Re: [PATCH v2 1/3] dmaengine: mpc512x: add device tree binding document

[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

 




2014-06-18 18:56 GMT+04:00 Alexander Popov <a13xp0p0v88@xxxxxxxxx>:
> 2014-06-18 17:37 GMT+04:00 Mark Rutland <mark.rutland@xxxxxxx>:
>> On Wed, Jun 18, 2014 at 11:48:10AM +0100, Alexander Popov wrote:
>>> Introduce a device tree binding document for the MPC512x DMA controller
>>> +Optional properties:
>>> +- #dma-cells: the length of the DMA specifier, must be <1>.
>>> +     Each channel of this DMA controller has a peripheral request line,
>>> +     the assignment is fixed in hardware. This one cell
>>> +     in dmas property of a client device represents the channel number.
>>
>> Surely this is required to be able to refer to DMA channels on the
>> device?
>
> Excuse me, I didn't understand your question.
> Do you inquire about the reason of making #dma-cells an optional property?
> It's optional because device tree based lookup support is made
> optional (part 3/3).

Mark, did I answer your question?
Should I fix anything in this patch series?

Hope for the reply.
Alexander
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html




[Index of Archives]     [Device Tree Compilter]     [Device Tree Spec]     [Linux Driver Backports]     [Video for Linux]     [Linux USB Devel]     [Linux PCI Devel]     [Linux Audio Users]     [Linux Kernel]     [Linux SCSI]     [XFree86]     [Yosemite Backpacking]
  Powered by Linux