linux-kernel - [PATCH v2 3/3] dt-bindings: leds: is31fl3236: add issi,22kHz-pwm property

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Message-Id: <20250627-leds-is31fl3236a-v2-3-f6ef7495ce65@thegoodpenguin.co.uk>
Date: Fri, 27 Jun 2025 11:20:37 +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 v2 3/3] dt-bindings: leds: 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/leds-is31fl3236.yaml | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Documentation/devicetree/bindings/leds/leds-is31fl3236.yaml b/Documentation/devicetree/bindings/leds/leds-is31fl3236.yaml
index f26340850647d1c642fb345b7cf90764200e13ee..cea93f4d8fe0bcc80d6932be1f346bad321bcd38 100644
--- a/Documentation/devicetree/bindings/leds/leds-is31fl3236.yaml
+++ b/Documentation/devicetree/bindings/leds/leds-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@[1-9][0-9]*$":
     type: object

-- 
2.48.1