PMU setting in bcm2387 dtsi file

Stefan Wahren stefan.wahren at i2se.com
Wed Aug 16 09:00:12 PDT 2017


Am 16.08.2017 um 17:23 schrieb Vince Weaver:
> On Tue, 15 Aug 2017, Stefan Wahren wrote:
>
>>> I did ask at the bare-metal forum, and they pointed me to this document:
>>> https://www.raspberrypi.org/documentation/hardware/raspberrypi/bcm2836/QA7_rev3.4.pdf
>> Okay, i take a quick look but i can't see the interrupt type (edge
>> rising/falling, level high/low). It would be nice to have a confirmation
>> about this.
> I can ask again, although some of the people on the bare-metal forum are
> grumpy that I'm asking supposedly Linux-related questions there.

You could argue this is hardware-related. Otherwise the mods should move 
this to the right forum.

>
>>> $ cat /proc/interrupts
>>>             CPU0       CPU1       CPU2       CPU3
>>> ....
>>>    9:        562          4       1616         10  bcm2836-pmu   9 Edge      arm-pmu
>> Just a question: did you only test 64 bit mode or 32 bit, too?
> I only tested 64-bit.  I could try a 32-bit upstream kernel too if you
> want but it might be a few days until I get a chance to do that.

No need to hurry. The merges for 4.14 have been pulled.

>
> On a recent pi-foundation 32-bit kernel things work too:

Unfortunately this isn't helpful because the foundation devicetrees 
contains a lot of #ifdef magic.

Thanks
Stefan

>
> $ cat /proc/interrupts
>
>             CPU0       CPU1       CPU2       CPU3
> ...
>   21:      19567      26095      36936      23190  bcm2836-pmu   9 Edge
>
>
> Vince




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