drm/i915: Workaround to bump rc6 voltage to 450

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 <[email protected]>
CC: Matt Turner <[email protected]>
Signed-off-by: Ben Widawsky <[email protected]>
Reviewed-by: Jesse Barnes <[email protected]>
[danvet: bikeshedded loglevel of the "your bios is broken message" to
debug.]
Signed-off-by: Daniel Vetter <[email protected]>

0 files changed, 0 insertions, 0 deletions