hint: maybe use pwm regulator for cpu on x96x6 box as well?
hexdump0815 opened this issue · 3 comments
hello,
first a very big thank you for all your efforts to get new hardware running (h313/h616/h618/rk2566/rk3528 tv boxes for instance)!
it looks like you are using a fixed voltage for the cpu regulator / opp points in your x96x6 dts - for me using a pwm regulator like in https://github.com/gregkh/linux/blob/master/arch/arm64/boot/dts/rockchip/rk3566-box-demo.dts or in your new rk3538 dts seems to be working better - seems to get better performance for me and should result in less power consumption. i did not test it deeply, but something like this worked quite well for some rk3328 tv box without a pmic in the past for me as well. actually my only testing so far was to use the mentioned box-demo dts instead of your x96x6 dts, which had the side effects that the builtin ethernet worked with that, but usb not. when i find some time, my plan is to try to make something like the best of both worlds out of the demo-box and your x96x6 dts.
all the best wishes and keep up your good work - hexdump
@hexdump0815
Thx for kind words!
And sorry for late replay - vacation period....
May you pls try dts with 06be37c changes?
In this commit i switched cpu_vdd to pwm-regulator and went back to dtsi cpu opp modes
@warpme - thanks a lot, i'll give it a try during the next days
sorry for the long delay, but i can finally confirm that this is working well and gives better performance than with the old fixed regulator