tree 718b8bdb20f7539a6175cb2cda6a09deffbfb050
parent 261a3ad42605f5824072d1410d3c5f7b93f7cad8
author Benjamin Herrenschmidt <benh@kernel.crashing.org> 1409817021 +1000
committer Dave Airlie <airlied@redhat.com> 1410745065 +1000

drm/ast: Don't assume DVO enabled means SIL164 on uninitialized chips

It looks like the AST2400 comes up with the DVO enable bit set,
which causes us to incorrectly assume we have a SIL164 regardless
of the value of the scratch registers setup by the BMC firmware.

So let's limit that test to the case where the chip has already
been setup by a BIOS.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: Dave Airlie <airlied@redhat.com>