On Thu, Feb 13, 2020 at 3:57 PM Nicolas Boichat <drinkcat@xxxxxxxxxxxx> wrote: > > > [snip] > > > But then there's a slight problem: panfrost_devfreq uses a bunch of > > > clk_get_rate calls, and the clock PLLs (at least on MTK platform) are > > > never fully precise, so we get back 299999955 for 300 Mhz and > > > 799999878 for 800 Mhz. That means that the kernel is unable to keep > > > devfreq stats as neither of these values are in the table: > > > [ 4802.470952] devfreq devfreq1: Couldn't update frequency transition > > > information. > > > The kbase driver fixes this by remembering the last set frequency, and > > > reporting that to devfreq. Should we do that as well or is there a > > > better fix? This one is my bad, I was missing this patch in my forklift to 4.19: 22bd4df9dadf46f drm/panfrost: devfreq: Round frequencies to OPPs (should really try to boot that board on linux-next, but that's for another time)
