• Ben Widawsky's avatar
    drm/i915: Workaround to bump rc6 voltage to 450 · 31643d54
    Ben Widawsky authored
    BIOS should be setting the minimum voltage for rc6 to be 450mV. Old or
    buggy BIOSen may not be doing this, so we correct it for them. Ideally
    customers should update the BIOS as only it would know the optimal
    values for the platform, so we leave that fact as a DRM_ERROR for the
    user to see.
    
    Unfortunately this isn't fixing any of the issues it was targeted to
    fix, but it is documented that we must do it.
    
    CC: Jesse Barnes <jbarnes@virtuousgeek.org>
    CC: Matt Turner <mattst88@gmail.com>
    Signed-off-by: default avatarBen Widawsky <ben@bwidawsk.net>
    Reviewed-by: default avatarJesse Barnes <jbarnes@virtuousgeek.org>
    [danvet: bikeshedded loglevel of the "your bios is broken message" to
    debug.]
    Signed-off-by: default avatarDaniel Vetter <daniel.vetter@ffwll.ch>
    31643d54
intel_pm.c 116 KB