diff --git a/Documentation/devicetree/bindings/i2c/tsd,mule-i2c-mux.yaml b/Documentation/devicetree/bindings/i2c/tsd,mule-i2c-mux.yaml
new file mode 100644
index 000000000000..ac9dfc936272
--- /dev/null
+++ b/Documentation/devicetree/bindings/i2c/tsd,mule-i2c-mux.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i2c/tsd,mule-i2c-mux.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mule I2C multiplexer
+
+maintainers:
+  - Farouk Bouabid <farouk.bouabid@cherry.de>
+  - Quentin Schulz <quentin.schulz@cherry.de>
+
+description: |
+  This module is part of the Mule I2C multi-function device. For more
+  details see ../mfd/tsd,mule.yaml.
+
+  Mule I2C-mux configures the active device that can be accessed on address
+  0x6f through the config register.
+
+      +--------------------------------------------------+
+      | Mule                                             |
+  0x18|    +---------------+                             |
+  -------->|Config register|----+                        |
+      |    +---------------+    |                        |
+      |                         V_                       |
+      |                        |  \          +--------+  |
+      |                        |   \-------->| dev #0 |  |
+      |                        |   |         +--------+  |
+  0x6f|                        | M |-------->| dev #1 |  |
+  ---------------------------->| U |         +--------+  |
+      |                        | X |-------->| dev #2 |  |
+      |                        |   |         +--------+  |
+      |                        |   /-------->| dev #3 |  |
+      |                        |__/          +--------+  |
+      +--------------------------------------------------+
+
+
+allOf:
+  - $ref: /schemas/i2c/i2c-mux.yaml#
+
+properties:
+  compatible:
+    const: tsd,mule-i2c-mux
+
+required:
+  - compatible
+
+unevaluatedProperties: false
diff --git a/Documentation/devicetree/bindings/mfd/tsd,mule.yaml b/Documentation/devicetree/bindings/mfd/tsd,mule.yaml
new file mode 100644
index 000000000000..ab532340a17c
--- /dev/null
+++ b/Documentation/devicetree/bindings/mfd/tsd,mule.yaml
@@ -0,0 +1,82 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/mfd/tsd,mule.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Mule I2C multi function device
+
+maintainers:
+  - Farouk Bouabid <farouk.bouabid@cherry.de>
+  - Quentin Schulz <quentin.schulz@cherry.de>
+
+description:
+  Mule is an MCU that emulates a set of I2C devices, among which an amc6821
+  device and an I2C mux that exposes more emulated devices. These two devices
+  share the same I2C address. Only the I2C mux uses register (0xff) as a config
+  register.
+
+properties:
+  compatible:
+    const: tsd,mule
+
+  reg:
+    maxItems: 1
+
+  "#address-cells":
+    const: 1
+
+  "#size-cells":
+    const: 0
+
+patternProperties:
+  "^fan(@[0-9a-f]+)?$":
+    $ref: /schemas/trivial-devices.yaml
+
+  "^i2c-mux(@[0-9a-f]+)?$":
+    $ref: /schemas/i2c/tsd,mule-i2c-mux.yaml
+
+required:
+  - "#address-cells"
+  - "#size-cells"
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        mule@18 {
+            compatible = "tsd,mule";
+            reg = <0x18>;
+            #address-cells = <1>;
+            #size-cells = <0>;
+
+            fan@18 {
+                compatible = "ti,amc6821";
+                reg = <0x18>;
+            };
+
+            i2c-mux {
+                compatible = "tsd,mule-i2c-mux";
+                #address-cells = <1>;
+                #size-cells = <0>;
+
+                i2c@0 {
+                    reg = <0x0>;
+                    #address-cells = <1>;
+                    #size-cells = <0>;
+
+                    rtc@6f {
+                        compatible = "isil,isl1208";
+                        reg = <0x6f>;
+                    };
+                };
+            };
+        };
+    };
+...
