[PATCH v14 1/3] dt-bindings: hwmon: fan: Add fan binding to schema

Billy Tsai
2024-02-21T10:41:44Z

From: Naresh Solanki <naresh.solanki@9elements.com>

Add common fan properties bindings to a schema.

Bindings for fan controllers can reference the common schema for the
fan

child nodes:

patternProperties:
"^fan@[0-2]":
type: object
$ref: fan-common.yaml#
unevaluatedProperties: false

Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Naresh Solanki <naresh.solanki@9elements.com>
Signed-off-by: Billy Tsai <billy_tsai@aspeedtech.com>
---
.../devicetree/bindings/hwmon/fan-common.yaml | 79 +++++++++++++++++++
1 file changed, 79 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/fan-common.yaml

diff --git a/Documentation/devicetree/bindings/hwmon/fan-common.yaml b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
new file mode 100644
index 000000000000..0fb738081699
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/fan-common.yaml
@@ -0,0 +1,79 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/fan-common.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Common Fan Properties
+
+maintainers:
+ - Naresh Solanki <naresh.solanki@9elements.com>
+ - Billy Tsai <billy_tsai@aspeedtech.com>
+
+properties:
+ max-rpm:
+ description:
+ Max RPM supported by fan.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 100000
+
+ min-rpm:
+ description:
+ Min RPM supported by fan.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 1000
+
+ pulses-per-revolution:
+ description:
+ The number of pulse from fan sensor per revolution.
+ $ref: /schemas/types.yaml#/definitions/uint32
+ maximum: 4
+
+ tach-div:
+ description:
+ Divisor for the tach sampling clock, which determines the sensitivity of the tach pin.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ target-rpm:
+ description:
+ The default desired fan speed in RPM.
+ $ref: /schemas/types.yaml#/definitions/uint32
+
+ fan-driving-mode:
+ description:
+ Select the driving mode of the fan.(DC, PWM and so on)
+ $ref: /schemas/types.yaml#/definitions/string
+ enum: [ dc, pwm ]
+
+ pwms:
+ description:
+ PWM provider.
+ maxItems: 1
+
+ "#cooling-cells":
+ const: 2
+
+ cooling-levels:
+ description:
+ The control value which correspond to thermal cooling states.
+ $ref: /schemas/types.yaml#/definitions/uint32-array
+
+ tach-ch:
+ description:
+ The tach channel used for the fan.
+ $ref: /schemas/types.yaml#/definitions/uint8-array
+
+ label:
+ description:
+ Optional fan label
+
+ fan-supply:
+ description:
+ Power supply for fan.
+
+ reg:
+ maxItems: 1
+
+additionalProperties: true
+
+...
--
2.25.1