Rpi 4 v1.4 1.8GHz underclocked to 1.5Ghz with IPfire

[cast (Cast Casovsky)]

Good morning IPfire Community

This is my very first post here, but I have a pleasure to play with IPfire for over 2 years now. You do a great job and the product is fantastic.

I started my adventure with alternative software for routers in 2019 testing Tomato/FreshTomato, DD-WRT, Openwrt. Later I jumped onto x86 and ARM SBC and the fun just started…

IPfire is one of my favourite choices. I runs smoothly on my test machines (Dell Optiplex Core2Quad and Asus PB60 i5-9500T). Lastly I started to play with RPi4 version 1.4 8GB RAM, 1.8GHz together with your firewall software.

Here I have 1 question. My SBC is 1.8GHz, which is typical for later models of RPi4, as the first ones were clocked at 1.5GHz. IPfire just runs superb on that tiny machine, but I do not know why the clock is downgraded to 1.5GHz, instead of keeping 1.8?

Is that done on purpose? Is that the ‘price’ of models unification? Have anyone changed the clock to 1.8GHz?

I haven’t tried to modify the /boot/config.txt file yet.

Regards,

Cast

[arne_f]

@cast

Here I have 1 question. My SBC is 1.8GHz, which is typical for later models of RPi4, as the first ones were clocked at 1.5GHz. IPfire just runs superb on that tiny machine, but I do not know why the clock is downgraded to 1.5GHz, instead of keeping 1.8?

At release this 1.8 Ghz clock was specified as automatic overclock and i think this automatic overclock need a newer firmware and some kernel modifications that are not present in mainline linux. IPFire has some patches but none special for raspberry pi.

https://git.ipfire.org/?p=people/arne_f/kernel.git;a=shortlog;h=refs/heads/v6.6.y-aarch64

[cast (Cast Casovsky)]

Thank you very much for your information.