On Wed, Jun 3, 2020 at 1:04 PM Sudeep Holla <sudeep.holla@xxxxxxx> wrote: > > On Fri, May 29, 2020 at 09:37:58AM +0530, Viresh Kumar wrote: > > On 28-05-20, 13:20, Rob Herring wrote: > > > Whether Linux > > > requires serializing mailbox accesses is a separate issue. On that side, > > > it seems silly to not allow driving the h/w in the most efficient way > > > possible. > > > > That's exactly what we are trying to say. The hardware allows us to > > write all 32 bits in parallel, without any hardware issues, why > > shouldn't we do that ? The delay (which Sudeep will find out, he is > > facing issues with hardware access because of lockdown right now) > > OK, I was able to access the setup today. I couldn't reach a point > where I can do measurements as the system just became unusable with > one physical channel instead of 2 virtual channels as in my patches. > > My test was simple. Switch to schedutil and read sensors periodically > via sysfs. > > arm-scmi firmware:scmi: message for 1 is not expected! > This sounds like you are not serialising requests on a shared channel. Can you please also share the patch? Thanks.
