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ARM: dts: iwg22d-sodimm: 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>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
This commit is contained in:
Biju Das 2017-12-20 20:02:05 +00:00 committed by Simon Horman
parent 5ce5faa6fc
commit 6f41d5e087
1 changed files with 25 additions and 2 deletions
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27
arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts
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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
*/
/dts-v1/;
#include "r8a7745-iwg22m.dtsi"
@ -183,8 +206,8 @@
rcar_sound,dai {
dai0 {
playback = <&ssi3 &src3>;
capture = <&ssi4 &src4>;
playback = <&ssi3 &src3 &dvc0>;
capture = <&ssi4 &src4 &dvc1>;
};
};
};