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

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Message-ID: <CACQ1gAg8WQTaz4XkXJCH+-bNU_U3s_1pgmQYoQR3v-KHOzzBTA@mail.gmail.com>
Date:	Tue, 9 Jul 2013 15:19:09 +0200
From:	Richard Genoud <richard.genoud@...il.com>
To:	Mark Brown <broonie@...nel.org>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Liam Girdwood <lgirdwood@...il.com>
Cc:	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,
	Richard Genoud <richard.genoud@...il.com>
Subject: Re: [PATCH v3 3/7] Documentation: DT: update atmel SSC with DMA binding

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).
>  };
> +
> +
> +ssc0: ssc@...10000 {
> +      compatible = "atmel,at91sam9g45-ssc";
> +      reg = <0xf0010000 0x4000>;
> +      interrupts = <28 IRQ_TYPE_LEVEL_HIGH 5>;
> +      dmas = <&dma0 1 AT91_DMA_CFG_PER_ID(13)>,
> +            <&dma0 1 AT91_DMA_CFG_PER_ID(14)>;
same here
> +      dma-names = "tx", "rx";
> +      pinctrl-names = "default";
> +      pinctrl-0 = <&pinctrl_ssc0_tx &pinctrl_ssc0_rx>;
> +      status = "disabled";
> +};
> +
> --
> 1.7.10.4
>



-- 
for me, ck means con kolivas and not calvin klein... does it mean I'm a geek ?
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