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Commit ae79f66d authored by Simon Horman's avatar Simon Horman
Browse files

ARM: dts: gose: enable sound DMA support via DVC in device tree 



Enable DMA transfer using DVC in r8a7793/gose device tree.

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

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

Based on similar work for the r8a7791/koelsch by Kuninori Morimoto.

Cc: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Acked-by: default avatarGeert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: default avatarSimon Horman <horms+renesas@verge.net.au>
parent d2cde3b6

arch/arm/boot/dts/r8a7793-gose.dts

+19 −2
Original line number Original line Diff line number Diff line
@@ -18,7 +18,24 @@ 
 * This command is required when Playback/Capture

 * This command is required when Playback/Capture

 *

 *

 *	amixer set "LINEOUT Mixer DACL" on

 *	amixer set "LINEOUT Mixer DACL" on

 *	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/;

/dts-v1/;

#include "r8a7793.dtsi"

#include "r8a7793.dtsi"

#include <dt-bindings/gpio/gpio.h>

#include <dt-bindings/gpio/gpio.h>
@@ -401,8 +418,8 @@ 




	rcar_sound,dai {

	rcar_sound,dai {

		dai0 {

		dai0 {

			playback = <&ssi0 &src2>;

			playback = <&ssi0 &src2 &dvc0>;

			capture  = <&ssi1 &src3>;

			capture  = <&ssi1 &src3 &dvc1>;

		};

		};

	};

	};

};

};