Re: [PATCH v3] powerpc/85xx: Add P2020DS board support

[Kumar Gala <galak@kernel.crashing.org>]

On Apr 22, 2009, at 1:16 PM, Scott Wood wrote:

> Kumar Gala wrote:
>>> What "we care about" at this point is irrelevant, given the PITA  
>>> it would be to change the device trees (or u-boot) that are  
>>> already in use once we do begin to care.
>> Which is exactly why I didn't put it in the .dts right now.
>
> ???
>
>> Today we know NO code exists that cares about "fsl,elbc-1.2". Once  
>> someone adds such code they can also update the .dts to match it.
>
> DTS files and firmware are *MUCH* harder to update once they're out  
> there than the kernel.  Why such opposition to using an appropriate  
> compatible?

Because I want to avoid make the decision right now.  We are on rev1.x  
silicon and I want to avoid greatly having to spawn a new .dts just  
for "fsl,elbc-1.2.1" that has some errata fix in it.  If dtc was  
smarter and I had less duplication between the 40-50 .dts we have for  
our various parts I wouldn't care that match.

> Is there anything in the p2020ds u-boot patches to set the elbc  
> version, or was that just a brush-off?

I was hoping that Poonam would look at doing that, but there isn't  
anything right now.

I can put out some code for u-boot to address the specific elbc issue  
if that will resolve this.

- k