[SRU][F/OEM-5.6][PATCH 0/3] soc/amd/renoir: detect dmic from acpi table

Stefan Bader stefan.bader at canonical.com
Wed Jul 22 07:38:46 UTC 2020

On 20.07.20 03:58, Hui Wang wrote:
> BugLink: https://bugs.launchpad.net/bugs/1887734
> Groovy kernel already merged the patchset

The [F/OEM-5.6] is a little confusing. Most of the time that format is used to
specify a specific kernel/branch in a certain series. Though from the bug report
it looks like the generic kernel is requested as well.
So maybe a "[F][F/OEM-5.6]" would be a better way of expressing this. I believe
that will help those looking over the patches and also picking things to apply.

> [Impact]
> On the amd renoir machines, there is possibility that they have no dmic
> from the hardware desgin, but the driver register a dmic unconditionally,
> to avoid it, add the dmic detection code in the driver.
> [Fix]
> Backport 3 patches from upstream.
> [Test Case]
> On the 3 Lenovo ADM renoir machines, boot the kernel with this patchset,
> all dmic could be detected and registered as before. Disable the dmic
> in the BIOS, the driver can't detect the dmic and the dmic is not
> registered in the driver.
> [Regression Risk]
> Low, this SRU are only specific to soc/amd/renoir, and we already
> tested on 3 lenovo machines, they worked as expected.
> Vijendar Mukunda (3):
>   ASoC: amd: add logic to check dmic hardware runtime
>   ASoC: amd: add ACPI dependency check
>   ASoC: amd: fixed kernel warnings
>  sound/soc/amd/renoir/rn-pci-acp3x.c | 33 +++++++++++++++++++++++++++++
>  sound/soc/amd/renoir/rn_acp3x.h     |  2 ++
>  2 files changed, 35 insertions(+)

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