linux-kernel - [PATCH 2/2] dt-bindings: iio: temperature: add MLX90635 device bindings

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Message-Id: <2e8b4a7d3ef4bc1c53bd0a849e4c31eaf2477f6b.1700648165.git.cmo@melexis.com>
Date:   Wed, 22 Nov 2023 11:27:21 +0100
From:   Crt Mori <cmo@...exis.com>
To:     Jonathan Cameron <jic23@...nel.org>,
        Rob Herring <robh+dt@...nel.org>
Cc:     linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Crt Mori <cmo@...exis.com>
Subject: [PATCH 2/2] dt-bindings: iio: temperature: add MLX90635 device bindings

Add device tree bindings for MLX90635 Infra Red contactless temperature
sensor.

Signed-off-by: Crt Mori <cmo@...exis.com>
---
 .../iio/temperature/melexis,mlx90635.yaml     | 60 +++++++++++++++++++
 1 file changed, 60 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/iio/temperature/melexis,mlx90635.yaml

diff --git a/Documentation/devicetree/bindings/iio/temperature/melexis,mlx90635.yaml b/Documentation/devicetree/bindings/iio/temperature/melexis,mlx90635.yaml
new file mode 100644
index 000000000000..96463121a806
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/temperature/melexis,mlx90635.yaml
@@ -0,0 +1,60 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/temperature/melexis,mlx90635.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Melexis MLX90635 contactless Infra Red temperature sensor
+
+maintainers:
+  - Crt Mori <cmo@...exis.com>
+
+description: |
+  https://www.melexis.com/en/documents/documentation/datasheets/datasheet-mlx90635
+
+  There are various applications for the Infra Red contactless temperature
+  sensor and MLX90635 is most suitable for consumer applications where
+  measured object temperature is in range between -20 to 100 degrees
+  Celsius with relative error of measurement 2 degree Celsius in
+  object temperature range for industrial applications, while just 0.2
+  degree Celsius for human body measurement applications. Since it can
+  operate and measure ambient temperature in range of -20 to 85 degrees
+  Celsius it is suitable also for outdoor use.
+
+  Be aware that electronics surrounding the sensor can increase ambient
+  temperature. MLX90635 can be calibrated to reduce the housing effect via
+  already existing EEPROM parameters.
+
+  Since measured object emissivity effects Infra Red energy emitted,
+  emissivity should be set before requesting the object temperature.
+
+properties:
+  compatible:
+    const: melexis,mlx90635
+
+  reg:
+    maxItems: 1
+    description: Default is 0x3a, but can be reprogrammed.
+
+  vdd-supply:
+    description: provide VDD power to the sensor (check datasheet for voltage).
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+        temp-sensor@3a {
+            compatible = "melexis,mlx90635";
+            reg = <0x3a>;
+            vdd-supply = <&ldo4_reg>;
+        };
+    };
+...
-- 
2.40.1