[U-Boot] [PATCH 4/6] fsl_esdhc: Add device tree fixups

[Anton Vorontsov <avorontsov@ru.mvista.com>]

On Thu, Apr 30, 2009 at 12:57:52PM -0500, Scott Wood wrote:
> On Thu, Apr 30, 2009 at 01:20:11AM +0400, Anton Vorontsov wrote:
> > > Isn't there a more global means of doing this?  I don't like having
> > > the 8536/8379 in the driver, itself.
> > 
> > But that's how we prefer bindings nowadays.
> 
> Block version numbers are better, if available.
> 
> > > Actually, there is.  Move these to the config file.  But there should
> > > be a compatible property that works for all esdhc devices.
> > 
> > Starting from MPC83xx/MPC85xx GPIO controllers, we try to differentiate
> > 85xx and 83xx parts.  I.e. 85xx family doesn't specify 83xx family's
> > compatible entries, even if the controllers are compatible. I'm just
> > following the trend.
> 
> I must have missed that memo...
> 
> Why would we not recognize the compatibility if it exists?
> 
> > So the current scheme is:
> > "fsl,device-<chip>", "fsl,device-<first-chip-in-a-family>;
> > 
> > See this discussion:
> > 
> > http://ozlabs.org/pipermail/linuxppc-dev/2008-September/062934.html
> 
> Bah.  I don't see how it's any more "confusing to show 8610 and 8349 in
> the same dev tree" than in is to show, say, 8313 and 8349 in the same
> device tree.  The concept of component A being compatible with component
> B doesn't somehow get mysterious when the systems involved have a
> different type of core.

I feel a bit dizzy.

For a year I thought that we should specify first compatible chip
in the last compatible entry, then I've been told that the first
compatible chip _in a family_ should be specified and we used
this during, say, another six months. And now you're saying that a
block version number is preferred.

Now all possible compatible naming schemes are used in various
device trees for various devices.

Can we have a guideline set in a stone that we all agree with?

In general, I follow maintainer's opinion, so I'm waiting for
Kumar's decision on that matter, and depending on the results
I'll modify the bindings and/or patches.

-- 
Anton Vorontsov
email: cbouatmailru at gmail.com
irc://irc.freenode.net/bd2