x85>, <&audma1 0x9a>;
 481                         dma-names = "rx", "tx";
 482                 };
 483                 src1: src-1 {
 484                         interrupts = <0 353 IRQ_TYPE_LEVEL_HIGH>;
 485                         dmas = <&audma0 0x87>, <&audma1 0x9c>;
 486                         dma-names = "rx", "tx";
 487                 };
 488                 src2: src-2 {
 489                         interrupts = <0 354 IRQ_TYPE_LEVEL_HIGH>;
 490                         dmas = <&audma0 0x89>, <&audma1 0x9e>;
 491                         dma-names = "rx", "tx";
 492                 };
 493                 src3: src-3 {
 494                         interrupts = <0 355 IRQ_TYPE_LEVEL_HIGH>;
 495                         dmas = <&audma0 0x8b>, <&audma1 0xa0>;
 496                         dma-names = "rx", "tx";
 497                 };
 498                 src4: src-4 {
 499                         interrupts = <0 356 IRQ_TYPE_LEVEL_HIGH>;
 500                         dmas = <&audma0 0x8d>, <&audma1 0xb0>;
 501                         dma-names = "rx", "tx";
 502                 };
 503                 src5: src-5 {
 504                         interrupts = <0 357 IRQ_TYPE_LEVEL_HIGH>;
 505                         dmas = <&audma0 0x8f>, <&audma1 0xb2>;
 506                         dma-names = "rx", "tx";
 507                 };
 508                 src6: src-6 {
 509                         interrupts = <0 358 IRQ_TYPE_LEVEL_HIGH>;
 510                         dmas = <&audma0 0x91>, <&audma1 0xb4>;
 511                         dma-names = "rx", "tx";
 512                 };
 513                 src7: src-7 {
 514                         interrupts = <0 359 IRQ_TYPE_LEVEL_HIGH>;
 515                         dmas = <&audma0 0x93>, <&audma1 0xb6>;
 516                         dma-names = "rx", "tx";
 517                 };
 518                 src8: src-8 {
 519                         interrupts = <0 360 IRQ_TYPE_LEVEL_HIGH>;
 520                         dmas = <&audma0 0x95>, <&audma1 0xb8>;
 521                         dma-names = "rx", "tx";
 522                 };
 523                 src9: src-9 {
 524                         interrupts = <0 361 IRQ_TYPE_LEVEL_HIGH>;
 525                         dmas = <&audma0 0x97>, <&audma1 0xba>;
 526                         dma-names = "rx", "tx";
 527                 };
 528         };
 529
 530         rcar_sound,ssi {
 531                 ssi0: ssi-0 {
 532                         interrupts = <0 370 IRQ_TYPE_LEVEL_HIGH>;
 533                         dmas = <&audma0 0x01>, <&audma1 0x02>, <&audma0 0x15>, <&audma1 0x16>;
 534                         dma-names = "rx", "tx", "rxu", "txu";
 535                 };
 536                 ssi1: ssi-1 {
 537                         interrupts = <0 371 IRQ_TYPE_LEVEL_HIGH>;
 538                         dmas = <&audma0 0x03>, <&audma1 0x04>, <&audma0 0x49>, <&audma1 0x4a>;
 539                         dma-names = "rx", "tx", "rxu", "txu";
 540                 };
 541                 ssi2: ssi-2 {
 542                         interrupts = <0 372 IRQ_TYPE_LEVEL_HIGH>;
 543                         dmas = <&audma0 0x05>, <&audma1 0x06>, <&audma0 0x63>, <&audma1 0x64>;
 544                         dma-names = "rx", "tx", "rxu", "txu";
 545                 };
 546                 ssi3: ssi-3 {
 547                         interrupts = <0 373 IRQ_TYPE_LEVEL_HIGH>;
 548                         dmas = <&audma0 0x07>, <&audma1 0x08>, <&audma0 0x6f>, <&audma1 0x70>;
 549                         dma-names = "rx", "tx", "rxu", "txu";
 550                 };
 551                 ssi4: ssi-4 {
 552                         interrupts = <0 374 IRQ_TYPE_LEVEL_HIGH>;
 553                         dmas = <&audma0 0x09>, <&audma1 0x0a>, <&audma0 0x71>, <&audma1 0x72>;
 554                         dma-names = "rx", "tx", "rxu", "txu";
 555                 };
 556                 ssi5: ssi-5 {
 557                         interrupts = <0 375 IRQ_TYPE_LEVEL_HIGH>;
 558                         dmas = <&audma0 0x0b>, <&audma1 0x0c>, <&audma0 0x73>, <&audma1 0x74>;
 559                         dma-names = "rx", "tx", "rxu", "txu";
 560                 };
 561                 ssi6: ssi-6 {
 562                         interrupts = <0 376 IRQ_TYPE_LEVEL_HIGH>;
 563                         dmas = <&audma0 0x0d>, <&audma1 0x0e>, <&audma0 0x75>, <&audma1 0x76>;
 564                         dma-names = "rx", "tx", "rxu", "txu";
 565                 };
 566                 ssi7: ssi-7 {
 567                         interrupts = <0 377 IRQ_TYPE_LEVEL_HIGH>;
 568                         dmas = <&audma0 0x0f>, <&audma1 0x10>, <&audma0 0x79>, <&audma1 0x7a>;
 569                         dma-names = "rx", "tx", "rxu", "txu";
 570                 };
 571                 ssi8: ssi-8 {
 572                         interrupts = <0 378 IRQ_TYPE_LEVEL_HIGH>;
 573                         dmas = <&audma0 0x11>, <&audma1 0x12>, <&audma0 0x7b>, <&audma1 0x7c>;
 574                         dma-names = "rx", "tx", "rxu", "txu";
 575                 };
 576                 ssi9: ssi-9 {
 577                         interrupts = <0 379 IRQ_TYPE_LEVEL_HIGH>;
 578                         dmas = <&audma0 0x13>, <&audma1 0x14>, <&audma0 0x7d>, <&audma1 0x7e>;
 579                         dma-names = "rx", "tx", "rxu", "txu";
 580                 };
 581         };
 582
 583         rcar_sound,dai {
 584                 dai0 {
 585                         playback = <&ssi5 &src5>;
 586                         capture  = <&ssi6>;
 587                 };
 588                 dai1 {
 589                         playback = <&ssi3>;
 590                 };
 591                 dai2 {
 592                         capture  = <&ssi4>;
 593                 };
 594                 dai3 {
 595                         playback = <&ssi7>;
 596                 };
 597                 dai4 {
 598                         capture  = <&ssi8>;
 599                 };
 600         };
 601 };
 602
 603 =============================================
 604 Example: simple sound card
 605 =============================================
 606
 607         rsnd_ak4643: sound {
 608                 compatible = "simple-audio-card";
 609
 610                 simple-audio-card,format = "left_j";
 611                 simple-audio-card,bitclock-master = <&sndcodec>;
 612                 simple-audio-card,frame-master = <&sndcodec>;
 613
 614                 sndcpu: simple-audio-card,cpu {
 615                         sound-dai = <&rcar_sound>;
 616                 };
 617
 618                 sndcodec: simple-audio-card,codec {
 619                         sound-dai = <&ak4643>;
 620                         clocks = <&audio_clock>;
 621                 };
 622         };
 623
 624 &rcar_sound {
 625         pinctrl-0 = <&sound_pins &sound_clk_pins>;
 626         pinctrl-names = "default";
 627
 628         /* Single DAI */
 629         #sound-dai-cells = <0>;
 630
 631
 632         rcar_sound,dai {
 633                 dai0 {
 634                         playback = <&ssi0 &src2 &dvc0>;
 635                         capture  = <&ssi1 &src3 &dvc1>;
 636                 };
 637         };
 638 };
 639
 640 &ssi1 {
 641         shared-pin;
 642 };
 643
 644 =============================================
 645 Example: simple sound card for TDM
 646 =============================================
 647
 648         rsnd_tdm: sound {
 649                 compatible = "simple-audio-card";
 650
 651                 simple-audio-card,format = "left_j";
 652                 simple-audio-card,bitclock-master = <&sndcodec>;
 653                 simple-audio-card,frame-master = <&sndcodec>;
 654
 655                 sndcpu: simple-audio-card,cpu {
 656                         sound-dai = <&rcar_sound>;
 657                         dai-tdm-slot-num = <6>;
 658                 };
 659
 660                 sndcodec: simple-audio-card,codec {
 661                         sound-dai = <&xxx>;
 662                 };
 663         };
 664
 665 =============================================
 666 Example: simple sound card for Multi channel
 667 =============================================
 668
 669 &rcar_sound {
 670         pinctrl-0 = <&sound_pins &sound_clk_pins>;
 671         pinctrl-names = "default";
 672
 673         /* Single DAI */
 674         #sound-dai-cells = <0>;
 675
 676
 677         rcar_sound,dai {
 678                 dai0 {
 679                         playback = <&ssi0 &ssi1 &ssi2 &src0 &dvc0>;
 680                 };
 681         };
 682 };