On Thu, 02 Oct 2025 10:47:14 +0300, Peter Ujfalusi wrote:
With SRC in the firmware processing pipeline the FE and BE rate can be different, the sample counters on the two side of the DSP counts in different rate domain and they will drift apart. The counters should be moved to the same rate domain to be usable for delay calculation.
The ChainDMA offset value was incorrect since the host buffer size and the trigger to start the chain is misunderstood initially.
[...]
Applied to
https://git.kernel.org/pub/scm/linux/kernel/git/broonie/sound.git for-next
Thanks!
[1/5] ASoC: SOF: ipc4-pcm: fix delay calculation when DSP resamples commit: bcd1383516bb5a6f72b2d1e7f7ad42c4a14837d1 [2/5] ASoC: SOF: ipc4-pcm: fix start offset calculation for chain DMA commit: bace10b59624e6bd8d68bc9304357f292f1b3dcf
All being well this means that it will be integrated into the linux-next tree (usually sometime in the next 24 hours) and sent to Linus during the next merge window (or sooner if it is a bug fix), however if problems are discovered then the patch may be dropped or reverted.
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Thanks, Mark