linux-kernel - Re: [PATCH] dma: Add Xilinx ZDMA device tree Binding Documentation

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Message-ID: <CAGnW=BZpDjoX0tHncmzsMapppi9LKXe9SjCe7M4G3-js0Jm2JQ@mail.gmail.com>
Date:	Wed, 11 Mar 2015 08:21:01 +0530
From:	punnaiah choudary kalluri <punnaia@...inx.com>
To:	Sören Brinkmann <soren.brinkmann@...inx.com>
Cc:	Punnaiah Choudary Kalluri <punnaiah.choudary.kalluri@...inx.com>,
	"robh+dt@...nel.org" <robh+dt@...nel.org>,
	"pawel.moll@....com" <pawel.moll@....com>,
	"mark.rutland@....com" <mark.rutland@....com>,
	"ijc+devicetree@...lion.org.uk" <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"michal.simek@...inx.com" <michal.simek@...inx.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	linux-arm-kernel@...ts.infradead.org,
	punnaiah choudary kalluri <kalluripunnaiahchoudary@...il.com>
Subject: Re: [PATCH] dma: Add Xilinx ZDMA device tree Binding Documentation

On Wed, Mar 11, 2015 at 5:31 AM, Sören Brinkmann
<soren.brinkmann@...inx.com> wrote:
> On Tue, 2015-03-10 at 07:46PM +0530, Punnaiah Choudary Kalluri wrote:
>> Device-tree binding documentation for Xilinx ZDMA Engine
>>
>> Signed-off-by: Punnaiah Choudary Kalluri <punnaia@...inx.com>
>> ---
>>  .../devicetree/bindings/dma/xilinx/zdma.txt        |   76 ++++++++++++++++++++
>>  1 files changed, 76 insertions(+), 0 deletions(-)
>>  create mode 100644 Documentation/devicetree/bindings/dma/xilinx/zdma.txt
>>
>> diff --git a/Documentation/devicetree/bindings/dma/xilinx/zdma.txt b/Documentation/devicetree/bindings/dma/xilinx/zdma.txt
>> new file mode 100644
>> index 0000000..399a3bc
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/dma/xilinx/zdma.txt
>> @@ -0,0 +1,76 @@
>> +Xilinx ZDMA engine, it does support memory to memory transfers,
>> +memory to device and device to memory transfers. It also has flow
>> +control and rate control support for slave/peripheral dma access.
>> +
>> +Xilinx ZynqMP has two instances of general purpose DMA(ZDMA).
>> +one is located in FPD(full power domain) and other is located in
>> +LPD(low power domain).
>> +
>> +ZDMA instance located in FPD is referred as FPDMA and instance located
>> +in LPD is referred as LPDMA.
>> +
>> +FPDMA is configured with 8 DMA channels and AXI bus width is 128 byte.
>> +LPDMA is configured with 8 DMA channels and AXI bus width is 64 byte.
>
> All these implementation details are good background information, but
> shouldn't be part of the binding.

Ok. i will remove then.

Thanks.
Punnaiah
>
>         Sören
> --
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