[PATCH 1/2] clocksource: sunxi: Add new compatibles

Hi Rob,

On Mon, Feb 03, 2014 at 02:11:28PM -0600, Rob Herring wrote:

On Mon, Feb 3, 2014 at 1:45 PM, Maxime Ripard
[off-list ref] wrote:

quoted

Hi Daniel,

(Adding DT mailing-list in CC)

On Mon, Feb 03, 2014 at 05:36:03PM +0100, Daniel Lezcano wrote:

quoted

On 02/02/2014 02:37 PM, Maxime Ripard wrote:

quoted

The Allwinner A10 compatibles were following a slightly different compatible
patterns than the rest of the SoCs for historical reasons. Add compatibles
matching the other pattern to the timer driver for consistency, and keep the
older one for backward compatibility.

Hi Maxime,

is it really needed to keep the old pattern ?

We agreed during the ARM Kernel Summit to consider the DT as a stable
ABI.

While I'd be ok with removing the older ones, that also means that we
would break the boot of newer kernels with older DT, so yes, we
actually need to keep the old compatibles.

It all depends if that would really cause problems for a given
platform. So if Allwinner DT support is a moving target, then changing
is probably okay. For example, if anyone using the platform is going
to need to update their DTB to add more nodes to get various features
anyway, then breaking it is not all that important.

We keep adding new stuff to the DT, yes, so I guess we can be
considered a moving target. Thanks for your input!

Maxime

-- 
Maxime Ripard, Free Electrons
Embedded Linux, Kernel and Android engineering
http://free-electrons.com
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