In reply to @alex:tunstall.xyz

Has anyone worked out how to get the VF2 to run at 1.5GHz?

I'm using a kernel with the AXP15060 enabled and all the patches for PMIC and CPU freq applied, but the system still runs at 1GHz (the boot clock rate).

[nixos@nixos:/etc/nixos/nixos-vf2]$ sudo cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_{cur,max}_freq
1000000
1500000
[nixos@nixos:/etc/nixos/nixos-vf2]$ sudo cat /sys/devices/system/cpu/cpufreq/policy0/scaling_{driver,governor,cur_freq}
cpufreq-dt
performance
1500000

I've asked upstream because I couldn't work out what's wrong, inexperienced as I am at kernel hacking.

https://github.com/starfive-tech/VisionFive2/issues/55

In reply to @fgaz:matrix.org
sent an image.

Is that the devel branch kernel?

The CPU frequency shown is the max frequency, but is that also what you get for /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq?

Asking because I don't want to spend 10+ hours building the devel branch kernel (+ time needed to get it to build and work properly).

In reply to @raitobezarius:matrix.org
you can also just cross compile :p

I'm not entirely sure how I'd then hook that into nixos-rebuild.

nix copy to the VF2 and then hardcode the store path (or a symlink to it) in place of the native kernel in the system config?

That's how I know how long it takes to build the Linux kernel in the first place. 🙃

(I could probably disable a lot of unused modules to reduce the build times, but is it worth it?)

In reply to @alex:tunstall.xyz

Is that the devel branch kernel?

The CPU frequency shown is the max frequency, but is that also what you get for /sys/devices/system/cpu/cpu*/cpufreq/cpuinfo_cur_freq?

Asking because I don't want to spend 10+ hours building the devel branch kernel (+ time needed to get it to build and work properly).

It's this one (the board is a star64, not a vf2) https://github.com/Fishwaldo/Star64_linux/commit/765947eacb2408a3a232cbe8093bf28a991f3c35

Yes I get 1.5GHz

In reply to @fgaz:matrix.org

It's this one (the board is a star64, not a vf2) https://github.com/Fishwaldo/Star64_linux/commit/765947eacb2408a3a232cbe8093bf28a991f3c35

Yes I get 1.5GHz

In reply to @fgaz:matrix.org
sent an image.

In reply to @fgaz:matrix.org
https://github.com/NixOS/nixos-hardware/pull/662

I'm currently compiling with a few patches applied to try to fix the compilation problems without disabling DRM, since I'd really like to get working HDMI on my VF2.

I'll share the configuration if I'm able to get it working. Given the similarities between the two SBCs (and their respective Linux fork), it might work for the Star64 too.

In reply to @alex:tunstall.xyz

Has anyone worked out how to get the VF2 to run at 1.5GHz?

I'm using a kernel with the AXP15060 enabled and all the patches for PMIC and CPU freq applied, but the system still runs at 1GHz (the boot clock rate).

[nixos@nixos:/etc/nixos/nixos-vf2]$ sudo cat /sys/devices/system/cpu/cpufreq/policy0/cpuinfo_{cur,max}_freq
1000000
1500000
[nixos@nixos:/etc/nixos/nixos-vf2]$ sudo cat /sys/devices/system/cpu/cpufreq/policy0/scaling_{driver,governor,cur_freq}
cpufreq-dt
performance
1500000

It's even worse now, haha

% sudo grep '' /sys/devices/system/cpu/cpufreq/policy0/*
/sys/devices/system/cpu/cpufreq/policy0/affected_cpus:0 1 2 3
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_cur_freq:500000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_min_freq:375000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_transition_latency:4294967295
/sys/devices/system/cpu/cpufreq/policy0/related_cpus:0 1 2 3
/sys/devices/system/cpu/cpufreq/policy0/scaling_available_frequencies:375000 500000 750000 1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_available_governors:performance schedutil
/sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_driver:cpufreq-dt
/sys/devices/system/cpu/cpufreq/policy0/scaling_governor:performance
/sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_setspeed:<unsupported>
% uname -a
Linux nixos 6.4.0 #1-NixOS SMP Tue Jan  1 00:00:00 UTC 1980 riscv64 GNU/Linux

In reply to @misuzu:matrix.org

It's even worse now, haha

% sudo grep '' /sys/devices/system/cpu/cpufreq/policy0/*
/sys/devices/system/cpu/cpufreq/policy0/affected_cpus:0 1 2 3
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_cur_freq:500000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_max_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_min_freq:375000
/sys/devices/system/cpu/cpufreq/policy0/cpuinfo_transition_latency:4294967295
/sys/devices/system/cpu/cpufreq/policy0/related_cpus:0 1 2 3
/sys/devices/system/cpu/cpufreq/policy0/scaling_available_frequencies:375000 500000 750000 1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_available_governors:performance schedutil
/sys/devices/system/cpu/cpufreq/policy0/scaling_cur_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_driver:cpufreq-dt
/sys/devices/system/cpu/cpufreq/policy0/scaling_governor:performance
/sys/devices/system/cpu/cpufreq/policy0/scaling_max_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_min_freq:1500000
/sys/devices/system/cpu/cpufreq/policy0/scaling_setspeed:<unsupported>
% uname -a
Linux nixos 6.4.0 #1-NixOS SMP Tue Jan  1 00:00:00 UTC 1980 riscv64 GNU/Linux

In reply to @alex:tunstall.xyz
I was on upstream 6.4.0 (from commit 4964ce0a869e) when I wrote that. I assume from your repository that this behaviour is from a build of e5a381c51d624ffd8784db908a58ae227d0608a4?