Re: [PATCH V2 0/9] ARM: tegra: add platform suspend support

[Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>]

On 03/13/2013 07:26 PM, Joseph Lo wrote:
> On Thu, 2013-03-14 at 01:34 +0800, Stephen Warren wrote:
>> On 03/13/2013 12:04 AM, Joseph Lo wrote:
>> ...
>>> BTW, I want to mention one thing about PMC DT bindings. Because I can't
>>> add all of the PMC DT bindings in one time, the PMC is related to too
>>> many devices to work for runtime PM and power domain control. And some
>>> wake up sources control for deep sleep mode (LP0). They are still under
>>> developing for upstream. May I add more bindings for PMC later?
>>
>> With DT you are supposed to define the complete DT binding for the HW up
>> front. There have been some hints that incrementally defining bindings
>> will start to get push-back. How hard is it in this case to simply
>> define the entire binding right now?
>>
> There are still two main features for PMC that we need to define
> bindings/properties in DT. One is power main the other wake up source.
> But we are not there yet. Because I don't have drivers to verify them is
> enough or not. If I add all the bindings right now, I believe it will be
> modify later.

Since the DT is supposed to be a representation of the HW, and not a
representation of what a particular driver needs, I'm not sue why you'd
need to be able to test a driver before you could design a DT binding.