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.