Re: [PATCH v3 2/2] arm64: dts: rockchip: support the pmu node for rk3399

On 2016年09月06日 06:27, Heiko Stuebner wrote:

Am Dienstag, 6. September 2016, 02:17:15 CEST schrieb Caesar Wang:

quoted

This patch adds to enable the ARM Performance Monitor Units for rk3399.
ARM cores often have a PMU for counting cpu and cache events like cache
misses and hits.

Also, as the Marc posted the patches [0] to support Partitioning per-cpu
interrupts. Let's add this patch to match it on rk3399 SoCs.

[0]:
https://lkml.org/lkml/2016/4/11/182

Signed-off-by: Caesar Wang <redacted>
Acked-by: Mark Rutland <redacted>
Cc: Heiko Stuebner <redacted>
Cc: Marc Zyngier <redacted>
CC: linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org

I've applied this one but did some corrections [0]:

- ppi-partitions is supposed to be a subnode of the gic, that is why the code
also start search for it starting from the gic node - I've moved it
- I've renamed the phandles taking part0/part1 from the example feels a bit to
generic, so it's now ppi_cluster0 and ppi_cluster1 matching the cpu-clusters

I've gave this a spin on my rk3399evb and the ppi-partitions got recognized
as well as the pmu instances got created, but please also double check again.

Yup, thanks the fixes.

Thanks
Heiko


[0] https://git.kernel.org/cgit/linux/kernel/git/mmind/linux-rockchip.git/
commit/?id=48120b1af6f072bfd6b075bf9be560ad6fda2faa


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caesar wang | software engineer | wxt-TNX95d0MmH73oGB3hsPCZA@public.gmane.org


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