linux-kernel - [PATCH 4/4] dt-bindings: hwmon: Add Amphenol ChipCap 2

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Message-Id: <20231020-topic-chipcap2-v1-4-087e21d4b1ed@gmail.com>
Date:   Wed, 08 Nov 2023 13:29:59 +0100
From:   Javier Carrasco <javier.carrasco.cruz@...il.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Jean Delvare <jdelvare@...e.com>,
        Guenter Roeck <linux@...ck-us.net>,
        Jonathan Corbet <corbet@....net>,
        Liam Girdwood <lgirdwood@...il.com>,
        Mark Brown <broonie@...nel.org>
Cc:     Rob Herring <robh@...nel.org>, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-hwmon@...r.kernel.org,
        linux-doc@...r.kernel.org,
        Javier Carrasco <javier.carrasco.cruz@...il.com>
Subject: [PATCH 4/4] dt-bindings: hwmon: Add Amphenol ChipCap 2

Add device tree bindings and an example for the ChipCap 2 humidity
and temperature sensor.

Signed-off-by: Javier Carrasco <javier.carrasco.cruz@...il.com>
---
 .../bindings/hwmon/amphenol,chipcap2.yaml          | 72 ++++++++++++++++++++++
 1 file changed, 72 insertions(+)

diff --git a/Documentation/devicetree/bindings/hwmon/amphenol,chipcap2.yaml b/Documentation/devicetree/bindings/hwmon/amphenol,chipcap2.yaml
new file mode 100644
index 000000000000..f0ab20eb418a
--- /dev/null
+++ b/Documentation/devicetree/bindings/hwmon/amphenol,chipcap2.yaml
@@ -0,0 +1,72 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/hwmon/amphenol,chipcap2.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: ChipCap 2 humidity and temperature iio sensor
+
+maintainers:
+  - Javier Carrasco <javier.carrasco.cruz@...il.com>
+
+description: |
+  Relative humidity and temperature sensor on I2C bus.
+
+  Datasheets:
+    https://www.amphenol-sensors.com/en/telaire/humidity/527-humidity-sensors/3095-chipcap-2
+
+properties:
+  compatible:
+    enum:
+      - amphenol,cc2dxx
+      - amphenol,cc2dxxs
+
+  reg:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 3
+    description: |
+      The device provides three optional interrupts. READY indicates that
+      a measurement was finished. LOW indicates a low humidity alarm and
+      HIGH a high humidity alarm.
+      All interrupts must be IRQ_TYPE_RISING_EDGE.
+
+  interrupt-names:
+    items:
+      - const: READY
+      - const: LOW
+      - const: HIGH
+
+  vdd-supply:
+    description:
+      Dedicated, controllable supply-regulator to reset the device and
+      enter in command mode. If defined, it must provide a GPIO for its
+      control.
+      If not defined, no alarms will be available.
+
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        humidity@28 {
+            compatible = "amphenol,cc2dxxs";
+            reg = <0x28>;
+            interrupt-parent = <&gpio>;
+            interrupts = <4 IRQ_TYPE_EDGE_RISING>,
+                         <5 IRQ_TYPE_EDGE_RISING>,
+                         <6 IRQ_TYPE_EDGE_RISING>;
+            interrupt-names = "READY", "LOW", "HIGH";
+            vdd-supply = <&reg_vdd>;
+        };
+    };

-- 
2.39.2