• Ben Skeggs's avatar
    drm/nva3/clk: better pll calculation when no fractional fb div available · 52eba8dd
    Ben Skeggs authored
    The core/mem/shader clocks don't support the fractional feedback divider,
    causing our calculated clocks to be off by quite a lot in some cases.  To
    solve this we will switch to a search-based algorithm when fN is NULL.
    
    For my NVA8 at PL3, this actually generates identical cooefficients to
    the binary driver.  Hopefully that's a good sign, and that does not
    break VPLL calculation for someone..
    Signed-off-by: default avatarBen Skeggs <bskeggs@redhat.com>
    52eba8dd
nva3_pm.c 5.2 KB