Re: [PATCH v2] ASoC: dt-bindings: simple-card: switch to yaml base Documentation

On Fri, Feb 14, 2020 at 02:13:05PM +0900, Kuninori Morimoto wrote:

From: Kuninori Morimoto kuninori.morimoto.gx@renesas.com

This patch switches from .txt base to .yaml base Document.

Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com

v1 -> v2

• add missing setup

.../devicetree/bindings/sound/simple-card.txt | 351 ------------- .../bindings/sound/simple-card.yaml | 484 ++++++++++++++++++ 2 files changed, 484 insertions(+), 351 deletions(-) delete mode 100644 Documentation/devicetree/bindings/sound/simple-card.txt create mode 100644 Documentation/devicetree/bindings/sound/simple-card.yaml

diff --git a/Documentation/devicetree/bindings/sound/simple-card.txt b/Documentation/devicetree/bindings/sound/simple-card.txt deleted file mode 100644 index 79954cd6e37b..000000000000 --- a/Documentation/devicetree/bindings/sound/simple-card.txt +++ /dev/null @@ -1,351 +0,0 @@ -Simple-Card:

-Simple-Card specifies audio DAI connections of SoC <-> codec.

-Required properties:

-- compatible : "simple-audio-card"

-Optional properties:

-- simple-audio-card,name : User specified audio sound card name, one string

• 			  property.
  

-- simple-audio-card,widgets : Please refer to widgets.txt. -- simple-audio-card,routing : A list of the connections between audio components.

• 			  Each entry is a pair of strings, the first being the
  

• 			  connection's sink, the second being the connection's
  

• 			  source.
  

-- simple-audio-card,mclk-fs : Multiplication factor between stream rate and codec

• 			  mclk. When defined, mclk-fs property defined in
  

• 			  dai-link sub nodes are ignored.
  

-- simple-audio-card,hp-det-gpio : Reference to GPIO that signals when

• 			  headphones are attached.
  

-- simple-audio-card,mic-det-gpio : Reference to GPIO that signals when

• 			  a microphone is attached.
  

-- simple-audio-card,aux-devs : List of phandles pointing to auxiliary devices, such

• 			  as amplifiers, to be added to the sound card.
  

-- simple-audio-card,pin-switches : List of strings containing the widget names for

• 			  which pin switches must be created.
  

-Optional subnodes:

-- simple-audio-card,dai-link : Container for dai-link level

• 			  properties and the CPU and CODEC
  

• 			  sub-nodes. This container may be
  

• 			  omitted when the card has only one
  

• 			  DAI link. See the examples and the
  

• 			  section below.
  

-Dai-link subnode properties and subnodes:

-If dai-link subnode is omitted and the subnode properties are directly -under "sound"-node the subnode property and subnode names have to be -prefixed with "simple-audio-card,"-prefix.

-Required dai-link subnodes:

-- cpu : CPU sub-node -- codec : CODEC sub-node

-Optional dai-link subnode properties:

-- format : CPU/CODEC common audio format.

• 			  "i2s", "right_j", "left_j" , "dsp_a"
  

• 			  "dsp_b", "ac97", "pdm", "msb", "lsb"
  

-- frame-master : Indicates dai-link frame master.

• 			  phandle to a cpu or codec subnode.
  

-- bitclock-master : Indicates dai-link bit clock master.

• 			  phandle to a cpu or codec subnode.
  

-- bitclock-inversion : bool property. Add this if the

• 			  dai-link uses bit clock inversion.
  

-- frame-inversion : bool property. Add this if the

• 			  dai-link uses frame clock inversion.
  

-- mclk-fs : Multiplication factor between stream

• 			  rate and codec mclk, applied only for
  

• 			  the dai-link.
  

-For backward compatibility the frame-master and bitclock-master -properties can be used as booleans in codec subnode to indicate if the -codec is the dai-link frame or bit clock master. In this case there -should be no dai-link node, the same properties should not be present -at sound-node level, and the bitclock-inversion and frame-inversion -properties should also be placed in the codec node if needed.

-Required CPU/CODEC subnodes properties:

-- sound-dai : phandle and port of CPU/CODEC

-Optional CPU/CODEC subnodes properties:

-- dai-tdm-slot-num : Please refer to tdm-slot.txt. -- dai-tdm-slot-width : Please refer to tdm-slot.txt. -- clocks / system-clock-frequency : specify subnode's clock if needed.

• 			  it can be specified via "clocks" if system has
  

• 			  clock node (= common clock), or "system-clock-frequency"
  

• 			  (if system doens't support common clock)
  

• 			  If a clock is specified, it is
  

• 			  enabled with clk_prepare_enable()
  

• 			  in dai startup() and disabled with
  

• 			  clk_disable_unprepare() in dai
  

• 			  shutdown().
  

• 			  If a clock is specified and a
  

• 			  multiplication factor is given with
  

• 			  mclk-fs, the clock will be set to the
  

• 			  calculated mclk frequency when the
  

• 			  stream starts.
  

-- system-clock-direction-out : specifies clock direction as 'out' on

• 			  initialization. It is useful for some aCPUs with
  

• 			  fixed clocks.
  

---

-Example 1 - single DAI link:

-sound {

• compatible = "simple-audio-card";
• simple-audio-card,name = "VF610-Tower-Sound-Card";
• simple-audio-card,format = "left_j";
• simple-audio-card,bitclock-master = <&dailink0_master>;
• simple-audio-card,frame-master = <&dailink0_master>;
• simple-audio-card,widgets =

• "Microphone", "Microphone Jack",
  

• "Headphone", "Headphone Jack",
  

• "Speaker", "External Speaker";
  

• simple-audio-card,routing =

• "MIC_IN", "Microphone Jack",
  

• "Headphone Jack", "HP_OUT",
  

• "External Speaker", "LINE_OUT";
  

• simple-audio-card,cpu {

• sound-dai = <&sh_fsi2 0>;
  

• };
• dailink0_master: simple-audio-card,codec {

• sound-dai = <&ak4648>;
  

• clocks = <&osc>;
  

• };

-};

-&i2c0 {

• ak4648: ak4648@12 {

• #sound-dai-cells = <0>;
  

• compatible = "asahi-kasei,ak4648";
  

• reg = <0x12>;
  

• };

-};

-sh_fsi2: sh_fsi2@ec230000 {

• #sound-dai-cells = <1>;
• compatible = "renesas,sh_fsi2";
• reg = <0xec230000 0x400>;
• interrupt-parent = <&gic>;
• interrupts = <0 146 0x4>;

-};

---

-Example 2 - many DAI links:

-sound {

• compatible = "simple-audio-card";
• simple-audio-card,name = "Cubox Audio";
• simple-audio-card,dai-link@0 { /* I2S - HDMI */

• reg = <0>;
  

• format = "i2s";
  

• cpu {
  

• 	sound-dai = <&audio1 0>;
  

• };
  

• codec {
  

• 	sound-dai = <&tda998x 0>;
  

• };
  

• };
• simple-audio-card,dai-link@1 { /* S/PDIF - HDMI */

• reg = <1>;
  

• cpu {
  

• 	sound-dai = <&audio1 1>;
  

• };
  

• codec {
  

• 	sound-dai = <&tda998x 1>;
  

• };
  

• };
• simple-audio-card,dai-link@2 { /* S/PDIF - S/PDIF */

• reg = <2>;
  

• cpu {
  

• 	sound-dai = <&audio1 1>;
  

• };
  

• codec {
  

• 	sound-dai = <&spdif_codec>;
  

• };
  

• };

-};

---

-Example 3 - route audio from IMX6 SSI2 through TLV320DAC3100 codec

-through TPA6130A2 amplifier to headphones:

-&i2c0 {

• codec: tlv320dac3100@18 {

• compatible = "ti,tlv320dac3100";
  

• ...
  

• }
• amp: tpa6130a2@60 {

• compatible = "ti,tpa6130a2";
  

• ...
  

• }

-}

-sound {

• compatible = "simple-audio-card";
• ...
• simple-audio-card,widgets =

• "Headphone", "Headphone Jack";
  

• simple-audio-card,routing =

• "Headphone Jack", "HPLEFT",
  

• "Headphone Jack", "HPRIGHT",
  

• "LEFTIN", "HPL",
  

• "RIGHTIN", "HPR";
  

• simple-audio-card,aux-devs = <&amp>;
• simple-audio-card,cpu {

• sound-dai = <&ssi2>;
  

• };
• simple-audio-card,codec {

• sound-dai = <&codec>;
  

• clocks = ...
  

• };

-};

---

-Example 4. Sampling Rate Conversion

-sound {

• compatible = "simple-audio-card";
• simple-audio-card,name = "rsnd-ak4643";
• simple-audio-card,format = "left_j";
• simple-audio-card,bitclock-master = <&sndcodec>;
• simple-audio-card,frame-master = <&sndcodec>;
• simple-audio-card,convert-rate = <48000>;
• simple-audio-card,prefix = "ak4642";
• simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",

• 	"DAI0 Capture", "ak4642 Capture";
  

• sndcpu: simple-audio-card,cpu {

• sound-dai = <&rcar_sound>;
  

• };
• sndcodec: simple-audio-card,codec {

• sound-dai = <&ak4643>;
  

• system-clock-frequency = <11289600>;
  

• };

-};

---

-Example 5. 2 CPU 1 Codec (Mixing)

-sound {

• compatible = "simple-audio-card";
• simple-audio-card,name = "rsnd-ak4643";
• simple-audio-card,format = "left_j";
• simple-audio-card,bitclock-master = <&dpcmcpu>;
• simple-audio-card,frame-master = <&dpcmcpu>;
• simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",

• 	"ak4642 Playback", "DAI1 Playback";
  

• dpcmcpu: cpu@0 {

• sound-dai = <&rcar_sound 0>;
  

• };
• cpu@1 {

• sound-dai = <&rcar_sound 1>;
  

• };
• codec {

• prefix = "ak4642";
  

• sound-dai = <&ak4643>;
  

• clocks = <&audio_clock>;
  

• };

-};

---

-Example 6 - many DAI links with DPCM:

-CPU0 ------ ak4613 -CPU1 ------ PCM3168A-p /* DPCM 1ch/2ch */ -CPU2 --/ /* DPCM 3ch/4ch */ -CPU3 --/ /* DPCM 5ch/6ch */ -CPU4 --/ /* DPCM 7ch/8ch */ -CPU5 ------ PCM3168A-c

-sound {

• compatible = "simple-audio-card";
• simple-audio-card,routing =

•   "pcm3168a Playback", "DAI1 Playback",
  

•   "pcm3168a Playback", "DAI2 Playback",
  

•   "pcm3168a Playback", "DAI3 Playback",
  

•   "pcm3168a Playback", "DAI4 Playback";
  

• simple-audio-card,dai-link@0 {

• format = "left_j";
  

• bitclock-master = <&sndcpu0>;
  

• frame-master = <&sndcpu0>;
  

• sndcpu0: cpu {
  

• 	sound-dai = <&rcar_sound 0>;
  

• };
  

• codec {
  

• 	sound-dai = <&ak4613>;
  

• };
  

• };
• simple-audio-card,dai-link@1 {

• format = "i2s";
  

• bitclock-master = <&sndcpu1>;
  

• frame-master = <&sndcpu1>;
  

• convert-channels = <8>; /* TDM Split */
  

• sndcpu1: cpu@0 {
  

• 	sound-dai = <&rcar_sound 1>;
  

• };
  

• cpu@1 {
  

• 	sound-dai = <&rcar_sound 2>;
  

• };
  

• cpu@2 {
  

• 	sound-dai = <&rcar_sound 3>;
  

• };
  

• cpu@3 {
  

• 	sound-dai = <&rcar_sound 4>;
  

• };
  

• codec {
  

• 	mclk-fs = <512>;
  

• 	prefix = "pcm3168a";
  

• 	dai-tdm-slot-num = <8>;
  

• 	sound-dai = <&pcm3168a 0>;
  

• };
  

• };
• simple-audio-card,dai-link@2 {

• format = "i2s";
  

• bitclock-master = <&sndcpu2>;
  

• frame-master = <&sndcpu2>;
  

• sndcpu2: cpu {
  

• 	sound-dai = <&rcar_sound 5>;
  

• };
  

• codec {
  

• 	mclk-fs = <512>;
  

• 	prefix = "pcm3168a";
  

• 	sound-dai = <&pcm3168a 1>;
  

• };
  

• };

-}; diff --git a/Documentation/devicetree/bindings/sound/simple-card.yaml b/Documentation/devicetree/bindings/sound/simple-card.yaml new file mode 100644 index 000000000000..0a2a2c878c4a --- /dev/null +++ b/Documentation/devicetree/bindings/sound/simple-card.yaml @@ -0,0 +1,484 @@ +# SPDX-License-Identifier: GPL-2.0 +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/sound/simple-card.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml#

+title: Simple Audio Card Driver Device Tree Bindings

+maintainers:

• • Kuninori Morimoto kuninori.morimoto.gx@renesas.com

+definitions:

• frame-master:
• description: Indicates dai-link frame master.
• $ref: /schemas/types.yaml#/definitions/phandle-array

Only 1 phandle (plus args)? If so,

allOf: - $ref: /schemas/types.yaml#/definitions/phandle-array - maxItems: 1

• bitclock-master:
• description: Indicates dai-link bit clock master
• $ref: /schemas/types.yaml#/definitions/phandle-array
• frame-inversion:
• description: dai-link uses frame clock inversion
• $ref: /schemas/types.yaml#/definitions/flag
• bitclock-inversion:
• description: dai-link uses bit clock inversion
• $ref: /schemas/types.yaml#/definitions/flag
• dai-tdm-slot-num:
• description: see tdm-slot.txt.
• $ref: /schemas/types.yaml#/definitions/uint32

Is there a max?

• dai-tdm-slot-width:
• description: see tdm-slot.txt.
• $ref: /schemas/types.yaml#/definitions/uint32

max is 32 or something much less than 2^32?

• clocks:
• description: |

•  If a clock is specified and a multiplication factor is given with
  

•  mclk-fs, the clock will be set to the calculated mclk frequency
  

•  when the stream starts.
  

• $ref: /schemas/types.yaml#/definitions/phandle-array

'clocks' already has a type definition. You should only be defining how many and what each one is if more than 1.

• system-clock-frequency:
• description: |

•  If a clock is specified and a multiplication factor is given with
  

•  mclk-fs, the clock will be set to the calculated mclk frequency
  

•  when the stream starts.
  

• $ref: /schemas/types.yaml#/definitions/uint32
• system-clock-direction-out:
• description: |

•  specifies clock direction as 'out' on initialization.
  

•  It is useful for some aCPUs with fixed clocks.
  

• $ref: /schemas/types.yaml#/definitions/flag
• mclk-fs:
• description: |

•  Multiplication factor between stream rate and codec mclk.
  

•  When defined, mclk-fs property defined in dai-link sub nodes are ignored.
  

• $ref: /schemas/types.yaml#/definitions/uint32
• aux-devs:
• description: |

•  List of phandles pointing to auxiliary devices, such
  

•  as amplifiers, to be added to the sound card.
  

• $ref: /schemas/types.yaml#/definitions/phandle-array
• convert-rate:
• description: CPU to Codec rate convert.
• $ref: /schemas/types.yaml#/definitions/uint32
• convert-channels:
• description: CPU to Codec rate channels.
• $ref: /schemas/types.yaml#/definitions/uint32
• prefix:
• description: "device name prefix"
• $ref: /schemas/types.yaml#/definitions/string
• label:
• description: "device name"
• $ref: /schemas/types.yaml#/definitions/string

'label' already has a type definition.

• routing:
• description: |

•  A list of the connections between audio components.
  

•  Each entry is a pair of strings, the first being the
  

•  connection's sink, the second being the connection's source.
  

• $ref: /schemas/types.yaml#/definitions/non-unique-string-array
• widgets:
• description: User specified audio sound widgets.
• $ref: /schemas/types.yaml#/definitions/non-unique-string-array
• pin-switches:
• description: the widget names for which pin switches must be created.
• $ref: /schemas/types.yaml#/definitions/string-array
• format:
• description: audio format.
• items:

•  enum:
  

•    - i2s
  

•    - right_j
  

•    - left_j
  

•    - dsp_a
  

•    - dsp_b
  

•    - ac97
  

•    - pdm
  

•    - msb
  

•    - lsb
  

• dai:
• type: object
• properties:

•  sound-dai:
  

•    $ref: /schemas/types.yaml#/definitions/phandle-array
  

This should have a common definition elsewhere which I'd prefer be in the dtschema repo. You can just assume there is and do 'maxItems: 1' here assuming it's only 1.

•  # common properties
  

•  mclk-fs:
  

•    $ref: "#/definitions/mclk-fs"
  

•  prefix:
  

•    $ref: "#/definitions/prefix"
  

•  frame-inversion:
  

•    $ref: "#/definitions/frame-inversion"
  

•  bitclock-inversion:
  

•    $ref: "#/definitions/bitclock-inversion"
  

•  frame-master:
  

•    $ref: /schemas/types.yaml#/definitions/flag
  

•  bitclock-master:
  

•    $ref: /schemas/types.yaml#/definitions/flag
  

•  dai-tdm-slot-num:
  

•    $ref: "#/definitions/dai-tdm-slot-num"
  

•  dai-tdm-slot-width:
  

•    $ref: "#/definitions/dai-tdm-slot-width"
  

•  clocks:
  

•    $ref: "#/definitions/clocks"
  

•  system-clock-frequency:
  

•    $ref: "#/definitions/system-clock-frequency"
  

•  system-clock-direction-out:
  

•    $ref: "#/definitions/system-clock-direction-out"
  

• required:

•  - sound-dai
  

+properties:

• compatible:
• contains:

•  enum:
  

•    - simple-audio-card
  

•    - simple-scu-audio-card
  

• "#address-cells": true
• "#size-cells": true

Aren't these always 1 and 0, respectively?

• label:
• $ref: "#/definitions/label"
• simple-audio-card,name:
• description: User specified audio sound card name.
• $ref: /schemas/types.yaml#/definitions/string

+# use patternProperties to use "#definitions/xxx" +patternProperties:

• "^simple-audio-card,widgets$":
• $ref: "#/definitions/widgets"
• "^simple-audio-card,routing$":
• $ref: "#/definitions/routing"
• "^simple-audio-card,cpu(@.*)?":
• $ref: "#/definitions/dai"
• "^simple-audio-card,codec(@.*)?":
• $ref: "#/definitions/dai"
• # common properties
• "^simple-audio-card,frame-master$":
• $ref: "#/definitions/frame-master"
• "^simple-audio-card,bitclock-master$":
• $ref: "#/definitions/bitclock-master"
• "^simple-audio-card,frame-inversion$":
• $ref: "#/definitions/frame-inversion"
• "^simple-audio-card,bitclock-inversion$":
• $ref: "#/definitions/bitclock-inversion"
• "^simple-audio-card,format$":
• $ref: "#/definitions/format"
• "^simple-audio-card,mclk-fs$":
• $ref: "#/definitions/mclk-fs"
• "^simple-audio-card,aux-devs$":
• $ref: "#/definitions/aux-devs"
• "^simple-audio-card,convert-rate$":
• $ref: "#/definitions/convert-rate"
• "^simple-audio-card,convert-channels$":
• $ref: "#/definitions/convert-channels"
• "^simple-audio-card,prefix$":
• $ref: "#/definitions/prefix"
• "^simple-audio-card,pin-switches$":
• $ref: "#/definitions/pin-switches"

+# use common *-gpio for +# simple-audio-card,hp-det-gpio: +# simple-audio-card,mic-det-gpio:

• "^simple-audio-card,dai-link(@.*)?":

We can do better than '.*' with '[0-9a-f]'. Also, needs a '$' on the end.

• description: |

•  Container for dai-link level properties and the CPU and CODEC sub-nodes.
  

•  This container may be omitted when the card has only one DAI link.
  

• type: object
• properties:

•  reg:
  

•    $ref: /schemas/types.yaml#/definitions/uint32
  

Just 'maxItems: 1' is enough.

•  # common properties
  

•  frame-master:
  

•    $ref: "#/definitions/frame-master"
  

•  bitclock-master:
  

•    $ref: "#/definitions/bitclock-master"
  

•  frame-inversion:
  

•    $ref: "#/definitions/frame-inversion"
  

•  bitclock-inversion:
  

•    $ref: "#/definitions/bitclock-inversion"
  

•  format:
  

•    $ref: "#/definitions/format"
  

•  mclk-fs:
  

•    $ref: "#/definitions/mclk-fs"
  

•  aux-devs:
  

•    $ref: "#/definitions/aux-devs"
  

•  convert-rate:
  

•    $ref: "#/definitions/convert-rate"
  

•  convert-channels:
  

•    $ref: "#/definitions/convert-channels"
  

•  prefix:
  

•    $ref: "#/definitions/prefix"
  

•  pin-switches:
  

•    $ref: "#/definitions/pin-switches"
  

•  # use common *-gpio for
  

•  #	hp-det-gpio:
  

•  #	mic-det-gpio:
  

• patternProperties:

•  "^cpu(@.*)?":
  

Same as previous comment on unit-address. Can do better than '.*'.

•    $ref: "#/definitions/dai"
  

•  "^codec(@.*)?":
  

•    $ref: "#/definitions/dai"
  

• additionalProperties: false

+required:

• • compatible

+additionalProperties: false

+examples: +#-------------------- +# single DAI link +#--------------------

• • |
• sound {

•    compatible = "simple-audio-card";
  

•    simple-audio-card,name = "VF610-Tower-Sound-Card";
  

•    simple-audio-card,format = "left_j";
  

•    simple-audio-card,bitclock-master = <&dailink0_master>;
  

•    simple-audio-card,frame-master = <&dailink0_master>;
  

•    simple-audio-card,widgets =
  

•            "Microphone", "Microphone Jack",
  

•            "Headphone", "Headphone Jack",
  

•            "Speaker", "External Speaker";
  

•    simple-audio-card,routing =
  

•            "MIC_IN", "Microphone Jack",
  

•            "Headphone Jack", "HP_OUT",
  

•            "External Speaker", "LINE_OUT";
  

•    simple-audio-card,cpu {
  

•        sound-dai = <&sh_fsi2 0>;
  

•    };
  

•    dailink0_master: simple-audio-card,codec {
  

•        sound-dai = <&ak4648>;
  

•        clocks = <&osc>;
  

•    };
  

• };

+#-------------------- +# Multi DAI links +#--------------------

• • |
• sound {

•    compatible = "simple-audio-card";
  

•    simple-audio-card,name = "Cubox Audio";
  

•    #address-cells = <1>;
  

•    #size-cells = <0>;
  

•    simple-audio-card,dai-link@0 {		/* I2S - HDMI */
  

•        reg = <0>;
  

•        format = "i2s";
  

•        cpu {
  

•            sound-dai = <&audio0>;
  

•        };
  

•        codec {
  

•            sound-dai = <&tda998x0>;
  

•        };
  

•    };
  

•    simple-audio-card,dai-link@1 {		/* S/PDIF - HDMI */
  

•        reg = <1>;
  

•        cpu {
  

•            sound-dai = <&audio1>;
  

•        };
  

•        codec {
  

•            sound-dai = <&tda998x1>;
  

•        };
  

•    };
  

•    simple-audio-card,dai-link@2 {		/* S/PDIF - S/PDIF */
  

•        reg = <2>;
  

•        cpu {
  

•            sound-dai = <&audio2>;
  

•        };
  

•        codec {
  

•            sound-dai = <&spdif_codec>;
  

•        };
  

•    };
  

• };

+#-------------------- +# route audio from IMX6 SSI2 through TLV320DAC3100 codec +# through TPA6130A2 amplifier to headphones: +#--------------------

• • |
• sound {

•    compatible = "simple-audio-card";
  

•    simple-audio-card,widgets =
  

•        "Headphone", "Headphone Jack";
  

•    simple-audio-card,routing =
  

•        "Headphone Jack", "HPLEFT",
  

•        "Headphone Jack", "HPRIGHT",
  

•        "LEFTIN", "HPL",
  

•        "RIGHTIN", "HPR";
  

•    simple-audio-card,aux-devs = <&amp>;
  

•    simple-audio-card,cpu {
  

•        sound-dai = <&ssi2>;
  

•    };
  

•    simple-audio-card,codec {
  

•        sound-dai = <&codec>;
  

•        clocks = <&clocks>;
  

•    };
  

• };

+#-------------------- +# Sampling Rate Conversion +#--------------------

• • |
• sound {

•    compatible = "simple-audio-card";
  

•    simple-audio-card,name = "rsnd-ak4643";
  

•    simple-audio-card,format = "left_j";
  

•    simple-audio-card,bitclock-master = <&sndcodec>;
  

•    simple-audio-card,frame-master = <&sndcodec>;
  

•    simple-audio-card,convert-rate = <48000>;
  

•    simple-audio-card,prefix = "ak4642";
  

•    simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
  

•                                "DAI0 Capture", "ak4642 Capture";
  

•    sndcpu: simple-audio-card,cpu {
  

•        sound-dai = <&rcar_sound>;
  

•    };
  

•    sndcodec: simple-audio-card,codec {
  

•        sound-dai = <&ak4643>;
  

•        system-clock-frequency = <11289600>;
  

•    };
  

• };

+#-------------------- +# 2 CPU 1 Codec (Mixing) +#--------------------

• • |
• sound {

•    compatible = "simple-audio-card";
  

•    simple-audio-card,name = "rsnd-ak4643";
  

•    simple-audio-card,format = "left_j";
  

•    simple-audio-card,bitclock-master = <&dpcmcpu>;
  

•    simple-audio-card,frame-master = <&dpcmcpu>;
  

•    simple-audio-card,convert-rate = <48000>;
  

•    simple-audio-card,convert-channels = <2>;
  

•    simple-audio-card,routing = "ak4642 Playback", "DAI0 Playback",
  

•                                "ak4642 Playback", "DAI1 Playback";
  

•    dpcmcpu: simple-audio-card,cpu@0 {
  

•        sound-dai = <&rcar_sound 0>;
  

•    };
  

•    simple-audio-card,cpu@1 {
  

•        sound-dai = <&rcar_sound 1>;
  

•    };
  

•    simple-audio-card,codec {
  

•        prefix = "ak4642";
  

•        sound-dai = <&ak4643>;
  

•        clocks = <&audio_clock>;
  

•    };
  

• };

+#-------------------- +# Multi DAI links with DPCM: +# +# CPU0 ------ ak4613 +# CPU1 ------ PCM3168A-p /* DPCM 1ch/2ch */ +# CPU2 --/ /* DPCM 3ch/4ch */ +# CPU3 --/ /* DPCM 5ch/6ch */ +# CPU4 --/ /* DPCM 7ch/8ch */ +# CPU5 ------ PCM3168A-c +#--------------------

• • |
• sound {

•    compatible = "simple-audio-card";
  

•    simple-audio-card,routing =
  

•        "pcm3168a Playback", "DAI1 Playback",
  

•        "pcm3168a Playback", "DAI2 Playback",
  

•        "pcm3168a Playback", "DAI3 Playback",
  

•        "pcm3168a Playback", "DAI4 Playback";
  

•    simple-audio-card,dai-link@0 {
  

•        format = "left_j";
  

•        bitclock-master = <&sndcpu0>;
  

•        frame-master = <&sndcpu0>;
  

•        sndcpu0: cpu {
  

•            sound-dai = <&rcar_sound 0>;
  

•        };
  

•        codec {
  

•            sound-dai = <&ak4613>;
  

•        };
  

•    };
  

•    simple-audio-card,dai-link@1 {
  

•        format = "i2s";
  

•        bitclock-master = <&sndcpu1>;
  

•        frame-master = <&sndcpu1>;
  

•        convert-channels = <8>; /* TDM Split */
  

•        sndcpu1: cpu@0 {
  

•            sound-dai = <&rcar_sound 1>;
  

•        };
  

•        cpu@1 {
  

•            sound-dai = <&rcar_sound 2>;
  

•        };
  

•        cpu@2 {
  

•            sound-dai = <&rcar_sound 3>;
  

•        };
  

•        cpu@3 {
  

•            sound-dai = <&rcar_sound 4>;
  

•        };
  

•        codec {
  

•            mclk-fs = <512>;
  

•            prefix = "pcm3168a";
  

•            dai-tdm-slot-num = <8>;
  

•            sound-dai = <&pcm3168a 0>;
  

•        };
  

•    };
  

•    simple-audio-card,dai-link@2 {
  

•        format = "i2s";
  

•        bitclock-master = <&sndcpu2>;
  

•        frame-master = <&sndcpu2>;
  

•        sndcpu2: cpu {
  

•            sound-dai = <&rcar_sound 5>;
  

•        };
  

•        codec {
  

•            mclk-fs = <512>;
  

•            prefix = "pcm3168a";
  

•            sound-dai = <&pcm3168a 1>;
  

•        };
  

•    };
  

• };

-- 2.17.1