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

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Message-Id: <20250929094543.2512264-1-lakshay.piplani@nxp.com>
Date: Mon, 29 Sep 2025 15:15:42 +0530
From: Lakshay Piplani <lakshay.piplani@....com>
To: linux-kernel@...r.kernel.org,
	linux-iio@...r.kernel.org,
	jic23@...nel.org,
	dlechner@...libre.com,
	nuno.sa@...log.com,
	andy@...nel.org,
	marcelo.schmitt1@...il.com,
	gregkh@...uxfoundation.org,
	viro@...iv.linux.org.uk,
	peterz@...radead.org,
	jstephan@...libre.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	devicetree@...r.kernel.org,
	jonathan.cameron@...wei.com
Cc: vikash.bansal@....com,
	priyanka.jain@....com,
	shashank.rebbapragada@....com,
	Lakshay Piplani <lakshay.piplani@....com>
Subject: [PATCH v3 1/2] dt-bindings: iio: temperature: Add NXP P3T175x support

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

Signed-off-by: Lakshay Piplani <lakshay.piplani@....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@....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