linux-kernel - [PATCH v4 3/7] dt-bindings: hwmon: Add possible new properties to max31827 bindings

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Message-ID: <20230919093456.10592-3-daniel.matyas@analog.com>
Date:   Tue, 19 Sep 2023 12:34:51 +0300
From:   Daniel Matyas <daniel.matyas@...log.com>
To:     unlisted-recipients:; (no To-header on input)
CC:     Daniel Matyas <daniel.matyas@...log.com>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jonathan Corbet <corbet@....net>,
        <linux-hwmon@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <linux-doc@...r.kernel.org>
Subject: [PATCH v4 3/7] dt-bindings: hwmon: Add possible new properties to max31827 bindings

These modify the corresponding bits in the configuration register.

adi,comp-int is a hardware property, because it affects the behavior
of the interrupt signal and whatever it is connected to.

adi,timeout-enable is a hardware property, because it affects i2c
bus operation.

Signed-off-by: Daniel Matyas <daniel.matyas@...log.com>
---

v3 -> v4: Changed property names (adi,flt-q = adi,fault-q; adi,alrm-pol
= adi,alarm-pol). Expressed default values in binding.

v2 -> v3: Changed commit subject and message

v1 -> v2: Added adi,timeout-enable property to binding. Fixed
dt_binding_check errors.

 .../bindings/hwmon/adi,max31827.yaml          | 66 +++++++++++++++++++
 1 file changed, 66 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml b/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml
index 2dc8b07b4d3b..f60e06ab7d0a 100644
--- a/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml
+++ b/Documentation/devicetree/bindings/hwmon/adi,max31827.yaml
@@ -32,6 +32,68 @@ properties:
       Must have values in the interval (1.6V; 3.6V) in order for the device to
       function correctly.
 
+  adi,comp-int:
+    description:
+      If present interrupt mode is used. If not present comparator mode is used
+      (default).
+    type: boolean
+
+  adi,alarm-pol:
+    description:
+      Sets the alarms active state.
+            - 0 = active low
+            - 1 = active high
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [0, 1]
+
+  adi,fault-q:
+    description:
+      Select how many consecutive temperature faults must occur before
+      overtemperature or undertemperature faults are indicated in the
+      corresponding status bits.
+    $ref: /schemas/types.yaml#/definitions/uint32
+    enum: [1, 2, 4, 8]
+
+  adi,timeout-enable:
+    description:
+      Enables timeout. Bus timeout resets the I2C-compatible interface when SCL
+      is low for more than 30ms (nominal).
+    type: boolean
+
+allOf:
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: adi,max31829
+
+    then:
+      properties:
+        adi,alarm-pol:
+          default: 1
+
+    else:
+      properties:
+        adi,alarm-pol:
+          default: 0
+
+  - if:
+      properties:
+        compatible:
+          contains:
+            const: adi,max31827
+
+    then:
+      properties:
+        adi,fault-q:
+          default: 1
+
+    else:
+      properties:
+        adi,fault-q:
+          default: 4
+
+
 required:
   - compatible
   - reg
@@ -49,6 +111,10 @@ examples:
             compatible = "adi,max31827";
             reg = <0x42>;
             vref-supply = <&reg_vdd>;
+            adi,comp-int;
+            adi,alarm-pol = <0>;
+            adi,fault-q = <1>;
+            adi,timeout-enable;
         };
     };
 ...
-- 
2.34.1