drm/i915: set proper DPIO post divider for VGA on VLV v4

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Supposedly we should use the DAC divider for <300MHz pixel clocks, but as
that doesn't actually work as well as the high freq divider here in
practice, just use the high freq divider all the time.

v2: remove unconditional write (Jesse)
    check for pixel rate properly (Jesse)
v3: give up, the DAC divider apparently doesn't work, and low res modes
    work ok (Jesse)
    remove debug msg (Jesse)

Signed-off-by: Jesse Barnes <jbarnes@virtuousgeek.org>
Tested-by: Kenneth Graunke <kenneth@whitecape.org>
Signed-off-by: Daniel Vetter <daniel.vetter@ffwll.ch>

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Jesse Barnes 2013-05-02 10:48:09 -07:00 • committed by Daniel Vetter

parent 0ef37f3f5e

commit 7df5080bc7

1 changed files with 7 additions and 4 deletions

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drivers/gpu/drm/i915/intel_display.c

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