Where is CPU/GPU clock set?

Echoa

So ive been attempting to overclock this board, but ive never worked with Rockchip devices so i may be doing something wrong.

Ive adjusted the box-dts and dvfs.c but it doesnt recognize freq beyond 1800mhz. What else do i need to change? This seems to work a bit differently than the Qualcomm and Samsung chips im use to.

also is the GPU clock set in the mali/platform/ like with samsungs mali clk?

edit: might i also need to compile uboot aswell?

Echoa

ok I think i have it figured out, i wasnt flashing the resource.img

Now I see new frequencies but when i select anything over 1800mhz my performance drops vs going up

Echoa

Already did, and i was doing it right but the problem was the the Safety Frequency wasnt allowing for the higher frequencies to be used. Currently I am running 2ghz on the CPU, 700mhz on the GPU, and 1333mhz (667 ddr) on the RAM. If anyone else is trying, make sure you set the kernels safety frequency to the one you want to run, default is 1.6ghz. Also, to reach 2ghz+ you will need to use 1.4v or higher and probably need a heatsink to keep it within respectable temperatures. Though with the current settings I have i get 46000 in Antutu Benchmark already.?




Also, keep in mind that 1.4v is that max within the chips spec, going beyond will risk reducing life of the CPU.

Echoa

Thanks Cappy

BTW I saw in the thread you linked my your going for 2.3ghz. Did you add it to the pll table? You can add it to the table in drivers/clk/rockchip and there should be a cpu pll file in there and it default lists to 2.208ghz but you should be able to add up to 2.4ghz assuming 100 is the divider/multiplier max. I haven't tested it yet but if you're hitting end of pll/freq table that's probably why.