[PATCH v2 0/2] "no-hpd" support in CDNS DP bridge driver

[Tomi Valkeinen]

On 05/04/2023 17:24, Jayesh Choudhary wrote:
> In J721s2 EVM, DP0 HPD is not connected to correct HPD pin on SOC
> which results in HPD detect as always connnected, so when display
> is not connected driver continuously retries to read EDID and DPCD
> registers.

Where is the DP0 HPD connected to? Nowhere? If it's connected to a pin, 
can that pin be used as a GPIO? In other words, do we have a HPD, just 
not with mhdp, or is there just no HPD at all?

  Tomi