On Thu, May 17, 2018 at 06:55:26PM +0200, Stefan Wahren wrote: > > Vince Weaver <[email protected]> hat am 17. Mai 2018 um 18:34 > > geschrieben: > > On Thu, 17 May 2018, Stefan Wahren wrote: > > > > Eric Anholt <[email protected]> hat am 17. Mai 2018 um 15:17 geschrieben:
> > > > The a53 and a7 counters seem to match up, so we advertise a7 so that > > > > arm32 can probe. > > > > so how closely did you look at the a53/a7 differences? I see some major > > differences, especially with the CPU_CYCLES event (0xff vs 0x11). > > > > The proper fix here might be to add a cortex-a53 PMU entry to the armv7 > > code rather than trying to treat it as a cortex-a7. > > we like to use the PMU of BCM2837 SoC (4x A53 cores) under arm32 and arm64. > > What is the right way (tm) to the define the DT compatibles? > Does the arm32 PMU driver need patching for proper A53 support? I'm completely clueless on all of this; Mark might have ideas.
