From ce47481652106e955296651a1b76c0dd4561cfbc Mon Sep 17 00:00:00 2001 From: Kuninori Morimoto Date: Tue, 11 Nov 2014 04:37:05 +0000 Subject: ARM: shmobile: koelsch: add Volume Ramp usage on comment Signed-off-by: Kuninori Morimoto Signed-off-by: Simon Horman --- arch/arm/boot/dts/r8a7791-koelsch.dts | 9 +++++++++ 1 file changed, 9 insertions(+) (limited to 'arch/arm/boot/dts/r8a7791-koelsch.dts') 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/; -- cgit v1.2.3