On 03/02/2025 14:17, Mark Brown wrote:
On Mon, Feb 03, 2025 at 12:49:45PM +0000, srinivas.kandagatla@xxxxxxxxxx wrote:
From: Srinivas Kandagatla <srinivas.kandagatla@xxxxxxxxxx>
With the existing code, we are only setting up one period at a time, in a
ping-pong buffer style. This tiggers lot of underruns in the dsp
leading to jitter noise during audio playback.
Fix this by scheduling all the periods, this will ensure that the dsp
has enough buffer feed and ultimatley fixing the underruns and audio
distortion.
Should we be writing all periods or just the minimum number of periods
that's configured? Userspace might not have filled the whole buffer
yet.
Just minimum number of periods or 1 period. We are queuing up all the
periods to the DSP, so that we do not have to wait for period interrupt
to queue the next one. This significantly reduces the latency in queuing
the periods to dsp.
--srini
