Describe the RTC as used in the ASPEED BMC SoCs.
Signed-off-by: Joel Stanley <joel@xxxxxxxxx>
---
.../devicetree/bindings/rtc/rtc-aspeed.txt | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
create mode 100644 Documentation/devicetree/bindings/rtc/rtc-aspeed.txt
diff --git a/Documentation/devicetree/bindings/rtc/rtc-aspeed.txt b/Documentation/devicetree/bindings/rtc/rtc-aspeed.txt
new file mode 100644
index 000000000000..f9f7defd557e
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rtc-aspeed.txt
@@ -0,0 +1,19 @@
+ASPEED BMC RTC
+==============
+
+Required properties:
+ - compatible: should be one of the following
+ * aspeed,ast2400-rtc for the ast2400
+ * aspeed,ast2500-rtc for the ast2500
+ * aspeed,ast2600-rtc for the ast2600
+
+ - reg: physical base address of the controller and length of memory mapped
+ region
+
+Example:
+
+ rtc@1e781000 {
+ compatible = "aspeed,ast2400-rtc";
+ reg = <0x1e781000 0x18>;
+ status = "disabled";
+ };
--
2.20.1
