Re: [PATCH] soundwire: fix initializing sysfs for same devices on different buses

["Mukunda,Vijendar" <vijendar.mukunda@amd.com>]

On 05/10/23 17:54, Pierre-Louis Bossart wrote:
>
>
>> I think we keep circling on the differences between "Controller" and
>> "link" (aka bus). A Controller can have one or more links. A system can
>> have one or more controllers.
>>
>> Intel platforms have one controller and 4 or more links.
>> QCOM platforms have one or more controllers with one link each.
>>
>> I am not sure how this IDA-generated bus_id helps deal with these two
>> cases, since we can't really make any assumptions on how
>> controllers/links will be started and probed.
>>
>> What we are missing is a hierarchical controller/link definition, IOW a
>> controller_id should be given to the master by a higher level instead of
>> using an IDA.
> Tentative patches to introduce a 'controller_id' that's not an IDA are
> here: https://github.com/thesofproject/linux/pull/4616
>
> Initial results are positive for Intel devices. it *should* work for
> other devices but I can't test. If folks at Linaro/Qualcomm and AMD can
> give it a try, that would be much appreciated.
Will test on AMD platforms and let you know the result.

>
> Thanks.