Hi Parshuram, On Tue, Mar 02, 2021 at 12:53:50PM +0000, Parshuram Raju Thombare wrote: > Hi Laurent, > > >>> Is this a property of the hardware, that is, are there multiple versions > >>> of this IP core covered by the same compatible string that support HDCP > >>> 1.4 only, DHCP 2.2 only or both ? Or is it a way to select what a given > >>> system will offer ?[] > >> > >> MHDP hardware supports both HDCP 2.2 and 1.4. So, this is a way > >> to select the version of HDCP, system wish to support. > > > > Then I'm not sure this qualifies as a DT property, which should describe > > the system, not configure it. A way for userspace to configure this > > would be better. > > Since this is for source device, I am not sure how useful it is to allow > user to change HDCP version supported. I think doing it in DTS > gives more control over HDCP to system designer/integrator. But how would they do so ? What would be the rationale for selecting a particular version in DT ? I'm not thinking about giving control of this parameter to the end-user, but in the context of an embedded system, it may be useful to select which HDCP versions to offer based on different constraints at runtime. This really seems like a system configuration parameter to me, not a system description. -- Regards, Laurent Pinchart _______________________________________________ dri-devel mailing list dri-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.freedesktop.org/mailman/listinfo/dri-devel
