On Thu, 2016-03-03 at 12:07 +0900, Masahiro Yamada wrote:
[...]

This patch is derived from Rob Herring' comment
"BTW, we should also kill off "amba-bus" which is an ambiguous term"
in the following thread:
http://lkml.iu.edu/hypermail/linux/kernel/1601.0/01822.html


So, the plan would be like this:

[1] Make device trees not depend on "arm,amba-bus"   (this commit)
[2] New device trees should no longer use "arm,amba-bus" alone.
[3] Go though some releases until we do not care about the backward
compatibility

Why would we stop caring about backwards compatibility? If I was a user
of any of the platforms in question and updated my kernel, I wouldn't
expect to have to debug why it was broken, then install a new dtb to fix
it - which may be a tricky thing to do, depending on the firmware used
to boot Linux.

[4] Drop "arm,amba-bus" from of_default_bus_match_table

-- 
Tixy