[PATCH v3 13/14] ARM: shmobile: gose: enable sound DMA support via DVC in device tree
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STALE3928d
SUPERSEDED: 6 (6M)
From: Simon Horman <hidden>
Date: 2016-01-15 02:38:06
Also in:
linux-sh
Subsystem:
the rest · Maintainer:
Linus Torvalds
Revision v3 of 3 in this series; 1 review trailer.
Revisions (3)
- v2 [diff vs current]
- v3 current
- v4 [diff vs current]
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: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Simon Horman <redacted>
---
arch/arm/boot/dts/r8a7793-gose.dts | 21 +++++++++++++++++++--
1 file changed, 19 insertions(+), 2 deletions(-)
diff --git a/arch/arm/boot/dts/r8a7793-gose.dts b/arch/arm/boot/dts/r8a7793-gose.dts
index ad20ddc5203d..958ef72991c5 100644
--- a/arch/arm/boot/dts/r8a7793-gose.dts
+++ b/arch/arm/boot/dts/r8a7793-gose.dts@@ -18,7 +18,24 @@ * This command is required when Playback/Capture * * 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/; #include "r8a7793.dtsi" #include <dt-bindings/gpio/gpio.h>
@@ -315,8 +332,8 @@ rcar_sound,dai { dai0 { - playback = <&ssi0 &src2>; - capture = <&ssi1 &src3>; + playback = <&ssi0 &src2 &dvc0>; + capture = <&ssi1 &src3 &dvc1>; }; }; };
--
2.1.4