linux-kernel - [PATCH v3 3/3] dt-bindings: leds: issi,is31fl3236: add issi,22kHz-pwm property

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Message-Id: <20250708-leds-is31fl3236a-v3-3-d68979b042dd@thegoodpenguin.co.uk>
Date: Tue, 08 Jul 2025 15:59:47 +0100
From: Pawel Zalewski <pzalewski@...goodpenguin.co.uk>
To: Lee Jones <lee@...nel.org>, Pavel Machek <pavel@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>
Cc: linux-leds@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Pavel Machek <pavel@....cz>, devicetree@...r.kernel.org, 
 Pawel Zalewski <pzalewski@...goodpenguin.co.uk>
Subject: [PATCH v3 3/3] dt-bindings: leds: issi,is31fl3236: add
 issi,22kHz-pwm property

Add an additional and optional control property for setting
the output PWM frequency to 22kHz. The default is 3kHz and
this option puts the operational frequency outside of the
audible range.

Signed-off-by: Pawel Zalewski <pzalewski@...goodpenguin.co.uk>
---
 Documentation/devicetree/bindings/leds/issi,is31fl3236.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/issi,is31fl3236.yaml b/Documentation/devicetree/bindings/leds/issi,is31fl3236.yaml
index d0f9add5af01ac06c4bb87b0cd0faec71d0ef37c..5bce0fc48f84c7ae804e6522e312c51ed2d77bc5 100644
--- a/Documentation/devicetree/bindings/leds/issi,is31fl3236.yaml
+++ b/Documentation/devicetree/bindings/leds/issi,is31fl3236.yaml
@@ -42,6 +42,12 @@ properties:
   "#size-cells":
     const: 0
 
+  issi,22kHz-pwm:
+    type: boolean
+    description:
+      When present, the chip's PWM will operate at ~22kHz as opposed
+      to ~3kHz to move the operating frequency out of the audible range.
+
 patternProperties:
   "^led@[1-9a-f]+$":
     type: object

-- 
2.48.1