big.LITTLE status for rk3399/rockpro64?

[Greg V]

On Thu, Jul 30, 2020 at 10:05, Josh Howard <bsd at zeppelin.net> wrote:
> On Thu, 30 Jul 2020 09:02:56 -0700,
> William Carson via freebsd-arm wrote:
>> 
>> 
>>  > On Jul 28, 2020, at 10:43 AM, Vincent Milum Jr 
>> <freebsd-arm at darkain.com> wrote:
>>  >
>>  > The downside is that the two big cores are not fully clocking up 
>> to their max
>>  > speed, because FreeBSD doesn't have support yet to clock cores or 
>> groups of
>>  > cores independently.
>> 
>>  Is this true? I'm running r363091 on a RockPro64 with 
>> sysutils/powerdxx and it
>>  supports the different frequencies just fine:
>> 
>>  # sysctl dev.cpu.{0,1,2,3,4,5}.freq
>>  dev.cpu.0.freq: 1416
>>  dev.cpu.1.freq: 1416
>>  dev.cpu.2.freq: 1416
>>  dev.cpu.3.freq: 1416
>>  dev.cpu.4.freq: 1800
>>  dev.cpu.5.freq: 1800
> 
> powerdxx definitely does help. I think the other issue is that if you 
> set ncpu=4,
> you get get the max freq_levels of 1512 for the 4 CPUs, but when all 
> 6 are
> enabled, it finds the highest common freq, which is 1416. 
> Furthermore, we only
> set the big cores at 1800, but they should be 2016.

Wait, "it" == stock powerd? oh sure it might not support that. I was 
only considering manual setting of these sysctls.

re: what the maximum should be, that depends on your device tree.
I have overclocked mine to 2200.