On Thursday 28 February 2013, Shawn Guo wrote:

On Wed, Feb 27, 2013 at 08:54:18PM +0000, Arnd Bergmann wrote:

quoted

On Wednesday 27 February 2013, Shawn Guo wrote:

I wonder if we should leave support for old device trees files around,
at least for a while. Your patch removes a lot of unnecessary code if
we decide not to worry about backwards compatibility here, but I could
imagine that we see a few surprises here.

I'm less concerned by that at this point.  Though platform mxs has been
fully converted to device tree, device tree is still quite new for the
platform.  The incompatible device tree should be acceptable,
considering we have noticed that when adding the temporary DMA binding
for client devices.

/*
 * TODO: This is a temporary solution and should be changed
 * to use generic DMA binding later when the helper get in.
 */

Unless we have these TODO remarks leave in the tree forever, we will
break old device tree sooner or later anyway.  And I would have it
happen sooner than later.

And I would start thinking about maintaining the device tree
compatibility for mxs after generic DMA binding adoption.

Right. It's your decision anyway, and removing the code as early
as possible has some advantages as well.

	Arnd