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ARM: dts: iwg20d-q7-common: Sound DMA support via DVC on DTS 

DMA transfer uses DVC

     DMA               DMApp
[MEM] -> [SRC] -> [DVC] -> [SSIU] -> [SSI]

     DMA               DMApp
[MEM] <- [DVC] <- [SRC] <- [SSIU] <- [SSI]

Signed-off-by: Biju Das <biju.das@bp.renesas.com>
Reviewed-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Acked-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Biju Das 2017-12-18 18:22:41 +00:00 committed by Simon Horman
parent b4b2094511
commit 0ed33948cb
1 changed files with 25 additions and 2 deletions
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27
arch/arm/boot/dts/iwg20d-q7-common.dtsi
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@ -8,6 +8,29 @@
* kind, whether express or implied.
*/
/*
* SSI-SGTL5000
*
* This command is required when Playback/Capture
*
* amixer set "DVC Out" 100%
* amixer set "DVC In" 100%
*
* You can use Mute
*
* amixer set "DVC Out Mute" on
* amixer set "DVC In Mute" on
*
* You can use Volume Ramp
*
* amixer set "DVC Out Ramp Up Rate" "0.125 dB/64 steps"
* amixer set "DVC Out Ramp Down Rate" "0.125 dB/512 steps"
* amixer set "DVC Out Ramp" on
* aplay xxx.wav &
* amixer set "DVC Out" 80% // Volume Down
* amixer set "DVC Out" 100% // Volume Up
*/
/ {
aliases {
serial0 = &scif0;
@ -208,8 +231,8 @@
rcar_sound,dai {
dai0 {
playback = <&ssi1 &src3>;
capture = <&ssi0 &src2>;
playback = <&ssi1 &src3 &dvc1>;
capture = <&ssi0 &src2 &dvc0>;
};
};
};