Re: [PATCH v3 0/7] of: setup dma parameters using dma-ranges and dma-coherent

Arnd Bergmann
2014-06-02T15:06:41Z

On Monday 02 June 2014 09:24:50 Santosh Shilimkar wrote:
> On Monday 02 June 2014 02:37 AM, Shawn Guo wrote:
> > On Thu, Apr 24, 2014 at 11:30:00AM -0400, Santosh Shilimkar wrote:
> >> Here is an updated v3 of the series. Series introduces support for setting up
> >> dma parameters based on device tree properties like 'dma-ranges' and
> >> 'dma-coherent' and also update to ARM 32 bit port. Earlier version of the
> >> series can be found here [3], [2] and [1].
> >
> > Are these two generic device tree properties documented somewhere under
> > Documentation/devicetree/bindings?
> >
> These bindings have been already in use before this series. But looks like
> they have not been documented. I will do a patch to add description for those
> couple of parameters.

dma-ranges is part of ePAPR, and was documented in some ieee-1275 addenda
before that, but I agree it would be nice to have something in kernel as
well, at the minimum something pointing to the relevant documents.

Arnd