From: Jun Yan <jerrysteve1101@gmail.com>
To: linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
linux-leds@vger.kernel.org
Cc: lee@kernel.org, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, luccafachinetti@gmail.com,
pzalewski@thegoodpenguin.co.uk, daniel@zonque.org,
Jun Yan <jerrysteve1101@gmail.com>
Subject: [PATCH v2 2/5] dt-bindings: leds: leds-is31fl32xx: add support for is31fl3236a
Date: Tue, 28 Apr 2026 10:33:58 +0800 [thread overview]
Message-ID: <20260428023401.330308-3-jerrysteve1101@gmail.com> (raw)
In-Reply-To: <20260428023401.330308-1-jerrysteve1101@gmail.com>
Add an additional and optional control property for setting
the output PWM frequency to 22kHz that exists on is31fl3236a.
The default is 3kHz and this option puts the operational frequency
outside of the audible range.
Co-developed-by: Pawel Zalewski <pzalewski@thegoodpenguin.co.uk>
Signed-off-by: Pawel Zalewski <pzalewski@thegoodpenguin.co.uk>
Signed-off-by: Jun Yan <jerrysteve1101@gmail.com>
---
.../bindings/leds/issl,is31fl32xx.yaml | 25 +++++++++++++++++++
1 file changed, 25 insertions(+)
diff --git a/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml b/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml
index cb4741dee12e..25ce67940c88 100644
--- a/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml
+++ b/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml
@@ -21,6 +21,7 @@ description: |
https://www.lumissil.com/assets/pdf/core/IS31FL3218_DS.pdf
https://www.lumissil.com/assets/pdf/core/IS31FL3235_DS.pdf
https://www.lumissil.com/assets/pdf/core/IS31FL3236_DS.pdf
+ https://www.lumissil.com/assets/pdf/core/IS31FL3236A_DS.pdf
https://www.lumissil.com/assets/pdf/core/IS31FL3293_DS.pdf
properties:
@@ -30,6 +31,7 @@ properties:
- issi,is31fl3218
- issi,is31fl3235
- issi,is31fl3236
+ - issi,is31fl3236a
- issi,is31fl3293
- si-en,sn3216
- si-en,sn3218
@@ -37,6 +39,12 @@ properties:
reg:
maxItems: 1
+ 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.
+
"#address-cells":
const: 1
@@ -60,6 +68,22 @@ patternProperties:
- reg
allOf:
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - issi,is31fl3216
+ - issi,is31fl3218
+ - issi,is31fl3235
+ - issi,is31fl3236
+ - issi,is31fl3293
+ - si-en,sn3216
+ - si-en,sn3218
+ then:
+ properties:
+ issi,22khz-pwm: false
+
- if:
properties:
compatible:
@@ -116,6 +140,7 @@ allOf:
contains:
enum:
- issi,is31fl3236
+ - issi,is31fl3236a
then:
patternProperties:
"^led@([1-9])+$":
--
2.53.0
next prev parent reply other threads:[~2026-04-28 2:34 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-04-28 2:33 [PATCH v2 0/5] leds: Add shutdown gpio for is31fl32xx Jun Yan
2026-04-28 2:33 ` [PATCH v2 1/5] dt-bindings: leds: is31fl32xx: convert the binding to yaml Jun Yan
2026-04-28 2:33 ` Jun Yan [this message]
2026-04-28 2:33 ` [PATCH v2 3/5] dt-bindings: leds: leds-is31fl32xx: Add shutdown-gpios property Jun Yan
2026-04-29 7:27 ` Krzysztof Kozlowski
2026-04-28 2:34 ` [PATCH v2 4/5] leds: is31fl32xx: Add shutdown pin to exit hardware shutdown mode Jun Yan
2026-04-28 2:34 ` [PATCH v2 5/5] leds: is31f132xx: Fix missing brightness_steps for is31f13236 Jun Yan
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