Will Deacon <will.deacon@xxxxxxx> writes:
[...]
> Right. Can you confirm whether the PMU/CTI interrupts fire for you please?
> Just run perf top and look at /proc/interrupts while it's running. You
> should see a couple of arm-pmu entries in there and hopefully numbers > 0.
Ah, I see now (I'm a perf newbie.)
Indeed, like you, I have to change the EMU clock domain to SWSUP[1] in
order to see any interrupts and see anything in perf top. This isn't
really a mergeable workaround, so I'll look into this a little closer
with Santosh to see what we can do once we fully understand the HW
problem.
Kevin
[1]
diff --git a/arch/arm/mach-omap2/clockdomains44xx_data.c b/arch/arm/mach-omap2/clockdomains44xx_data.c
index 9299ac2..41d2260 100644
--- a/arch/arm/mach-omap2/clockdomains44xx_data.c
+++ b/arch/arm/mach-omap2/clockdomains44xx_data.c
@@ -390,7 +390,7 @@ static struct clockdomain emu_sys_44xx_clkdm = {
.prcm_partition = OMAP4430_PRM_PARTITION,
.cm_inst = OMAP4430_PRM_EMU_CM_INST,
.clkdm_offs = OMAP4430_PRM_EMU_CM_EMU_CDOFFS,
- .flags = CLKDM_CAN_HWSUP,
+ .flags = CLKDM_CAN_SWSUP,
};
--
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