1st port on Multi ports is for paired CPU/Codec, and the 2nd or later port are for Multi Elements. This patch indicates its image to easy to understand.
Signed-off-by: Kuninori Morimoto kuninori.morimoto.gx@renesas.com --- sound/soc/generic/audio-graph-card2.c | 52 +++++++++++++-------------- 1 file changed, 26 insertions(+), 26 deletions(-)
diff --git a/sound/soc/generic/audio-graph-card2.c b/sound/soc/generic/audio-graph-card2.c index 7146611df730..c564f630abf6 100644 --- a/sound/soc/generic/audio-graph-card2.c +++ b/sound/soc/generic/audio-graph-card2.c @@ -83,32 +83,32 @@ Multi-CPU/Codec ************************************
-It has connection part (= X) and list part (= y). -links indicates connection part of CPU side (= A). +It has link connection part (= X,x) and list part (= A,B,a,b). +"links" is connection part of CPU side (= @).
- +-+ (A) +-+ - CPU1 --(y) | | <-(X)--(X)-> | | (y)-- Codec1 - CPU2 --(y) | | | | (y)-- Codec2 - +-+ +-+ + +----+ +---+ + CPU1 --|A X| <-@----> |x a|-- Codec1 + CPU2 --|B | | b|-- Codec2 + +----+ +---+
- sound { - compatible = "audio-graph-card2"; + sound { + compatible = "audio-graph-card2";
-(A) links = <&mcpu>; +(@) links = <&mcpu>;
- multi { - ports@0 { -(X) (A) mcpu: port@0 { mcpu0_ep: endpoint { remote-endpoint = <&mcodec0_ep>; }; }; -(y) port@1 { mcpu1_ep: endpoint { remote-endpoint = <&cpu1_ep>; }; }; -(y) port@2 { mcpu2_ep: endpoint { remote-endpoint = <&cpu2_ep>; }; }; - }; - ports@1 { -(X) port@0 { mcodec0_ep: endpoint { remote-endpoint = <&mcpu0_ep>; }; }; -(y) port@1 { mcodec1_ep: endpoint { remote-endpoint = <&codec1_ep>; }; }; -(y) port@2 { mcodec2_ep: endpoint { remote-endpoint = <&codec2_ep>; }; }; - }; + multi { + ports@0 { +(@) mcpu: port@0 { mcpu0_ep: endpoint { remote-endpoint = <&mcodec0_ep>; }; }; // (X) to pair + port@1 { mcpu1_ep: endpoint { remote-endpoint = <&cpu1_ep>; }; }; // (A) Multi Element + port@2 { mcpu2_ep: endpoint { remote-endpoint = <&cpu2_ep>; }; }; // (B) Multi Element + }; + ports@1 { + port@0 { mcodec0_ep: endpoint { remote-endpoint = <&mcpu0_ep>; }; }; // (x) to pair + port@1 { mcodec1_ep: endpoint { remote-endpoint = <&codec1_ep>; }; }; // (a) Multi Element + port@2 { mcodec2_ep: endpoint { remote-endpoint = <&codec2_ep>; }; }; // (b) Multi Element }; }; + };
CPU { ports { @@ -328,9 +328,9 @@ static struct device_node *graph_get_next_multi_ep(struct device_node **port) /* * multi { * ports { - * => lnk: port@0 { ... }; - * port@1 { ep { ... = rep0 } }; - * port@2 { ep { ... = rep1 } }; + * => lnk: port@0 { ... }; // to pair + * port@1 { ep { ... = rep0 } }; // Multi Element + * port@2 { ep { ... = rep1 } }; // Multi Element * ... * }; * }; @@ -920,9 +920,9 @@ static int graph_counter(struct device_node *lnk) * * multi { * ports { - * => lnk: port@0 { ... }; - * port@1 { ... }; - * port@2 { ... }; + * => lnk: port@0 { ... }; // to pair + * port@1 { ... }; // Multi Element + * port@2 { ... }; // Multi Element * ... * }; * };