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Message-ID: <b573370a-13d3-e5cc-781a-0f05a6767f7c@st.com>
Date: Tue, 27 Jun 2017 08:09:35 +0000
From: Pierre Yves MORDRET <pierre-yves.mordret@...com>
To: Rob Herring <robh@...nel.org>
CC: Vinod Koul <vinod.koul@...el.com>,
Mark Rutland <mark.rutland@....com>,
Maxime Coquelin <mcoquelin.stm32@...il.com>,
Alexandre TORGUE <alexandre.torgue@...com>,
Russell King <linux@...linux.org.uk>,
Dan Williams <dan.j.williams@...el.com>,
"M'boumba Cedric Madianga" <cedric.madianga@...il.com>,
Fabrice GASNIER <fabrice.gasnier@...com>,
Herbert Xu <herbert@...dor.apana.org.au>,
Fabien DESSENNE <fabien.dessenne@...com>,
Amelie DELAUNAY <amelie.delaunay@...com>,
"dmaengine@...r.kernel.org" <dmaengine@...r.kernel.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-arm-kernel@...ts.infradead.org"
<linux-arm-kernel@...ts.infradead.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v2 3/5] dt-bindings: stm32-dma: Add property to handle
STM32 DMAMUX
On 06/26/2017 09:33 PM, Rob Herring wrote:
> On Fri, Jun 23, 2017 at 03:00:51PM +0200, Pierre-Yves MORDRET wrote:
>> This patch adds an optional property needed for STM32 DMA controller
>> addressed via STM32 DMAMUX.
>>
>> Signed-off-by: M'boumba Cedric Madianga <cedric.madianga@...il.com>
>> Signed-off-by: Pierre-Yves MORDRET <pierre-yves.mordret@...com>
>> ---
>> Version history:
>> v2:
>> * Typo fix
>> ---
>> ---
>> Documentation/devicetree/bindings/dma/stm32-dma.txt | 5 ++++-
>> 1 file changed, 4 insertions(+), 1 deletion(-)
>>
>> diff --git a/Documentation/devicetree/bindings/dma/stm32-dma.txt b/Documentation/devicetree/bindings/dma/stm32-dma.txt
>> index 4408af6..340c918 100644
>> --- a/Documentation/devicetree/bindings/dma/stm32-dma.txt
>> +++ b/Documentation/devicetree/bindings/dma/stm32-dma.txt
>> @@ -16,6 +16,9 @@ Optional properties:
>> - resets: Reference to a reset controller asserting the DMA controller
>> - st,mem2mem: boolean; if defined, it indicates that the controller supports
>> memory-to-memory transfer
>> +- st,dmamux: boolean; if defined, it indicates that the controller is behind a
>> + DMA multiplexer. In that case, using dma instances doesn't work for DMA
>> + clients. They have to use dma-router instances.
>
> Won't this be obvious looking at the bindings for clients?
>
> In any case, this should be implied by the compatible string.
>
> Rob
>
Not sure what you are asking here.
Py
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