Hi,

Am 10.05.21 um 13:13 schrieb Florian Boor:

Am 07.05.21 um 07:47 schrieb Tony Lindgren:

quoted

Hmm OK, sounds like the voltages might be wrong.

sounds like my guess wasn't that wrong.

I did some more research and for me it more and more looks like we are missing
the voltage transitions on frequency change completely.

I added some debug output in omap_vp_forceupdate_scale() and
omap_vc_bypass_scale() and enabled debug output that shows the CPU clock
requency changes. Patch and log are attached.

The interesting stuff starts in line 123 where the first frequency change happens.

Maybe I'm missing something and looking in the wrong place, but if voltage
really never gets adapted on some devices then in the best case the device only
wastes power...

I wonder if this affects all OMAP4460 or the Variscite one only.

Greetings

Florian


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