From: Troy Mitchell <troy.mitchell@linux.dev>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Guenter Roeck <linux@roeck-us.net>,
Paul Walmsley <pjw@kernel.org>,
Palmer Dabbelt <palmer@dabbelt.com>,
Albert Ou <aou@eecs.berkeley.edu>,
Alexandre Ghiti <alex@ghiti.fr>, Yixun Lan <dlan@kernel.org>,
Jonathan Corbet <corbet@lwn.net>,
Shuah Khan <skhan@linuxfoundation.org>,
Randy Dunlap <rdunlap@infradead.org>
Cc: Troy Mitchell <troy.mitchell@linux.dev>,
devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
linux-hwmon@vger.kernel.org, linux-riscv@lists.infradead.org,
spacemit@lists.linux.dev, linux-doc@vger.kernel.org,
Krzysztof Kozlowski <krzysztof.kozlowski@oss.qualcomm.com>
Subject: [PATCH v4 3/6] dt-bindings: hwmon: Add Sensylink CTF2301
Date: Mon, 31 Aug 2026 21:45:37 +0800 [thread overview]
Message-ID: <20260831-ctl2301-v4-3-b335d52a0570@linux.dev> (raw)
In-Reply-To: <20260831-ctl2301-v4-0-b335d52a0570@linux.dev>
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 <krzysztof.kozlowski@oss.qualcomm.com>
Signed-off-by: Troy Mitchell <troy.mitchell@linux.dev>
---
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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next prev parent reply other threads:[~2026-08-31 13:46 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-31 13:45 [PATCH v4 0/6] hwmon: (lm63) Add Sensylink CTF2301 support Troy Mitchell
2026-08-31 13:45 ` [PATCH v4 1/6] dt-bindings: vendor-prefixes: Add Sensylink Troy Mitchell
2026-08-31 13:45 ` [PATCH v4 2/6] dt-bindings: hwmon: Move LM63 family to a dedicated binding Troy Mitchell
2026-08-31 13:45 ` Troy Mitchell [this message]
2026-08-31 13:45 ` [PATCH v4 4/6] hwmon: (lm63) Add Sensylink CTF2301 support Troy Mitchell
[not found] ` <20260831163256.784771F000E9@smtp.kernel.org>
2026-09-01 6:23 ` Troy Mitchell
2026-08-31 13:45 ` [PATCH v4 5/6] riscv: dts: spacemit: Add K3 I2C6 pinctrl state Troy Mitchell
2026-08-31 13:45 ` [PATCH v4 6/6] riscv: dts: spacemit: Add CTF2301 on K3 CoM260 Troy Mitchell
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