2012/9/26 Mark Brown <broo...@opensource.wolfsonmicro.com>:
> On Wed, Sep 26, 2012 at 12:03:44AM +0900, Inki Dae wrote:
>> 2012/9/25 Laurent Pinchart <laurent.pinch...@ideasonboard.com>:
>> > Aren't DT bindings considered as an ABI, and required to be supported more 
>> > or
>> > less forever ? If you merge this DT binding you'll have to keep supporting 
>> > it.
>> > That's why DT bindings should not be rushed in.
>> is ABI required for DT binding?  I know DT binding parses just lcd
>> timing data from device tree file so ABI isn't needed. but when it
>> comes to DT, I'm novice yet so there may be my missing point. could
>> you tell me why DT bindings are considered as an ABI? if there is my
>> missing point, will consider it again.
> It's supposed to be possible to ship a DT with a board and then boot any
> OS or OS version on the board.  If the meaning of the DT keeps changing
> then this becomes impossible, you need to keep changing the DT when you
> change the thing that parses it (rendering the whole exercise pointless).

thank you for your comments. got it. DT is built as an binary(dtb) and
the dtb file should be re-used without any modifications. will keep
this patch until the videomode helper will be merged to mainline so
that this could be modified based on videomode helper later.

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