From 547e9d942f3011c5ec5f4763c51dfcdb4b37b9dd Mon Sep 17 00:00:00 2001
From: Nick Hawkins <nick.hawkins@hpe.com>
Date: Tue, 3 Jan 2023 14:36:51 -0600
Subject: [PATCH] dt-bindings: hwmon: Add hpe,gxp-fan-ctrl

Create documentation for the binding to support control of the fans on
HPE platforms.

Signed-off-by: Nick Hawkins <nick.hawkins@hpe.com>
Reviewed-by: Rob Herring <robh@kernel.org>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Link: https://lore.kernel.org/r/20230103203654.59322-3-nick.hawkins@hpe.com
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
---
 .../bindings/hwmon/hpe,gxp-fan-ctrl.yaml      | 45 +++++++++++++++++++
 1 file changed, 45 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/hwmon/hpe,gxp-fan-ctrl.yaml

diff --git a/Documentation/devicetree/bindings/hwmon/hpe,gxp-fan-ctrl.yaml b/Documentation/devicetree/bindings/hwmon/hpe,gxp-fan-ctrl.yaml
new file mode 100644
index 000000000000..4a52aac6be72
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/hpe,gxp-fan-ctrl.yaml
@@ -0,0 +1,45 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/hpe,gxp-fan-ctrl.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: HPE GXP Fan Controller
+
+maintainers:
+  - Nick Hawkins <nick.hawkins@hpe.com>
+
+description: |
+  The HPE GXP fan controller controls the fans through an external CPLD
+  device that connects to the fans.
+
+properties:
+  compatible:
+    const: hpe,gxp-fan-ctrl
+
+  reg:
+    items:
+      - description: Fan controller PWM
+      - description: Programmable logic
+      - description: Function 2
+
+  reg-names:
+    items:
+      - const: base
+      - const: pl
+      - const: fn2
+
+required:
+  - compatible
+  - reg
+  - reg-names
+
+additionalProperties: false
+
+examples:
+  - |
+    fan-controller@1000c00 {
+      compatible = "hpe,gxp-fan-ctrl";
+      reg = <0x1000c00 0x200>, <0xd1000000 0xff>, <0x80200000 0x100000>;
+      reg-names = "base", "pl", "fn2";
+    };