Subject: DT bindings as ABI [was: Do we have people interested in device tree janitoring / cleanup?]

From: [email-masked] (Richard Cochran)
Date: Fri, 26 Jul 2013 10:01:15 +0200

On Thu, Jul 25, 2013 at 03:37:53PM -0600, Jason Gunthorpe wrote:
> 
> We use DT has a kernel configuration input. Our environment is
> designed to guarantee 100% that the kernel and DT match exactly. DT
> very deliberately isn't an ABI boundary in our systems.

Think about what you just said.

The DT describes the *hardware* not the kernel. Why should you ever
need to update your DT at all?

(Hint: the answer is, because the DT system is broken.)

Thanks,
Richard