linux-kernel - Re: [PATCH v6 9/9] mfd: syscon: add Atmel GPBR DT bindings documention

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Date:	Tue, 23 Sep 2014 10:23:47 +0200
From:	Nicolas Ferre <nicolas.ferre@...el.com>
To:	Boris BREZILLON <boris.brezillon@...e-electrons.com>,
	"Jean-Christophe Plagniol-Villard" <plagnioj@...osoft.com>,
	Alexandre Belloni <alexandre.belloni@...e-electrons.com>,
	Andrew Victor <linux@...im.org.za>,
	Alessandro Zummo <a.zummo@...ertech.it>,
	<rtc-linux@...glegroups.com>,
	"Samuel Ortiz" <sameo@...ux.intel.com>,
	Lee Jones <lee.jones@...aro.org>,
	Johan Hovold <jhovold@...il.com>
CC:	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 v6 9/9] mfd: syscon: add Atmel GPBR DT bindings documention

On 22/09/2014 17:42, Boris BREZILLON :
> The GPBR block provides a set of battery-backed registers that can be used
> to save data which need to be kept when the system is powered down and
> VDD-core is maintained by an external battery.
> 
> A typical usage is the RTT block (when used as an RTC) which needs one of
> those registers to save the current time.
> 
> Signed-off-by: Boris BREZILLON <boris.brezillon@...e-electrons.com>
Acked-by: Nicolas Ferre <nicolas.ferre@...el.com>

> ---
>  Documentation/devicetree/bindings/mfd/atmel,gpbr.txt | 15 +++++++++++++++
>  1 file changed, 15 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/mfd/atmel,gpbr.txt
> 
> diff --git a/Documentation/devicetree/bindings/mfd/atmel,gpbr.txt b/Documentation/devicetree/bindings/mfd/atmel,gpbr.txt
> new file mode 100644
> index 0000000..a285695
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mfd/atmel,gpbr.txt
> @@ -0,0 +1,15 @@
> +* Device tree bindings for Atmel GPBR (General Purpose Backup Registers)
> +
> +The GPBR are a set of battery-backed registers.
> +
> +Required properties:
> +- compatible:		"atmel,at91sam9260-gpbr", "syscon"
> +- reg:			contains offset/length value of the GPBR memory
> +			region.
> +
> +Example:
> +
> +gpbr: gpbr@...ffd50 {
> +	compatible = "atmel,at91sam9260-gpbr", "syscon";
> +	reg = <0xfffffd50 0x10>;
> +};
> 


-- 
Nicolas Ferre
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