[PATCH v1 1/3] dt-bindings: rtc: sophgo: add RTC for Sophgo CV1800 series SoC.

[Jingbao Qiu <qiujingbao.dlmu@gmail.com>]

Add devicetree binding to describe the RTC for Sophgo CV1800 SoC.

Signed-off-by: Jingbao Qiu <qiujingbao.dlmu@gmail.com>
---
This patch depends on the clk driver
Clk driver link:
https://lore.kernel.org/all/IA1PR20MB49539CDAD9A268CBF6CA184BBB9FA@IA1PR20MB4953.namprd20.prod.outlook.com/

 .../bindings/rtc/sophgo,cv1800-rtc.yaml       | 40 +++++++++++++++++++
 1 file changed, 40 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/sophgo,cv1800-rtc.yaml

diff --git a/Documentation/devicetree/bindings/rtc/sophgo,cv1800-rtc.yaml b/Documentation/devicetree/bindings/rtc/sophgo,cv1800-rtc.yaml
new file mode 100644
index 000000000000..595d3289b183
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/sophgo,cv1800-rtc.yaml
@@ -0,0 +1,40 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/sophgo,cv1800-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Real Time Clock of the Sophgo CV1800 SoC
+
+maintainers:
+  - Jingbao Qiu <qiujingbao.dlmu@gmail.com>
+
+allOf:
+  - $ref: rtc.yaml#
+
+properties:
+  compatible:
+    const: sophgo,cv1800-rtc
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+required:
+  - compatible
+  - interrupts
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    rtc {
+      compatible = "sophgo,cv1800-rtc";
+      interrupts = <17 IRQ_TYPE_LEVEL_HIGH>;
+      clocks = <&clk 15>;
+    };
-- 
2.25.1