USB-DCP-5V-1.5A protocol and Librem 5

[dos]

@Quarnero

Anker PowerPort Atom PD 1 might emit up to 5.17V (while Librem 5 gets/receives up to 5.06V toward the end of charging, as voltage registered during the termination process of charging) and that is only “thing” that is not entirely up to my liking (cannot qualify this as bad behavior as wasn’t researching much about)

That’s not a problem at all; in fact, that’s a normal, wanted and expected behavior that’s well within the tolerance ranges (and it can change depending on load, cable resistance and temperature anyway).

@Hristo

And if not from the list, are there any particular specs to look for? Apart from the delivery of 5V/3A. Like some PD or BC 1.2 marking.
And how to know in advance if the display is going to work or not?

Doing PD 2.0 with 5V/3A and USB-C DisplayPort alt-mode should be all you need. Other than that, we’re entering a territory of incompatibilities because of bugs and protocol violations, so it’s hard to say more without doing tests with an actual device in question.