[PATCH v2 3/3] dt-bindings: hwmon: emc2305: Add YAML binding documentation for emc2305 driver

From: florin . leotescu
Date: Wed Feb 19 2025 - 08:27:55 EST


From: Florin Leotescu <florin.leotescu@xxxxxxx>

Add yaml-based Device Tree bindings documentation for emc2305 driver
The file provides the necessary structure, configuration
and other parameters for Device Tree definition.

Signed-off-by: Florin Leotescu <florin.leotescu@xxxxxxx>
---
.../devicetree/bindings/hwmon/emc2305.yaml | 95 +++++++++++++++++++
1 file changed, 95 insertions(+)
create mode 100644 Documentation/devicetree/bindings/hwmon/emc2305.yaml

diff --git a/Documentation/devicetree/bindings/hwmon/emc2305.yaml b/Documentation/devicetree/bindings/hwmon/emc2305.yaml
new file mode 100644
index 000000000000..51e2a82d8f25
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/emc2305.yaml
@@ -0,0 +1,95 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/emc2305.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: EMC2305 i2c pwm fan controller
+
+maintainers:
+ - Michael Shych <michaelsh@xxxxxxxxxx>
+
+description: |
+ The driver implements support for Microchip EMC2301/2/3/5 PWM Fan Controller.
+ The EMC2301 Fan Controller supports only one controlled PWM fan channel.
+ The EMC2305 Fan Controller supports up to 5 independently
+ controlled PWM fan drives.
+
+properties:
+ compatible:
+ enum:
+ - hwmon,emc2301
+ - hwmon,emc2302
+ - hwmon,emc2303
+ - hwmon,emc2305
+
+ reg:
+ description: I2C address of the emc2305 device
+
+ pwm_output:
+ description: "PWM output type Push-Pull/ Open Drain"
+ maxItems: 1
+
+ pwm_polarity:
+ description: "PWM polarity"
+ maxItems: 1
+
+ '#cooling-cells':
+ description: "cooling state range"
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ thermal_zones {
+ a55-thermal {
+ trips {
+ atrip0: trip0 {
+ temperature = <55000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+
+ atrip1: trip1 {
+ temperature = <65000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+
+ atrip2: trip2 {
+ temperature = <75000>;
+ hysteresis = <2000>;
+ type = "active";
+ };
+ };
+
+ cooling-maps {
+ map1 {
+ trip = <&atrip0>;
+ cooling-device = <&emc2301 4 6>;
+ };
+
+ map2 {
+ trip = <&atrip1>;
+ cooling-device = <&emc2301 6 8>;
+ };
+
+ map3 {
+ trip = <&atrip2>;
+ cooling-device = <&emc2301 8 10>;
+ };
+ };
+ };
+
+ }
+ emc2301: pwm@2f {
+ compatible = "hwmon,emc2301";
+ reg = <0x2f>;
+ #cooling-cells = <2>;
+ pwm_output = <0x1>;
+ pwm_polarity = <0x1>;
+ };
--
2.34.1