* Grant Likely [off-list ref] [110614 15:02]:

On Tue, Jun 14, 2011 at 3:42 PM, Arnd Bergmann [off-list ref] wrote:

quoted

On Tuesday 14 June 2011 23:21:52 Nicolas Pitre wrote:

quoted

Otherwise, if the revision number is effectively non probable, then I
would guess it is the device tree's purpose to carry that information
somehow, right? ?Maybe this can be appended to the board name string?

That's what I meant with adding it to "compatible", which is a list of
strings with varying degrees of detailed information, e.g.

?ti,omap7
?ti,omap7-squirrelboard
?ti,omap7-squirrelboard-v3
?ti,omap7-squirrelboard-v3.17b

You can match the list against a specific revision or a less specific
identifier if you just want to know whether you are on a squirrelboard
or a hamsterboard.

Yes, that's generally the right way to handle it.  In practice I've
not seen many cases where it is really required, but it doesn't hurt
if somebody wants to include it in the DT for their board.

Appending the ATAG_REVISION to "compatible" and also setting system_rev
to ATAG_REVISION like we already do should work.

Just to clarify things abit: We just can't generate .dts files for all
existing hardware. It would require dumping out system_rev and other ATAGs
on tens or hundeds of pieces of hardware.

Regards,

Tony