We need to have as less time between OMAP McPDM shutdown, and power down of the DAC on the twl6040 codec as possible. Request core to ignore the pmdown_time for the playback stream. Backround: with the McPDM protocol we are sendning not only the pure audio stream, but OMAP McPDM also transmits additional information (for example offset cancellation). If McPDM is stopped prior to the DAC this information will be not sent to the codec, which can result noise rendered by the twl6040 codec.
Signed-off-by: Peter Ujfalusi peter.ujfalusi@ti.com --- sound/soc/omap/sdp4430.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
diff --git a/sound/soc/omap/sdp4430.c b/sound/soc/omap/sdp4430.c index cc3d792..e2f93e8 100644 --- a/sound/soc/omap/sdp4430.c +++ b/sound/soc/omap/sdp4430.c @@ -155,6 +155,7 @@ static struct snd_soc_dai_link sdp4430_dai = { .codec_dai_name = "twl6040-legacy", .platform_name = "omap-pcm-audio", .codec_name = "twl6040-codec", + .ignore_pmdown_time = 1, .init = sdp4430_twl6040_init, .ops = &sdp4430_ops, };