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authorKuninori Morimoto <kuninori.morimoto.gx@renesas.com>2014-11-11 07:37:05 +0300
committerSimon Horman <horms+renesas@verge.net.au>2014-11-19 03:22:11 +0300
commitce47481652106e955296651a1b76c0dd4561cfbc (patch)
tree431ff29147079df0d1e1d029a26d2c9329f2742b /arch/arm/boot/dts/r8a7791-koelsch.dts
parentbd2e4a62ef68b3c5a8542026533bd87c631c544d (diff)
downloadlinux-ce47481652106e955296651a1b76c0dd4561cfbc.tar.xz
ARM: shmobile: koelsch: add Volume Ramp usage on comment
Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Diffstat (limited to 'arch/arm/boot/dts/r8a7791-koelsch.dts')
-rw-r--r--arch/arm/boot/dts/r8a7791-koelsch.dts9
1 files changed, 9 insertions, 0 deletions
diff --git a/arch/arm/boot/dts/r8a7791-koelsch.dts b/arch/arm/boot/dts/r8a7791-koelsch.dts
index a10f534ecec7..487fc99a2fa3 100644
--- a/arch/arm/boot/dts/r8a7791-koelsch.dts
+++ b/arch/arm/boot/dts/r8a7791-koelsch.dts
@@ -27,6 +27,15 @@
*
* 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/;