Comment 4 for bug 894073
Revision history for this message
| Ricardo Salveti (rsalveti) wrote Re: [Bug 894073] Re: [regression] No DVI output on the PandaBoard with kernel 3.1.0-1402-linaro-lt-omap | #4 |
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35a32c5
(Get the code!)
On Wed, Nov 23, 2011 at 8:01 PM, warmcat <email address hidden> wrote:
> At request of Seb, we backported Tomi's hdmi patches that went upstream
> after 3.1 release from tracking to tilt-3.1. They provide some good
> architectural improvements but expose a big problem with two heads on
> dss, there is no mediation about who owns the common pll. Result is
> that i had to disable the new dvi "panel" driver to stop hdmi
> workability getting destroyed by dvi resetting the pll to something
> else.
Marking as confirmed at the LT side then.
> I discussed with Tomi he says he may add support for pll management but
> 'no promises'. In themeanwhile best way is deconfigure dvi panel (i
> guess you didn't configure it) and just use hdmi.
With previous kernel the DRM driver would probe and enable the DVI
panel if detected, don't know if the behavior has changed for this
kernel.