NACK: [PATCH 0/1][SRU][linux-firmware][F/H/I] Fix no sound card detected problem on HDA+DMIC with skylake driver

Timo Aaltonen tjaalton at
Wed Jul 28 08:25:06 UTC 2021

On 28.7.2021 11.06, Timo Aaltonen wrote:
> On 26.7.2021 18.57, chris.chiu at wrote:
>> From: Chris Chiu <chris.chiu at>
>> BugLink:
>> [Impact]
>> Skylake, Kabylake, Kabylake-refresh, Amberlake and some other 
>> platforms where audio is of SPT (PCH) type, HDA (with DSP 
>> capabilities) plus DMIC configuration is supported on these with 
>> skylake driver since kernel 5.8. However, no sound card can be 
>> detected w/o the topology binary file in /lib/firmware and 
>> corresponding ucm file.
>> [Fix]
>> be enabled for the snd_soc_skl driver to support HDA+DMIC 
>> configuration. And the topology binary file and UCM files need to be 
>> located in the correct path based on Intel's suggestion. 
>> [Test]
>> On the Skylake/Kabylake platforms with either the PCI device 8086:9d70 
>> and 8086:9d71, boot up the machine and check the existence of the 
>> sound card by either 'aplay -l' or 'pactl list' command.
>> [Where problems could occur]
>> Should be low risk, it only affects limited Intel Platforms with 
>> particular PCI device IDs + HDA plus DMIC configuration.
>> Chris Chiu (1):
>>    linux-firmware: add audio topology for HDA+DMIC with Skylake driver
>>   WHENCE                       |  33 +++++++++++++++++++++++++++++++++
>>   skl_hda_dsp_generic-tplg.bin | Bin 0 -> 67152 bytes
>>   2 files changed, 33 insertions(+)
>>   create mode 100644 skl_hda_dsp_generic-tplg.bin
> marked as SAUCE, and applied to all series

Actually now that I think of it, I'm not sure linux-firmware is the 
right place.. alsa-topology-conf package ships the files, but looks like 
starting with 1.2.5 they provide a Makefile to build the firmware. We'd 
have file conflicts when new a-t-c ships them.. so I'd think that's the 
correct place to put them right from the start.

and with that, I've reverted this from the l-f branches.


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