Hello Doug,

On 08/04/2014 05:42 PM, Doug Anderson wrote:

quoted

Both of you mentioned limitations of cros_ec i2c passthrough leading to
a forked tps65090 driver downstream - I don't think I can be of help
there, as I guess simply copying a driver will not be an option. ;)
https://code.google.com/p/chromium/issues/detail?id=391797

Yup, I think this will be real work for someone.  I made a quick
attempt and failed at it and I haven't had time to work on it since
(and don't necessarily expect to have time in the near future)...  I
think it is possible for anyone versed in i2c to figure this out based
on what I already posted and what's in our local tree...

I posted a series [0] with the remaining cleanups/fixes for cros_ec that are on
the downstream Chrome OS 3.8 kernel. Once these lands it will be easier to add
the missing cros_ec functionality on top. I've these on my TODO list but I was
going to give priority to the cros_ec user-space interface, LPC bus support and
vboot context over the tps65090 Spring support since I don't have access to a
Spring machine to test.

quoted

For the touchpad it seems DT support has landed in the input tree as
"atmel,maxtouch". Backporting just that patch does not make it work
though. (Tried the rejected pinctrl approach to be on the safe side.)
https://code.google.com/p/chromium/issues/detail?id=371114
https://patchwork.kernel.org/patch/3976801/

This is the same work as needed for pit and pi, I believe.  Perhaps
Javier or Dmitry has this on their todo list?

Yes, I've this on my TODO list as well.

Best regards,
Javier

[0]: http://www.spinics.net/lists/linux-samsung-soc/msg34897.html