linux-kernel - Re: [PATCH v3 3/7] Documentation: DT: update atmel SSC with DMA binding

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Message-ID: <CACQ1gAhr3gm_O1UyYSUdg8mmnGriAU=kjY6zXwMirojc78dOgg@mail.gmail.com>
Date:	Tue, 9 Jul 2013 15:31:52 +0200
From:	Richard Genoud <richard.genoud@...il.com>
To:	Nicolas Ferre <nicolas.ferre@...el.com>
Cc:	Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>,
	Bo Shen <voice.shen@...el.com>,
	Lars-Peter Clausen <lars@...afoo.de>,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	alsa-devel@...a-project.org, devicetree-discuss@...ts.ozlabs.org
Subject: Re: [PATCH v3 3/7] Documentation: DT: update atmel SSC with DMA binding

2013/7/9 Nicolas Ferre <nicolas.ferre@...el.com>:
> On 09/07/2013 15:19, Richard Genoud :
>
>> 2013/7/9 Richard Genoud <richard.genoud@...il.com>:
>>>
>>> As atmel-ssc can be used with DMA, the documentation should be updated.
>>> Also, a configuration DMA example is given.
>>>
>>> Signed-off-by: Richard Genoud <richard.genoud@...il.com>
>>> ---
>>>   .../devicetree/bindings/misc/atmel-ssc.txt         |   24
>>> ++++++++++++++++++--
>>>   1 file changed, 22 insertions(+), 2 deletions(-)
>>>
>>> diff --git a/Documentation/devicetree/bindings/misc/atmel-ssc.txt
>>> b/Documentation/devicetree/bindings/misc/atmel-ssc.txt
>>> index 38e51ad..96958ca 100644
>>> --- a/Documentation/devicetree/bindings/misc/atmel-ssc.txt
>>> +++ b/Documentation/devicetree/bindings/misc/atmel-ssc.txt
>>> @@ -6,10 +6,30 @@ Required properties:
>>>          - atmel,at91sam9g45-ssc: support dma transfer
>>>   - reg: Should contain SSC registers location and length
>>>   - interrupts: Should contain SSC interrupt
>>> +For dma transfer:
>>> +- dmas: DMA specifier, consisting of a phandle to DMA controller node,
>>> +  the memory interface and SSC DMA channel ID (for tx and rx).
>>> +  See Documentation/devicetree/bindings/dma/atmel-dma.txt for details.
>>> +- dma-names: Must be "tx", "rx".
>>>
>>> -Example:
>>> +
>>> +Examples:
>>>   ssc0: ssc@...bc000 {
>>>          compatible = "atmel,at91rm9200-ssc";
>>>          reg = <0xfffbc000 0x4000>;
>>> -       interrupts = <14 4 5>;
>>> +       interrupts = <14 IRQ_TYPE_LEVEL_HIGH 5>;
>>
>> maybe I should not use macro in the documentation (not sure if I should or
>> not).
>
>
> absolutely.
ok, thanks, changing that in next version.
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