| Message ID | 1411400563-570-10-git-send-email-boris.brezillon@free-electrons.com |
|---|---|
| State | Superseded, archived |
| Headers | show |
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@free-electrons.com> Acked-by: Nicolas Ferre <nicolas.ferre@atmel.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>; > +}; >
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>; +};
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