From: Dang Huynh <dang.huynh@mainlining.org>

Add documentation describing the RTC found in RDA8810PL SoC.

Signed-off-by: Dang Huynh <dang.huynh@mainlining.org>
---
 .../devicetree/bindings/rtc/rda,8810pl-rtc.yaml    | 30 ++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/Documentation/devicetree/bindings/rtc/rda,8810pl-rtc.yaml b/Documentation/devicetree/bindings/rtc/rda,8810pl-rtc.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..3ceae294921cc3211cd775d9b3890393196faf82
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/rda,8810pl-rtc.yaml
@@ -0,0 +1,30 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/rda,8810pl-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RDA Micro RDA8810PL Real Time Clock
+
+maintainers:
+  - Dang Huynh <dang.huynh@mainlining.org>
+
+properties:
+  compatible:
+    const: rda,8810pl-rtc
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    rtc@1a06000 {
+      compatible = "rda,8810pl-rtc";
+      reg = <0x1a06000 0x1000>;
+    };

-- 
2.51.0