linux-kernel - [PATCH v4 2/3] dt-bindings: leds: issi,is31fl3236: add issi,22kHz-pwm property

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Message-Id: <20250717-leds-is31fl3236a-v4-2-72ef946bfbc8@thegoodpenguin.co.uk>
Date: Thu, 17 Jul 2025 16:02:08 +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 v4 2/3] 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 abcd4c448e94db1d1e339f7ee165c3e04a1d354d..e75809e343b110eed0fd5f87065d8e94a97835fa 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][0-9a-f]$":
     type: object

-- 
2.48.1