On Wed, Jun 3, 2020 at 1:31 PM Sudeep Holla <sudeep.holla@xxxxxxx> wrote: > > > > > > H/W is actually fine :) Its just that the driver is written to > > _also_ support a platform (my original) that doesn't have shmem and > > need to pass data via 32bit registers. > > Frankly, I am not against the doorbell mode, I am against implementing > > two modes in a driver. If it really helped (note the past tense) the > > SCMI, we could implement the driver only in doorbell mode but > > unfortunately SCMI would still be _broken_ for non-doorbell > > controllers. > > Should be fine as the specification is designed to work with only shmem > for any data transfer and mailbox is just a signal mechanism. I won't > be too worried about that. > Please clarify how it will work on, say again, rockchip platform with shmem. thanks.