[PATCH v2 2/4] dt-bindings: hwmon: Add Kandou KB9002

[Andy Chung via B4 Relay <devnull+Andy.Chung.amd.com@kernel.org>]

From: Andy Chung <Andy.Chung@amd.com>

Add device tree bindings for the Kandou KB9002 PCIe 5.0 retimer, an
SMBus target that exposes an aggregated die temperature.

Signed-off-by: Andy Chung <Andy.Chung@amd.com>
---
 .../devicetree/bindings/hwmon/kandou,kb9002.yaml   | 45 ++++++++++++++++++++++
 1 file changed, 45 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/kandou,kb9002.yaml b/Documentation/devicetree/bindings/hwmon/kandou,kb9002.yaml
new file mode 100644
index 000000000000..67859e9d63c2
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/kandou,kb9002.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/kandou,kb9002.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Kandou KB9002 PCIe 5.0 retimer
+
+maintainers:
+  - Andy Chung <andy.chung@amd.com>
+
+description: |
+  The Kandou KB9002 is an 8-lane PCIe 5.0 retimer that exposes a
+  firmware-controlled SMBus 3.0 target on its sideband interface.
+  The host can query the aggregated maximum die temperature and the
+  running firmware version through that target.
+
+  The 7-bit SMBus address is selected by three SMB_ADDR straps and
+  ranges from 0x20 to 0x27.
+
+properties:
+  compatible:
+    const: kandou,kb9002
+
+  reg:
+    minimum: 0x20
+    maximum: 0x27
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        retimer@20 {
+            compatible = "kandou,kb9002";
+            reg = <0x20>;
+        };
+    };

-- 
2.34.1