On 05/29/2017 11:53 PM, Hans Verkuil wrote:
For those who are interested in HDMI CEC support I made a little status
document that I intend to keep up to date:
https://hverkuil.home.xs4all.nl/cec-status.txt
My goal is to get CEC supported for any mainlined HDMI driver where
the hardware
supports CEC.
If anyone is working on a CEC driver that I don't know already about,
just drop
me an email so I can update the status.
I also started maintaining a list of DisplayPort to HDMI adapters that
support
CEC. If you have one that works and is not on the list, then please
let me know.
Seeing /dev/cecX is not enough, some adapters do not connect the CEC
pin, so they
won't be able to detect any other CEC devices. See the test
instructions in the
cec-status.txt file on how to make sure the adapter has a working CEC
pin. I
plan to do some more testing this week, so hopefully the list will
expand.
Would you also like a list of known USB-C->HDMI adapters that do not
work? I have a couple that advertise support at DPCD 0x3000 but are not
wired correctly.
-Clint
Thanks!
Hans
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