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

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Message-Id: <20250219133221.2641041-4-florin.leotescu@oss.nxp.com>
Date: Wed, 19 Feb 2025 15:32:21 +0200
From: florin.leotescu@....nxp.com
To: Jean Delvare <jdelvare@...e.com>,
	Guenter Roeck <linux@...ck-us.net>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Michael Shych <michaelsh@...dia.com>,
	linux-hwmon@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: viorel.suman@....com,
	carlos.song@....com,
	linux-arm-kernel@...ts.infradead.org,
	imx@...ts.linux.dev,
	Florin Leotescu <florin.leotescu@....com>
Subject: [PATCH v2 3/3] dt-bindings: hwmon: emc2305: Add YAML binding documentation for emc2305 driver

From: Florin Leotescu <florin.leotescu@....com>

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@....com>
---
 .../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@...dia.com>
+
+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