linux-kernel - Re: [PATCH v4 10/14] mmc: omap_hsmmc: add generic DMA request support to the DT binding

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Message-ID: <20130111175454.GI14149@atomide.com>
Date:	Fri, 11 Jan 2013 09:54:55 -0800
From:	Tony Lindgren <tony@...mide.com>
To:	Matt Porter <mporter@...com>
Cc:	Sekhar Nori <nsekhar@...com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Benoit Cousson <b-cousson@...com>,
	Russell King <linux@....linux.org.uk>,
	Vinod Koul <vinod.koul@...el.com>,
	Rob Landley <rob@...dley.net>, Chris Ball <cjb@...top.org>,
	Devicetree Discuss <devicetree-discuss@...ts.ozlabs.org>,
	Linux OMAP List <linux-omap@...r.kernel.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux DaVinci Kernel List 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux Documentation List <linux-doc@...r.kernel.org>,
	Linux MMC List <linux-mmc@...r.kernel.org>,
	Linux SPI Devel List 
	<spi-devel-general@...ts.sourceforge.net>,
	Arnd Bergmann <arnd@...db.de>, Dan Williams <djbw@...com>,
	Rob Herring <rob.herring@...xeda.com>
Subject: Re: [PATCH v4 10/14] mmc: omap_hsmmc: add generic DMA request
 support to the DT binding

* Matt Porter <mporter@...com> [130110 21:47]:
> The binding definition is based on the generic DMA request binding.

Acked-by: Tony Lindgren <tony@...mide.com>
 
> Signed-off-by: Matt Porter <mporter@...com>
> ---
>  .../devicetree/bindings/mmc/ti-omap-hsmmc.txt      |   25 +++++++++++++++++++-
>  1 file changed, 24 insertions(+), 1 deletion(-)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
> index ed271fc..826cc51 100644
> --- a/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
> +++ b/Documentation/devicetree/bindings/mmc/ti-omap-hsmmc.txt
> @@ -20,8 +20,28 @@ ti,dual-volt: boolean, supports dual voltage cards
>  ti,non-removable: non-removable slot (like eMMC)
>  ti,needs-special-reset: Requires a special softreset sequence
>  ti,needs-special-hs-handling: HSMMC IP needs special setting for handling High Speed
> +dmas: DMA controller phandle and DMA request value ordered pair
> +One tx and one rx pair is required.
> +dma-names: DMA request names. These strings correspond 1:1 with
> +the ordered pairs in dmas. The RX request must be "rx" and the
> +TX request must be "tx".
> +
> +Examples:
> +
> +[hwmod populated DMA resources]
> +
> +	mmc1: mmc@...809c000 {
> +		compatible = "ti,omap4-hsmmc";
> +		reg = <0x4809c000 0x400>;
> +		ti,hwmods = "mmc1";
> +		ti,dual-volt;
> +		bus-width = <4>;
> +		vmmc-supply = <&vmmc>; /* phandle to regulator node */
> +		ti,non-removable;
> +	};
> +
> +[generic DMA request binding]
>  
> -Example:
>  	mmc1: mmc@...809c000 {
>  		compatible = "ti,omap4-hsmmc";
>  		reg = <0x4809c000 0x400>;
> @@ -30,4 +50,7 @@ Example:
>  		bus-width = <4>;
>  		vmmc-supply = <&vmmc>; /* phandle to regulator node */
>  		ti,non-removable;
> +		dmas = <&edma 24
> +			&edma 25>;
> +		dma-names = "tx", "rx";
>  	};
> -- 
> 1.7.9.5
> 
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