On 05/03/2021 16:19, Pierre-Louis Bossart wrote:
The question is: what happens if that device is NOT described in the
Device Tree data? The loop over bus->slaves will not find this device
by comparing with known devID values, so the set_bit(i,
bus->assigned) will not happen.
yes, that is true, There is no way we can assign a dev_number to the
device which is not enumerated on the bus!
Am sure this is the same behavior with soundwire core too, atleast
form the code I can see it sets the assigned bit for only the devices
that are enumerated on the bus! Not all the devices specified in DT!
Unless I missed something!
I am talking about the other way around, where a device is present and
enumerated on the bus but not listed in DT. In that case the hardware
did assign a device number but bus->assigned will not be set.
thanks for your patience!
Ah, I understand it now!, yes that part is missing!
adding Something like what core does in qcom driver should fix it!
if (!found) {
sdw_slave_add(bus, &id, NULL);
dev_err(bus->dev, "Slave Entry not found\n");
}
--srini
