> According to the datasheet, the typical ADC conversion time is 2 ms, but
> no minimum or maximum values are provided.

That sentence makes me want to increase the delay to 4ms.

Maybe we can ask someone at Analog in parallel? I recently found this
patch from an Analog developer in my inbox "[RESEND PATCH] drm: bridge:
adv7511: Fix low refresh rate register for ADV7533/5" Or do you guys
know a better contact?