Is it possible to overclock the Rock Pi 4?

[stuartiannaylor]

Yeah with the Pi4 you need a fan really I have one with a heatsink and all it does is delay thermal throttling rather than negate it.
GPU is already 200% on Pi4 levels but presume that is also DTS/overlay I am not sure what speed google ran the GPU but like cpu @ 2Ghz/1.5Ghz its likely more than the stock Rk3399.
I have a Rpi3b & Rpi3b+ and yeah you can OC and they run cool and VC4 still sucks like crazy still couldn’t replay a 1080p video in Chromium raspberries chosen browser.

Pi4 heralds an end to Raspberry with me irrespective of what Soc / SBC I use, so much of what the say varies from snakeoil marketeering to absolute BS.
What really rankles me is they benefit massively from charitable status and huge community input but they repay by constantly focusing on the needs of their commercial arm.
Just my opinion but feck raspberry, I purchased a Pi4 and it was exactly what I expected and its an Arm Soc at a reasonable price but the rest about 4k or desktop replacement is total BS.
I would rather have a product that doesn’t make such claims that is actually capable than be fed that BS from raspberry that we are here for education needs.
Total BS raspberry and feck you as never will I buy another of your products.

[Askmewho]

Indeed, maybe not on chromium, but on ppsspp vc4 shines (on mesa) compared to the actual state of panfrost ( its a shame indeed) but panfrost and the rk3399 has all the potencial to amaze on real performance on next months

[stuartiannaylor]

The rockpi4.dts has this include
#include “rk3399-opp.dtsi”

Guess you could just change that to
#include “rk3399-op1-opp.dtsi”

Which was the google OP1 Rk3399 chip.
Dunno how it will go though.

[Askmewho]

Ok! But thats a cpu boost only. Anyone know to set higher values to gpu on an unpacked dtb? Rpi boards use threadx to manipulate “easily” and override the values (at freedom cost?) It would be great if we could manipulate some boot parameters on rockpi4 too. Whats necessary to get something similar to rpi parameters stuart?

[stuartiannaylor]

There isn’t you are just stuck with being approx 200% faster than a Pi4.
Prob is but dunno the midguard mali gpus are quite complex beasts in comparison its Arm voodoo and what will be the Panfrost optimisations

[stuartiannaylor]

I have been running with “rk3399-op1-opp.dtsi”
The rockpi4 at least mine as it is active cooling seems quite happy to run at the below

1512000
1512000
1512000
1512000
2016000
2016000

https://openbenchmarking.org/result/1907231-HV-1709271TY15

Also doh GPU table is in there

	gpu_opp_table: opp-table2 {
		compatible = "operating-points-v2";

		opp00 {
			opp-hz = /bits/ 64 <200000000>;
			opp-microvolt = <800000>;
		};
		opp01 {
			opp-hz = /bits/ 64 <297000000>;
			opp-microvolt = <800000>;
		};
		opp02 {
			opp-hz = /bits/ 64 <400000000>;
			opp-microvolt = <825000>;
		};
		opp03 {
			opp-hz = /bits/ 64 <500000000>;
			opp-microvolt = <850000>;
		};
		opp04 {
			opp-hz = /bits/ 64 <600000000>;
			opp-microvolt = <925000>;
		};
		opp05 {
			opp-hz = /bits/ 64 <800000000>;
			opp-microvolt = <1075000>;
		};

PS if you want the compiled op1 speed dtb and just swapout the current
https://1drv.ms/u/s!AocmAh35i26QiUpyj_c7Dg9dtzUl

The 800mhz is already overclocked or at least the top side of T860 deployments dunno, maybe and may you can OC Ram haven’t found that yet. Maybe 850 but really this is the territory of the 16nm T880

[edit]
Ram I have found and lols I aint getting my head round that its a dtsi in uboot but it very much voodoo and some complex ram timing patterns that have not got the faintest clue.

[Askmewho]

Actually, cpu overclock to 2.0 ghz its really easy on armbian 5.2 kernel. that speed its specified on armbian-config, but default its 1800 obviously. so, whats the normal clock of the gpu being 800 mhz an overclock??

[stuartiannaylor]

If you look at the arm docs

Graphics and Multimedia Processors | Mali-T860 and Mali-T880 GPUs – Arm...

says 650mhz there so guessing 800 for the t860 is reasonably high.
800 is what Google chromebooks went for a max and expecting there might not be a whole load more to be had as they where also fairly aggressive with the 2.0/1.5Ghz

Just edit the dtsi and try but that is up to you

[stuartiannaylor]

The 2.0/1.5Ghz overclock seems really stable with my silicon.
Keep running benches as stability tests.

https://openbenchmarking.org/result/1907252-HV-1906275HV72

[ahillelt]

@stuartiannaylor , I downloaded your ‘rk3399-rock-pi-4.dtb’, running Radxa’s Ubtunu Server instance, are you saying that the dtb can just be swapped out on a live instance, and reboot with overclock settings?

[stuartiannaylor]

Its the mainline dtb mv old dtb to .bak copy new and yeah.
Definately works with manjaro that way or what you can do is compile your own kernel.

Or git clone current radxa master kernel
zcat /proc/config.gz > .config clone current config to .config in kernel root directory

go to mainline grab /arch/arm64/boot/dts/rockchip/rk3399-op1-opp.dtsi
place in your radxa kernel git clone @ /arch/arm64/boot/dts/rockchip/rk3399-op1-opp.dtsi
Change the line in /arch/arm64/boot/dts/rockchip/rockpi-4b-linux.dts #include "rk3399-opp.dtsi" to #include "rk3399-op1-opp.dtsi"
make
You don’t need the kernel and a long way but it will make a dts for you that you can do the same with if there is any difference as the above.
Or convert both to dts and just make the cpu table changes then convert back

[ahillelt]

For some reason I can’t get Manjaro to boot on my RockPi 4A.

I’ll give Armbian a shot, Ubuntu Server works, but there is no ‘rk3399-rock-pi-4.dtb’ to swap in their dtbs folder.

Using Rock Pi 4 Minimal (Manjaro) - https://manjaro.org/download/arm8-rockpi4-minimal/

Simply doesn’t boot up.

[stuartiannaylor]

Dunno about Pi4A but that is just the bt/wifi but there is a long boot delay when upgraded to 5.2.
The is no printk console and you have to wait but yeah that is the right link.

[ahillelt]

Yeah only thing removed in 4A is bt/wifi, otherwise it’s the same (1gb ram). I can get Armbian working, Ubuntu Server as well. Manjaro just doesn’t boot up. How long was the boot delay on first install for you?

[stuartiannaylor]

Its not that bad 5.1 30secs+, 5.2 there are errors and its bad 3mins+

[ahillelt]

@stuartiannaylor, in Manjaro what’s the pathway for ‘rk3399-rock-pi-4.dtb’? I couldn’t get it to work on the 4A but want to see what it maps to on Ubuntu.

[stuartiannaylor]

The overlays and everthing with the 4.4 kernel is different.
Use https://dl.radxa.com/rockpi4/images/debian/rockpi4-debian-stretch-desktop-arm64-20190730_2022-gpt.img.gz as stretch check overlays as 2.0ghz in there

[Dante4]

Just in case someone will need that. You need to do

sudo apt-get install rockpi4-dtbo

to get /boot/hw_intfc.conf file in Ubuntu Server

[Askmewho]

to “overclock” the gpu to 800 mhz just

echo performance | sudo tee /sys/class/drm/card1/device/devfreq/devfreq0/governor

if its presente on the dbt it should work
mine was at 200 mhz on powersave, clocked to just 200 mhz and then ive get it to 800 so easily.

[stuartiannaylor]

Not sure if that is an OC you are just turning scaling off so that its running at max all time even when no workload.
Its very easy to use the op1 dts inclusion and compile and get a big/little OC but have not seen an increase with the GPU on the default.