Hi Rob, Mark, Jon, Setting aside the future plan, anyway we should avoid relying on an undocumented compatible string. (and we should avoid its spread as Rob pointed out.) I rephrase the git-log (no update in the code-diff). Could you check v2, please? https://patchwork.kernel.org/patch/8529701/ Better? 2016-03-04 5:23 GMT+09:00 Rob Herring <robh+dt@xxxxxxxxxx>: > On Thu, Mar 3, 2016 at 4:12 AM, Jon Medhurst (Tixy) <tixy@xxxxxxxxxx> wrote: >> 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. > > If no one notices, then there is no ABI. Things break all the time > when nobody cares. It will be more than a few releases for sure. We > may never get to step 3, but we should do step 1 so people stop > copy-n-pasting this in step 2. > > Rob > -- > To unsubscribe from this list: send the line "unsubscribe devicetree" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html -- Best Regards Masahiro Yamada -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
