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

Santosh Shilimkar
2014-06-02T15:55:30Z

Arnd,

On Monday 02 June 2014 11:06 AM, Arnd Bergmann wrote:
> 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.
>
We are thinking of updating 'Documentation/devicetree/bindings/dma/dma.txt'
to add the information for these extra two parameters.

Is that fine or any other suggestion ?

Regards,
Santosh