[PATCH v3 1/2] dt-bindings: iio: temperature: Add NXP P3T175x support

Lakshay Piplani
2025-09-29T09:53:59Z

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Add bindings for the NXP P3T175x (P3T1750/P3T1755) temperature
sensor, supporting both I2C & I3C interfaces.

Signed-off-by: Lakshay Piplani <lakshay.piplani@nxp.com>
---
V2 -> V3: Changes since V2:
- Removed nxp,interrupt-mode and nxp,fault-queue properties from DT binding
- Updated compatible strings:
- nxp,p3t1750-iio → nxp,p3t1750dp
- nxp,p3t1755-iio → nxp,p3t1755dp
V1 -> V2: Changes since V1:
- Dropped nxp,alert-active-high
- Fixed YAML formatting, line wrapping, and examples

.../bindings/iio/temperature/nxp,p3t1755.yaml | 62 +++++++++++++++++++
1 file changed, 62 insertions(+)
create mode 100644 Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml

diff --git a/Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml b/Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml
new file mode 100644
index 000000000000..16a01fa81251
--- /dev/null
+++ b/Documentation/devicetree/bindings/iio/temperature/nxp,p3t1755.yaml
@@ -0,0 +1,62 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/iio/temperature/nxp,p3t1755.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: NXP P3T175xDP Temperature Sensor
+
+maintainers:
+ - Lakshay Piplani <lakshay.piplani@nxp.com>
+
+description: |
+ Datasheet: https://www.nxp.com/docs/en/data-sheet/P3T1755.pdf
+
+ P3T175xDP (P3T1750/P3T1755) is a digital temperature sensor with a range of
+ -40°C to +125°C and a 12-bit resolution. It supports communication over both
+ I2C and I3C interfaces.
+
+ The I2C interface supports up to 32 static addresses and provides an ALERT
+ output to signal when temperature thresholds are crossed.
+
+ The I3C interface supports In-Band interrupts (IBI) in interrupt mode,
+ allowing the device to notify the controller of threshold events without
+ dedicated alert pin.
+
+properties:
+ compatible:
+ enum:
+ - nxp,p3t1750dp
+ - nxp,p3t1755dp
+
+ interrupts:
+ maxItems: 1
+
+ reg:
+ maxItems: 1
+ description: |
+ In I2C mode, the device supports up to 32 static addresses.
+ In I3C mode, the 'reg' property encodes a triplet of
+ <static-address BCR PID> used for device matching.
+ Static address is optional if matching is done via PID.
+
+required:
+ - compatible
+ - reg
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ temp-sensor@48 {
+ compatible = "nxp,p3t1755dp";
+ reg = <0x48>;
+ interrupt-parent = <&gpio2>;
+ interrupts = <3 IRQ_TYPE_EDGE_FALLING>;
+ };
+ };
--
2.25.1