Thread (7 messages) 7 messages, 1 author, 2026-08-31

[PATCH v4 3/6] dt-bindings: hwmon: Add Sensylink CTF2301

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COLD40d REVIEWED: 1 (0M)

From: Troy Mitchell <hidden>
Date: 2026-08-31 13:46:31
Also in: linux-devicetree, linux-hwmon, linux-riscv, lkml, spacemit
Subsystem: hardware monitoring, open firmware and flattened device tree bindings, the rest · Maintainers: Guenter Roeck, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

Revision v4 of 4 in this series; 1 review trailer.

Revisions (4)
  1. v2 [diff vs current]
  2. v3 [diff vs current]
  3. v4 current
  4. v5 [diff vs current]
Add the Sensylink CTF2301 temperature sensor and fan controller to the
LM63 family binding. The chip follows the LM63 register model and can
provide a thermal cooling device when #cooling-cells is present.

Do not provide a national,lm63 fallback because the CTF2301 is not fully
compatible with LM63. It uses different conversion-rate encodings,
extended local-temperature registers, additional fan lookup table
entries, and device-specific PWM and ALERT/TACH configuration. An older
LM63 driver would therefore not operate the device correctly.

Acked-by: Krzysztof Kozlowski <redacted>
Signed-off-by: Troy Mitchell <redacted>
---
 Documentation/devicetree/bindings/hwmon/national,lm63.yaml | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)
diff --git a/Documentation/devicetree/bindings/hwmon/national,lm63.yaml b/Documentation/devicetree/bindings/hwmon/national,lm63.yaml
index f2e0993cfbef..4c8d0a15fbd1 100644
--- a/Documentation/devicetree/bindings/hwmon/national,lm63.yaml
+++ b/Documentation/devicetree/bindings/hwmon/national,lm63.yaml
@@ -12,7 +12,8 @@ maintainers:
 description: |
   The LM63 family provides local and remote temperature monitoring together
   with fan speed monitoring and PWM fan control. Supported devices include
-  the National Semiconductor LM63, LM64 and LM96163.
+  the National Semiconductor LM63, LM64 and LM96163, and the Sensylink
+  CTF2301.
 
 allOf:
   - $ref: hwmon-common.yaml#
@@ -23,6 +24,7 @@ properties:
       - national,lm63
       - national,lm64
       - national,lm96163
+      - sensylink,ctf2301
 
   reg:
     maxItems: 1
-- 
2.55.0
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