On Wed, Apr 17, 2019 at 02:30:53PM +0000, Jacky Bai wrote: > > Hi Lucas, > > Either SCMI or SCPI, I think it is initially designed for SOC that has > dedicated SCP to manage the SOC resource, but for i.MX8M, we don't have such > support. so just for the power domain support, do you have other suggestion > for it. > I disagree, I thought it was clear from my earlier email. All OSPM like Linux kernel cares is conformance to the interface. And SCMI/SCPI kind of interface doesn't mandate how to implement either at the hardware (you may or may not have dedicated processor) or software level(can do it in TF-A through SMC, or some remote process through mailbox) I am clearly against the custom SMC: 1. It will never end and it's put together without much design thoughts just to address specific need of the hour. 2. It gets obsolete very soon, mainly because of (1) 3. Very platform and vendor specific and soon we will find ourselves in ocean of such custom calls And I can definitely continue the list, but I have made the point. I think we already have enough of those custom SMC already now and it's high time to stop that non-sense for OSPM. -- Regards, Sudeep
