Re: [PATCH 19/19] ASoC: amd: ps: increase runtime suspend delay

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On 1/17/23 06:16, Mark Brown wrote:
> On Tue, Jan 17, 2023 at 05:51:03AM -0600, Pierre-Louis Bossart wrote:
>> On 1/17/23 05:33, Mukunda,Vijendar wrote:
> 
>> [    2.758904] rt1316-sdca sdw:0:025d:1316:01:0: ASoC: error at
>> snd_soc_component_update_bits on sdw:0:025d:1316:01:0 for register:
>> [0x00003004] -110
> 
>> The last one is clearly listed in the regmap list.
> 
>> You probably want to reverse-engineer what causes these accesses.
>> I see this suspicious kcontrol definition that might be related:
> 
>> 	SOC_SINGLE("Left I Tag Select", 0x3004, 4, 7, 0),
> 
> Looks like a case for putting the CODEC in cache only mode...

Right, and I think we'd need to do this during the probe instead of the
hardware initialization (which could happen at a later time).

I started a PR to try and improve regmap handling, see
https://github.com/thesofproject/linux/pull/3941

I was trying to solve the case where codecs become unattached, but
apparently the problem is hardware-related. One of the suggested
improvements was to move the cache_only part earlier to prevent such
accesses. Unfortunately the work isn't complete so that PR is just a
draft at the moment.



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