diff options
| author | Boris BREZILLON <boris.brezillon@free-electrons.com> | 2014-09-23 16:45:12 +0200 |
|---|---|---|
| committer | Nicolas Ferre <nicolas.ferre@atmel.com> | 2014-11-13 16:08:48 +0100 |
| commit | 2c91e61dc97cce57ffd9dd654a6ee284e1f45a1f (patch) | |
| tree | c0ae4bcef8ff4dc19c678d1d916bbf0c00acb138 /Documentation/devicetree/bindings/rtc | |
| parent | a975f47f6e9a4e9762c81973cf2305003aa5b7dc (diff) | |
rtc: at91sam9: add DT bindings documentation
Add RTT bindings documentation.
Signed-off-by: Boris BREZILLON <boris.brezillon@free-electrons.com>
Acked-by: Johan Hovold <johan@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Nicolas Ferre <nicolas.ferre@atmel.com>
Diffstat (limited to 'Documentation/devicetree/bindings/rtc')
| -rw-r--r-- | Documentation/devicetree/bindings/rtc/atmel,at91sam9-rtc.txt | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/rtc/atmel,at91sam9-rtc.txt b/Documentation/devicetree/bindings/rtc/atmel,at91sam9-rtc.txt new file mode 100644 index 000000000000..6ae79d1843f3 --- /dev/null +++ b/Documentation/devicetree/bindings/rtc/atmel,at91sam9-rtc.txt @@ -0,0 +1,23 @@ +Atmel AT91SAM9260 Real Time Timer + +Required properties: +- compatible: should be: "atmel,at91sam9260-rtt" +- reg: should encode the memory region of the RTT controller +- interrupts: rtt alarm/event interrupt +- clocks: should contain the 32 KHz slow clk that will drive the RTT block. +- atmel,rtt-rtc-time-reg: should encode the GPBR register used to store + the time base when the RTT is used as an RTC. + The first cell should point to the GPBR node and the second one + encode the offset within the GPBR block (or in other words, the + GPBR register used to store the time base). + + +Example: + +rtt@fffffd20 { + compatible = "atmel,at91sam9260-rtt"; + reg = <0xfffffd20 0x10>; + interrupts = <1 4 7>; + clocks = <&clk32k>; + atmel,rtt-rtc-time-reg = <&gpbr 0x0>; +}; |