Sugar Zhang f9cbc2829b
ASoC: rockchip: add support for vad ...
This patch add support for rockchip voice activity detection.
The vad is used to detect the amplitude of voice which is
received by analog mic, i2s digital mic or pdm digital mic
when soc is in low power mode. if the amplitude of voice is
over threshold, the vad will assert interrupt to wake up soc,
then soc will exit low power mode.
Change-Id: Idb7a3adb87ec4c07274eefd82da4672d493c7627
Signed-off-by: Sugar Zhang <sugar.zhang@rock-chips.com >
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