Messages in this thread | | | Date | Tue, 9 Nov 2021 09:46:23 -0600 | Subject | Re: [PATCH v3 0/5] Refactor thermal pressure update to avoid code duplication | From | Steev Klimaszewski <> |
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On 11/9/21 2:29 AM, Lukasz Luba wrote: > Hi Steev, > > That's interesting what you've done with Rockchip RK3399. > I would like to reproduce your experiment on my RockPI 4B v1.3. > Could you tell me how you to add this boost frequency that you have > mentioned in some previous emails? > > I want to have similar setup to yours and I'll check all the subsystems > involved in the decision making process for triggering this boost freq. > > Thank you for your support. > > Regards, > Lukasz
Hi Lukasz,
It was actually something that Armbian had been doing as an overlay for their setup, and I thought, why does it need to be an overlay, when we could simply hide it behind turbo-mode so that if users want to overclock, they simply echo 1 and if it's unstable or cooling/power isn't enough, they can echo 0 or leave it off (boost defaults to off) - so that being said:
I apply this patch https://gitlab.com/kalilinux/build-scripts/kali-arm/-/blob/master/patches/pinebook-pro/pbp-5.14/rk3399-opp-overclock-2GHz-turbo-mode.patch which adds the 1.5GHz for little cores and 2GHz for the big to the rk3399 dtsi
To enable at boot time, I simply have "echo 1 > /sys/devices/system/cpu/cpufreq/boost" in my /etc/rc.local And to disable, simply echo 0 in there (it defaults to 0 so it's off and most users won't know it exists.)
I'm pretty sure this is "abusing" turbo-mode, but it works well enough...
Hope that helps,
-- steev
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