ARM: dts: iwg22d-sodimm: Sound DMA support via DVC on DTS (6f41d5e0) · Commits · 戴 / test

DMA transfer uses DVC DMA DMApp [MEM] -> [SRC] -> [DVC] -> [SSIU] -> [SSI] DMA DMApp [MEM] <- [DVC] <- [SRC] <- [SSIU] <- [SSI] Signed-off-by:

arch/arm/boot/dts/r8a7745-iwg22d-sodimm.dts

+25 −2

Original line number	Diff line number	Diff line
		@@ -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>;
		};
		};
		};