The Netronix EC implements an RTC with the following functionality:

- Calendar-based time keeping with single-second resolution
- Automatic power-on with single-minute resolution
- Alarm at single-second resolution

This binding only supports timekeeping for now.

Signed-off-by: Jonathan Neuschäfer <j.neuschaefer@gmx.net>
---
 .../bindings/mfd/netronix,ntxec.yaml          |  7 +++++
 .../bindings/rtc/netronix,ntxec-rtc.yaml      | 27 +++++++++++++++++++
 2 files changed, 34 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.yaml

diff --git a/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml b/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
index 6562c41c5a9a9..f6a32f46f47bb 100644
--- a/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
+++ b/Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml

@@ -34,6 +34,9 @@ properties:
   pwm:
     $ref: ../pwm/netronix,ntxec-pwm.yaml

+  rtc:
+    $ref: ../rtc/netronix,ntxec-rtc.yaml
+

 required:
   - compatible
   - reg

@@ -61,6 +64,10 @@ examples:
                             compatible = "netronix,ntxec-pwm";
                             #pwm-cells = <1>;
                     };
+
+                    rtc {
+                            compatible = "netronix,ntxec-rtc";
+                    };
             };
     };

diff --git a/Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.yaml b/Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.yaml
new file mode 100644
index 0000000000000..4b301ef7319c8
--- /dev/null
+++ b/Documentation/devicetree/bindings/rtc/netronix,ntxec-rtc.yaml

@@ -0,0 +1,27 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/rtc/netronix,ntxec-rtc.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: RTC functionality in Netronix embedded controller
+
+maintainers:
+  - Jonathan Neuschäfer <j.neuschaefer@gmx.net>
+
+description: |
+  See also Documentation/devicetree/bindings/mfd/netronix,ntxec.yaml
+
+  The Netronix EC contains an RTC, which can be used for time-keeping, alarm,
+  and automatic power-on. Note that not all of this functionality is currently
+  supported in this binding.
+
+allOf:
+  - $ref: "rtc.yaml#"
+
+properties:
+  compatible:
+    const: netronix,ntxec-rtc
+
+required:
+  - compatible
--

2.27.0