From c896e68ec1a0548f29b3d29f6c14a29cf06aa56c Mon Sep 17 00:00:00 2001 From: Boris BREZILLON Date: Thu, 11 Sep 2014 15:18:45 +0200 Subject: [PATCH] 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: Boris BREZILLON Acked-by: Nicolas Ferre Acked-by: Johan Hovold Acked-by: Arnd Bergmann Signed-off-by: Lee Jones --- 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 000000000000..a28569540683 --- /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>; +}; -- 2.11.0