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Commit c896e68e authored by Boris BREZILLON's avatar Boris BREZILLON Committed by Lee Jones
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mfd: syscon: Add Atmel GPBR DT bindings documention 



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: default avatarBoris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: default avatarNicolas Ferre <nicolas.ferre@atmel.com>
Acked-by: default avatarJohan Hovold <johan@kernel.org>
Acked-by: default avatarArnd Bergmann <arnd@arndb.de>
Signed-off-by: default avatarLee Jones <lee.jones@linaro.org>
parent 2adb3b8e

Documentation/devicetree/bindings/mfd/atmel,gpbr.txt

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* 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@fffffd50 {

	compatible = "atmel,at91sam9260-gpbr", "syscon";

	reg = <0xfffffd50 0x10>;

};