25 Jul
2018
25 Jul
'18
6:12 a.m.
On Tue, Jul 24, 2018 at 4:41 PM, Richard Wilbur richard.wilbur@gmail.com wrote:
One fly in the ointment is that, at least according to my understanding, power on the HDMI is part of VESA (Video Electronics Standards Association) DDC (Display Data Channel) support.
As such the power is supplied by the video signal source which is the I2C bus master on the DDC bus. This applies to all of the incarnations of VESA DDC on VGA, DVI, and HDMI.
it's also only a maximum of something like 400mA.
l.