Thread (6 messages) 6 messages, 4 authors, 2026-01-16

Re: [PATCH v3 1/3] dt-bindings: hwmon: ti,tmp108: Add P3T1035,P3T2030

From: Krzysztof Kozlowski <krzk@kernel.org>
Date: 2026-01-16 07:22:30
Also in: linux-doc, linux-hwmon, lkml

On 15/01/2026 12:14, Mayank Mahajan wrote:
quoted hunk ↗ jump to hunk
Document the NXP P3T1035 and P3T2030 compatibles in TMP108.

Signed-off-by: Mayank Mahajan <redacted>
---
V1 -> V2:
- No changes in v2.
V2 -> V3:
- Add P3T1035 fallback for P3T2030 as they are functionally identical.
- Add comment in the description explaining the use of P3T2030.

 .../devicetree/bindings/hwmon/ti,tmp108.yaml  | 24 ++++++++++++-------
 1 file changed, 16 insertions(+), 8 deletions(-)
diff --git a/Documentation/devicetree/bindings/hwmon/ti,tmp108.yaml b/Documentation/devicetree/bindings/hwmon/ti,tmp108.yaml
index a6f9319e068d..1f540c623de6 100644
--- a/Documentation/devicetree/bindings/hwmon/ti,tmp108.yaml
+++ b/Documentation/devicetree/bindings/hwmon/ti,tmp108.yaml
@@ -4,27 +4,35 @@
 $id: http://devicetree.org/schemas/hwmon/ti,tmp108.yaml#
 $schema: http://devicetree.org/meta-schemas/core.yaml#

-title: TMP108/P3T1085(NXP) temperature sensor
+title: TMP108/P3T1035/P3T1085/P3T2030 temperature sensor

 maintainers:
   - Krzysztof Kozlowski <krzk@kernel.org>

 description: |
-  The TMP108/P3T1085(NXP) is a digital-output temperature sensor with a
-  dynamically-programmable limit window, and under- and overtemperature
-  alert functions.
+  The TMP108 or NXP P3T Family (P3T1035, P3T1085 and P3T2030) is a digital-
+  output temperature sensor with a dynamically-programmable limit window,
+  and under- and over-temperature alert functions.

-  P3T1085(NXP) support I3C.
+  NXP P3T Family (P3T1035, P3T1085 and P3T2030) supports I3C.

   Datasheets:
     https://www.ti.com/product/TMP108
     https://www.nxp.com/docs/en/data-sheet/P3T1085UK.pdf
+    https://www.nxp.com/docs/en/data-sheet/P3T1035XUK_P3T2030XUK.pdf
+
+  P3T2030 is functionally identical to P3T1035. Hence, device tree nodes that
+  use the P3T2030 must provide a fallback compatible string of "nxp,p3t1035"
Drop the sentence. Schema already tells that. Never repeat the schema in
free text. It's like adding comments to code:

ptr = kzalloc()
/* Check for null pointer after allocation */
if (!ptr)
	return -ENOMEM

This is worse coding. Write concise, clearly readable code.

With this fixed:

Reviewed-by: Krzysztof Kozlowski <redacted>

Best regards,
Krzysztof
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