On Thu, Jan 26, 2023 at 12:21:06PM +0200, Andy Shevchenko wrote: > On Thu, Jan 26, 2023 at 10:41:47AM +0200, Tomi Valkeinen wrote: > > On 25/01/2023 17:27, Andy Shevchenko wrote: > > ... > > > > But I probably don't understand the ATR structure and what exactly we need to > > > pass to it, perhaps it also can be replaced with properties (note, that we have > > > some interesting ones that called references, which is an alternative to DT > > > phandle). > > > > Well, maybe this needs a Linux bus implementation. I'm not that familiar > > with implementing a bus, but I think that would make it easier to share data > > between the deserializer and the serializer. A bus sounds a bit like an > > overkill for a 1-to-1 connection, used by a few drivers, but maybe it > > wouldn't be too much code. > > Have you looked at auxiliary bus (appeared a few releases ago in kernel)? As far as I understand, the auxiliary bus infrastructure is meant for use cases where a single hardware device needs to be split into multiple logical devices (as in struct device). Platform devices were historically (ab)used for this, and the auxiliary bus is meant as a cleaner solution. I'm not sure if it would be a good match here, or if it would be considered an abuse of the auxiliary bus API. -- Regards, Laurent Pinchart
