[PATCH v2 0/2] arm64: dts: rockchip: Support PMU for rk3399 SoCs
caesar.upstream at gmail.com
Wed Jul 13 18:14:57 PDT 2016
On 2016年07月06日 19:24, Mark Rutland wrote:
> On Wed, Jul 06, 2016 at 04:05:55PM +0800, Caesar Wang wrote:
>> Hello Heiko, Marc & ARM guys
> These patches themselves look fine, so FWIW:
> Acked-by: Mark Rutland <mark.rutland at arm.com>
Thanks your ack.
> The prerequisite patch from Marc  also largely looks fine, but there
> are some minor details to sort out , so at this point in time I'm
> guesssing this is all v4.9 material.
>  http://lists.infradead.org/pipermail/linux-arm-kernel/2016-July/440647.html
>  http://lists.infradead.org/pipermail/linux-arm-kernel/2016-July/441495.html
Okay, I saw the Marc's patch had been merged on next kernel.:-)
>> 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.
>> 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
>> 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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