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    Subject[PATCH v4 9/9] mfd: syscon: add Atmel GPBR DT bindings documention
    Date
    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@free-electrons.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@fffffd50 {
    + compatible = "atmel,at91sam9260-gpbr", "syscon";
    + reg = <0xfffffd50 0x10>;
    +};
    --
    1.9.1


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