[Arm-netbook] HDMI v1.4 Audio Return and Ethernet channels

[Luke Kenneth Casson Leighton]

On Tue, Aug 1, 2017 at 6:44 AM, Richard Wilbur <richard.wilbur at gmail.com> wrote:

> On the other hand, if we plan to support HEC (HDMI Ethernet Channel)
> it requires us to route one more pair of signals as a differential
> pair.

the micro-hdmi connector's pins are entirely packed out.  i know that
there's no extra pins available (there's only 19, 1 of them unused),
and there are definitely no extra pads coming out from the A20 which
could be identified as HEC.

l.