Re: [PATCH 1/4] ARM: dts: am437x-gp-evm: add HDMI support

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On 13/12/2019 12:42, Laurent Pinchart wrote:

I think the correct way would be to have DRM framework understand that we have two displays, which
are mutually exclusive, and the display pipeline drivers would have the means to switch the gpio.
And that the display setup could be communicated properly to the userspace, and the userspace would
understand it. I don't think any of those exists.

Isn't this what possible_clones in drm_encoder is for ? It notifies
userspace of mutual exclusions between encoders.

Hmm, how would that work here? Isn't encoder cloning about having two encoders, which take the input from the same video source, and then outputting to two displays?

 Tomi

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