Hi Will On 05/11/2012 07:25 AM, Will Deacon wrote: > On Thu, May 10, 2012 at 07:55:01PM +0100, Jon Hunter wrote: >> Hi Will, > > Hi Jon, > >> For my testing I have just been reading the PM_EMU_PWRSTST register which >> shows the power state of the EMU power domain. It should read 3 when the >> power domain is ON and 0 when it is off. I did something like the following >> (dumping all EMU clock and power domain registers). > > I figured I may as well take perf for a spin and see how I got on. The good > news is that the hwmod bits all seem to work as before and the correct IRQs > are requested: > > root@florentine-pogen:~# cat /proc/interrupts > CPU0 CPU1 > 29: 44527 17916 GIC twd > 33: 0 0 GIC arm-pmu > 34: 0 0 GIC arm-pmu > > But, unfortunately, as you can see from the above, I just can't persuade them > to fire. The PMU counters do tick, but they happily increment through zero > without us realising. I retested with my perf/omap4 branch to make sure my > board is ok, and the irqs do fire there. > > Any ideas?
Do you disable OMAP2/3 support in the kernel config, so that CPU_HAS_PMU is enabled? Cheers Jon -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to [email protected] More majordomo info at http://vger.kernel.org/majordomo-info.html
