Rockchip RK3399 (ROCKPro64) boots to multiuser

[Greg V]

On Wed, Aug 15, 2018 at 11:44 PM, Emmanuel Vadot 
<manu at bidouilliste.com> wrote:
> On Wed, 15 Aug 2018 22:41:34 +0300
> Greg V <greg at unrelenting.technology> wrote:
>>  Alright everyone, good news ? I managed to reclock the CPU!!!
>> 
>>  The patch is now at https://reviews.freebsd.org/D16732
> 
>  Thanks a lot !!
>  I'll have a deeper look when I'm back from BSDCam.
> 
>>  (and I think the style is more correct now. Though it's really 
>> fscking
>>  silly that the style doesn't like making "table-like" structures 
>> look
>>  like tables, i.e. with one-line "rows".)
>> 
>>  Plus the hack you need to reclock the CPU right now at
>>  https://gist.github.com/myfreeweb/88cb9340652f56498f4be770c77b9d61
>> 
>>  (the hack allows cpufreq_dt to deal with clock only, no voltage ?
>>  since we don't have all the drivers for voltage.)
> 
>  Are you able to switch to any frequency with that ?
>  I would expect the cpu to hang if the voltage is too low or too high.
> (I encounter that on RK3328)

Yeah — I maxed the clocks for both big and LITTLE cores and got 
pretty great performance.

e.g. unixbench dhrystone index with cpuset to a big core: 804 — which 
is more than the 737 I got on Scaleway's ThunderX VPS!
ThunderX is still way better on unixbench's other tests though.
Not that unixbench is a great test…

Compiling neovim also took *way* less time than on RPi/ROCK64.

So, I think the big cores' voltage regulator (silergy,syr827) might 
just default to the highest voltage.
The chip gets rather warm when just idling in FreeBSD…