there maybe more than one i2s module inside chip, and these i2s modules have different channels features. for example: there are 3 i2s in rk3066, one support 8 channels playback and 2 channels capture, but the others only support 2 channels playback and 2 channels capture. in order to compatible with these various chips, we add playback and capture property to specify these values. there are default channels configuration in driver: 8 channels playback and 2 channels capture. if not add property, we use the default values. Sugar Zhang (3): ASoC: rockchip: i2s: compatible with different chips ASoC: rockchip: add playback property ARM: dts: rockchip: add channels properties for i2s .../devicetree/bindings/sound/rockchip-i2s.txt | 2 ++ arch/arm/boot/dts/rk3066a.dtsi | 6 ++++++ arch/arm/boot/dts/rk3188.dtsi | 2 ++ arch/arm/boot/dts/rk3288.dtsi | 2 ++ sound/soc/rockchip/rockchip_i2s.c | 20 +++++++++++++++----- 5 files changed, 27 insertions(+), 5 deletions(-) -- 2.3.6 _______________________________________________ Alsa-devel mailing list Alsa-devel@xxxxxxxxxxxxxxxx http://mailman.alsa-project.org/mailman/listinfo/alsa-devel
