On 09/05/2022 15:36, Pierre-Louis Bossart wrote:
Even if enumeration timeout, we will not access the registers because
the ASoC codec is not registered yet from WCD938x component master.
What happens when the codec is registered then? the autoenumeration
Codec is only registered after reset and when both TX and RX components
are probed.
still didn't complete, so what prevents the read/writes from failing
then?
If codec is reset and registered and for some reason autoenum took more
than 100ms which will be hw bug then :-).
In this case register read/writes will fail.
Does this reset result in the 'bus reset' in the SoundWire sence and
restart hence the autoenumeration?
The reset am referring here is codec reset gpio line. on reset device
will show up on the bus which should trigger an autoenumeration.
It looks like you have a race between different components and starting
the bus before it's needed, no?WCD938x is bit of a odd hw configuration, that is why we are using
Component framework for this codec. This does ensure most part of it.
--srini
