dt-bindings: hwmon: pmbus: Add bindings for Silergy SQ24860

Add devicetree binding documentation for the Silergy SQ24860 eFuse.

The device is a PMBus hardware monitoring device which reports voltage,
current, power, and temperature telemetry. The board-specific IMON
resistor value is described with silergy,rimon-micro-ohms.

Signed-off-by: Ziming Zhu <ziming.zhu@silergycorp.com>
Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
Link: https://lore.kernel.org/r/20260612030304.5165-2-zmzhu0630@163.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>

Documentation/devicetree/bindings/hwmon/pmbus/silergy,sq24860.yaml

@@ -0,0 +1,74 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+
+$id: http://devicetree.org/schemas/hwmon/pmbus/silergy,sq24860.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Silergy SQ24860 eFuse
+
+maintainers:
+  - Ziming Zhu <ziming.zhu@silergycorp.com>
+
+description:
+  The Silergy SQ24860 is an integrated, high-current circuit protection and
+  power management device with PMBus interface.
+
+properties:
+  compatible:
+    const: silergy,sq24860
+
+  reg:
+    maxItems: 1
+
+  silergy,rimon-micro-ohms:
+    description:
+      Micro-ohms value of the resistance installed between the IMON pin and
+      the ground reference.
+
+  interrupts:
+    description: PMBus SMBAlert interrupt.
+    maxItems: 1
+
+  regulators:
+    type: object
+    description:
+      List of regulators provided by this controller.
+
+    properties:
+      vout:
+        $ref: /schemas/regulator/regulator.yaml#
+        type: object
+        unevaluatedProperties: false
+
+    additionalProperties: false
+
+required:
+  - compatible
+  - reg
+  - silergy,rimon-micro-ohms
+
+additionalProperties: false
+
+examples:
+  - |
+
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        hw-monitor@40 {
+            compatible = "silergy,sq24860";
+            reg = <0x40>;
+
+            interrupt-parent = <&gpio>;
+            interrupts = <42 8>;
+            silergy,rimon-micro-ohms = <1600000000>;
+
+            regulators {
+                cpu0_vout: vout {
+                    regulator-name = "main_cpu0";
+                };
+            };
+        };
+    };