Document Alphascale asm9260 RTC bindings
Signed-off-by: Oleksij Rempel <linux@xxxxxxxxxxxxxxxx>
---
.../bindings/rtc/alphascale,asm9260-rtc.txt | 25 ++++++++++++++++++++++
1 file changed, 25 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/alphascale,asm9260-rtc.txt
diff --git a/Documentation/devicetree/bindings/rtc/alphascale,asm9260-rtc.txt b/Documentation/devicetree/bindings/rtc/alphascale,asm9260-rtc.txt
new file mode 100644
index 0000000..2c0ff3c
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/alphascale,asm9260-rtc.txt
@@ -0,0 +1,25 @@
+* Alphascale asm9260 SoC Real Time Clock
+
+Required properties:
+- compatible: Should be "alphascale,asm9260-rtc"
+- reg: Physical base address of the controller and length
+ of memory mapped region.
+- interrupts: IRQ line for the RTC.
+- clocks: Reference to the clock entry.
+- clock-names: should contain:
+ * "ahb" for the SoC RTC clock
+
+Optional:
+- calibration: calibration value for 1 sec period.
+ Max value for forward calibration is 0x1ffff (131071),
+ Min value for backward calibration is 0xfffe0001 (-131071).
+
+Example:
+rtc0: rtc@800a0000 {
+ compatible = "alphascale,asm9260-rtc";
+ reg = <0x800a0000 0x100>;
+ clocks = <&acc CLKID_AHB_RTC>;
+ clock-names = "ahb";
+ interrupts = <2>;
+ calibration = <0x129c>;
+};
--
2.5.0
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