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.
