Re: [PATCH v2 0/2] arm64: dts: rockchip: Support PMU for rk3399 SoCs

[Caesar Wang]

On 2016å09æ05æ 06:09, Heiko Stuebner wrote:
> Hi Caesar,
>
> Am Samstag, 3. September 2016, 08:13:17 CEST schrieb Caesar Wang:
> > Heiko,
> >
> > What do you think of it?
> > Maybe I need re-update these patches on next kernel, and re-test them.
> I checked linux-next and the underlying changes seem to all have gone in now,
> so we should be fine.
>
> Updating the patches would be cool. I tried applying them to my dts64 branch
> just now, but they don't apply cleanly anymore due to other changes going in
> before.
>
> When you check against linux-next, please take into account that there is no
> new linux-next since 20160825 and 20160905 is the next planned linux-next
> release (probably Stephen being on holiday).

I will update/resend them base on your v4.9-armsoc/dts64 branch. (Wait a 
moment to retest them)

Thanks.


> Thanks
> Heiko
>
> > On 2016å07æ06æ 16:05, Caesar Wang wrote:
> > > Hello Heiko, Marc & ARM guys
> > >
> > > When Jay first submitted the rk3399.dtsi upstream
> > > <https://patchwork.kernel.org/patch/8885821/> he had the PMU node in
> > > there,
> > > but then took it out because the upstream binding wasn't done yet.
> > > It looks as if the upstream stuff has landed, since in linux/master I see:
> > > 287e9357abcc DT/arm,gic-v3: Documment PPI partition support
> > > e3825ba1af3a irqchip/gic-v3: Add support for partitioned PPIs
> > > 9e2c986cb460 irqchip: Add per-cpu interrupt partitioning library
> > > 222df54fd8b7 genirq: Allow the affinity of a percpu interrupt to be
> > > set/retrieved 651e8b54abde irqdomain: Allow domain matching on irq_fwspec
> > >
> > > This series patches add to support the rk3399 SoCs PMU.
> > > I pick up the https://patchwork.kernel.org/patch/9209369/.
> > >
> > > As do some tests with ChromeOs for my rk3399 board.
> > > Tested with linus master 4.7-rc6 kernel on rk3399 board.
> > > https://github.com/Caesar-github/rockchip/tree/rk3399/pmu-upstream
> > >
> > > localhost / # perf list
> > >
> > > List of pre-defined events (to be used in -e):
> > > cpu-cycles OR cycles [Hardware event]
> > > instructions [Hardware event]
> > > cache-references [Hardware event]
> > > cache-misses [Hardware event]
> > > branch-instructions OR branches [Hardware event]
> > > branch-misses [Hardware event]
> > > bus-cycles [Hardware event]
> > > ...
> > >
> > > perf stat --cpu 0/1/2/3..... to minitor
> > > e.g. cpu0;
> > >
> > > localhost / # perf stat --cpu 0
> > >
> > > Performance counter stats for 'CPU(s) 0':
> > >
> > > 3374.917571 task-clock (msec) # 1.001 CPUs utilized [100.00%]
> > > 20 context-switches # 0.006 K/sec [100.00%]
> > > 2 cpu-migrations # 0.001 K/sec [100.00%]
> > > 55 page-faults # 0.016 K/sec
> > > 7151843 cycles # 0.002 GHz [100.00%]
> > > <not supported> stalled-cycles-frontend
> > > <not supported> stalled-cycles-backend
> > > 4272536 instructions # 0.60 insns per cycle [100.00%]
> > > 568406 branches # 0.168 M/sec [100.00%]
> > > 65652 branch-misses # 11.55% of all branches
> > >
> > > Also, 'perf top' to monitor the PMU interrupts from cpus
> > >
> > > -Caesar
> > >
> > >
> > > Changes in v2:
> > > - AS Mark comments on https://patchwork.kernel.org/patch/9209369/
> > >
> > >     remove the interrupt-affinity property, we need depend on Marc' perf
> > >     code on https://patchwork.kernel.org/patch/9209369/.
> > >
> > > Caesar Wang (2):
> > >     arm64: dts: rockchip: change all interrupts cells for 4 on rk3399 SoCs
> > >     arm64: dts: rockchip: support the pmu node for rk3399
> > >    
> > >    arch/arm64/boot/dts/rockchip/rk3399.dtsi | 118
> > >    ++++++++++++++++++------------- 1 file changed, 69 insertions(+), 49
> > >    deletions(-)
>
>
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--
caesar wang | software engineer | wxt@xxxxxxxxxxxxx