[SRU][linux-firmware][Focal/Groovy][PATCH 0/1] sof-firmware: support 1 and 3 dmics

[Hui Wang]

On 2020/8/19 上午4:21, Seth Forshee wrote:
> On Fri, Aug 14, 2020 at 01:54:24PM +0800, Hui Wang wrote:
>> BugLink: https://bugs.launchpad.net/bugs/1891585
>>
>> [Impact]
>> On a Dell tigerlake laptop, the sof driver fails to detect the dmic,
>> it alwasys report 0 dmics on the machine. So users doesn't have
>> internal mic to use.
>>
>> [Fix]
>> Intel provides 2 new topology files to us, they could support 1
>> dmic and 3 dmics.
>>
>> [Test Case]
>> Boot the kernel with this patch, and put sof-hda-generic-1ch.tplg in
>> the linux-firmware, the sof driver could detect the dmic and users
>> have a workable internal mic after booting up.
>>
>> [Regression Risk]
>> This is adding 2 new topology files, not changing anything on
>> current sof-firmware, so the regression posibility is very low.
> Just to confirm, as we've had problems with sof firmware files in the
> past due to signing problems. Have you confirmed that these files have
> been signed appropriately, if they require signatures?

Confirmed with Intel, all topology files (*.tplg) are not signed by any 
keys. Only firmware files (*.ri) need to be signed.

Thanks,

Hui.


>
> Thanks,
> Seth