Re: Raspberry Pi POE+ hat overlay

I'm not sure about 12.3 either - you could try with 13.2 and see if that
makes a difference.

On Wed, 17 May 2023 at 13:45, Nuno Teixeira <eduardo@freebsd.org> wrote:

> Hey,
>
> Ok. I'm new to rpi4 and arm in general but tomorrow I will force
> 'arm_freq=1800' again just to see it it crashes again.
> I will check too what values linux shows.
>
> I don't know if firmware/uboot version included in 12.3 supports this
> feature.
>
> Cheers,
>
> Doug Rabson <dfr@rabson.org> escreveu no dia quarta, 17/05/2023 à(s)
> 13:11:
>
>> Hi Nuno,
>>
>> I'm not sure where to start - I just happened to notice in the
>> documentation here:
>> https://www.raspberrypi.com/documentation/computers/config_txt.html that
>> the cpu frequency Pi4B R1.4 was listed as 1800 if arm_boot=1 so I tried it.
>>
>> Doug.
>>
>>
>>
>> On Wed, 17 May 2023 at 11:11, Nuno Teixeira <eduardo@freebsd.org> wrote:
>>
>>> Hello Doug,
>>>
>>> I have too a 1.5 rpi but arm_boost=1 isn't doing anything, htop shows
>>> 1500Mhz when doing something intensive.
>>> I'm running 13.2 stable
>>>
>>> Do I missing something?
>>>
>>> Could you take a look at my setup?
>>>
>>> Thanks,
>>>
>>> Doug Rabson <dfr@rabson.org> escreveu no dia terça, 16/05/2023 à(s)
>>> 17:19:
>>>
>>>>
>>>> On Sat, 13 May 2023 at 13:45, Doug Rabson <dfr@rabson.org> wrote:
>>>>
>>>>> I was able to build an updated rpi-firmware port based on 1.20210805
>>>>> and this boots successfully on pi400 as well as rpi4. With this, I can load
>>>>> the rpi-poe-plus overlay and I just need to try and reverse engineer the
>>>>> undocumented mailbox API by reading the Linux code.
>>>>>
>>>>
>>>> I have a first approximation of a fan driver which works with the
>>>> 1.20210805 firmware (actually, I substituted rpi-poe-plus.dtbo from
>>>> 1.20210831 which just changes the fan levels for the POE+). I'm testing
>>>> with an rpi4B rev 1.5 with 'make -j4 buildworld' and the fan is keeping the
>>>> cpu temperature below 65 degrees which is nice, especially since I set
>>>> arm_boost=1 in config.txt which boosts the cpu frequency up to 1800 for
>>>> this board.
>>>>
>>>> Does anyone have a pointer to the problem with firmware later than
>>>> 20210805? Would it make any kind of sense to try to get the fix into
>>>> releng/13.2 as an errata?
>>>>
>>>>
>>>
>>> --
>>> Nuno Teixeira
>>> FreeBSD Committer (ports)
>>>
>>
>
> --
> Nuno Teixeira
> FreeBSD Committer (ports)
>