On Wed, Sep 04, 2024 at 01:29:29PM +0200, Konrad Dybcio wrote: > On 4.09.2024 9:00 AM, Johan Hovold wrote: [...] > > > > Unfortunately, this patch breaks resume from suspend on the x1e80100 crd: > > > > [ 26.919676] CPU4: Booted secondary processor 0x0000010000 [0x511f0011] > > [ 26.960607] arm-scmi firmware:scmi: timed out in resp(caller: do_xfer+0x164/0x568) > > [ 26.987142] cpufreq: cpufreq_online: ->get() failed > > > > and then the machine hangs (mostly, I saw an nvme timeout message after a > > while). > > > > Make sure you test suspend as well as some of the warnings I reported > > only show up during suspend. > > Eh it looks like PERF_LEVEL_GET (msgid 8) requires the use of FC, but > the firmware fails to inform us about it through BIT(0) in attrs.. > Just trying to understand things better here. So the firmware expects OSPM to just use FC only for PERF_LEVEL_GET and hence doesn't implement the default/normal channel for PERF_LEVEL_GET(I assume it returns error ?) but fails to set the attribute indicating FC is available for the domain. I am not sure if that is stupid choice or there is some cost benefit in not implementing PERF_LEVEL_GET via normal channel if that is a fact. I am very much interested to know the reason either way especially if it is latter. -- Regards, Sudeep
