[PATCH 2/3] dt-bindings: rtc: Add Mstar SSD20xD RTC devicetree bindings documentation

[Romain Perier]

This adds the documentation for the devicetree bindings of the Mstar
SSD20xD RTC driver.

Signed-off-by: Romain Perier <romain.perier@xxxxxxxxx>
---
 .../bindings/rtc/mstar,ssd20xd-rtc.yaml       | 37 +++++++++++++++++++
 1 file changed, 37 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/mstar,ssd20xd-rtc.yaml

diff --git a/Documentation/devicetree/bindings/rtc/mstar,ssd20xd-rtc.yaml b/Documentation/devicetree/bindings/rtc/mstar,ssd20xd-rtc.yaml
new file mode 100644
index 000000000000..2acd86cce69f
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/mstar,ssd20xd-rtc.yaml
@@ -0,0 +1,37 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/mstar,ssd20xd-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mstar SSD20xD RTC
+
+allOf:
+  - $ref: rtc.yaml#
+
+maintainers:
+  - Daniel Palmer <daniel@xxxxxxxx>
+  - Romain Perier <romain.perier@xxxxxxxxx>
+
+properties:
+  compatible:
+    enum:
+      - mstar,ssd20xd-rtc
+  reg:
+    maxItems: 1
+
+  start-year: true
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    rtc@6800 {
+        compatible = "mstar,ssd20xd-rtc";
+        reg = <0x6800 0x200>;
+    };
+...
-- 
2.39.2