Re: Re: [PATCH 02/18] drm/bridge: Add HDMI output fmt helper

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Dne sreda, 17. marec 2021 ob 17:08:07 CET je Neil Armstrong napisal(a):
> On 17/03/2021 16:43, Maxime Ripard wrote:
> > The atomic_get_output_bus_fmts bridge callback is there to list the
> > available formats for output by decreasing order of preference.
> > 
> > On HDMI controllers, we have a fairly static list that will depend on
> > what the HDMI sink is capable of and the BPC our controller can output.
> > 
> > The dw-hdmi driver already has that code done in a fairly generic
> > manner, so let's turn that code into an helper for all the HDMI
> > controllers to reuse.
> 
> This code was based on the capabilities of the DW-HDMI IP, copying it as-is
> doesn't make much sense, we should be able to filter out formats the HDMI IP
> doesn't support.

HDMI standard has pretty strict requirements which formats should be 
supported, so cores should have very similar capabilities.

Best regards,
Jernej


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