linux-kernel - Re: [PATCH v2 02/11] mfd: syscon: Add Atmel Matrix bus DT binding documentation

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Message-ID: <20141110095559.GI21424@x1>
Date:	Mon, 10 Nov 2014 09:55:59 +0000
From:	Lee Jones <lee.jones@...aro.org>
To:	Boris Brezillon <boris.brezillon@...e-electrons.com>
Cc:	Samuel Ortiz <sameo@...ux.intel.com>,
	Nicolas Ferre <nicolas.ferre@...el.com>,
	Jean-Christophe Plagniol-Villard <plagnioj@...osoft.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Andrew Victor <linux@...im.org.za>,
	Jean-Jacques Hiblot <jjhiblot@...phandler.com>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>, devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2 02/11] mfd: syscon: Add Atmel Matrix bus DT binding
 documentation

On Wed, 05 Nov 2014, Boris Brezillon wrote:

> The Matrix registers are provided to configure internal bus behavior on
> at91 SoCs.
> Some registers might be access by several drivers (e.g. to configure
> external memory bus timings), hence we declare this register set as a
> syscon device.
> 
> Signed-off-by: Boris Brezillon <boris.brezillon@...e-electrons.com>
> ---
>  .../devicetree/bindings/mfd/atmel-matrix.txt       | 24 ++++++++++++++++++++++
>  1 file changed, 24 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/atmel-matrix.txt
> 
> diff --git a/Documentation/devicetree/bindings/mfd/atmel-matrix.txt b/Documentation/devicetree/bindings/mfd/atmel-matrix.txt
> new file mode 100644
> index 0000000..405cac9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/atmel-matrix.txt
> @@ -0,0 +1,24 @@
> +* Device tree bindings for Atmel Bus Matrix
> +
> +The Bus Matrix registers are used to configure Atmel SoCs internal bus
> +behavior (master/slave priorities, undefined burst length type, ...)
> +
> +Required properties:
> +- compatible:		should be one of the following
> +			"atmel,at91sam9260-matrix", "syscon"
> +			"atmel,at91sam9261-matrix", "syscon"
> +			"atmel,at91sam9263-matrix", "syscon"
> +			"atmel,at91sam9263-matrix", "syscon"
> +			"atmel,at91sam9g45-matrix", "syscon"
> +			"atmel,at91sam9n12-matrix", "syscon"
> +			"atmel,at91sam9x5-matrix", "syscon"
> +			"atmel,sama5d3-matrix", "syscon"
> +- reg:			contains offset/length value of the Bus Matrix
> +			memory region.

Same comments as before:

Acked-by: Lee Jones <lee.jones@...aro.org>

> +Example:
> +
> +matrix: matrix@...fec00 {
> +	compatible = "atmel,sama5d3-matrix", "syscon";
> +	reg = <0xffffec00 0x200>;
> +};

-- 
Lee Jones
Linaro STMicroelectronics Landing Team Lead
Linaro.org │ Open source software for ARM SoCs
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