APPLIED[F]: [SRU][OEM-OSP1/E/unstable][PATCH 00/11] alsa/sof: change to use hda hdmi codec driver to make hdmi audio on the docking station work

Seth Forshee seth.forshee at
Mon Dec 16 19:45:14 UTC 2019

On Mon, Dec 09, 2019 at 04:44:55PM +0800, Hui Wang wrote:
> BugLink:
> [Impact]
> We have integrated the alsa sof driver in the oem-osp1 kernel, and
> when we tested the hdmi audio function on the docking station, we
> found if the machine use sof driver, the hdmi audio on the docking
> station can't work.
> [Fix]
> Intel wrote patches to let sof driver to choose hda hdmi codec
> driver, then both hdmi on the laptop and on the docking station
> worked.
> [Test Case]
> ran the kernel with these patches, and in the userspace, we used
> the intel updated ucm, then the hdmi audio on the docking station
> worked.
> [Regression Risk]
> Low, Intel wrote the patches and told us to backport these patches.
> In addition, we already tested these patches with 4 oem project bugs,
> all worked well.

Applied to focal/master-next. Not needed in unstable as they are patches
from 5.5.

This is a pretty big amount of change for SRU. I know regressio testing
was done, but it looks like it was fairly limited. Might be a good idea
to let these bake in focal for a bit before applying them for SRU.

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