> > Or consider part of the SCMI-SMC transport API that output arg a0 > > shall be 0 on success, SMCCC_RET_NOT_SUPPORTED if function ID is not > > supported and any non-zero value for non-generic **error** codes. > > > > I prefer that. Anyways I will check and if anything changes I will ping > back on this thread.
I don't have a strong opinion on whether considering or not 0 as success, for whatever the function ID used here for SCMI message notification. We can assume at least 0 is default returned in a0 when the function ID is used in SCMI SMC transport. Thanks for the feedback. > -- > Regards, > Sudeep
