[PATCH V3 1/2] of: Add generic device tree DMA helpers

On Thursday 03 May 2012, Stephen Warren wrote:

quoted

+    - #dma-channels: Number of DMA channels supported by the controller.
+    - #dma-requests: Number of DMA requests signals supported by the controller.

I don't see why those properties would be mandatory in device tree. They
don't appear to be involved in parsing a DMA client's DMA specifier.
Shouldn't this information be provided at run-time by the DMA controller
driver. If it supports different HW models with different capabilities,
then it certainly could represent those values in DT, but I don't think
this should be required.

Agreed. I would list them as 'optional' though, so that every specific
binding that needs these will have to use the same format.

	Arnd