[PATCH v4 3/5] dt-bindings: leds: leds-is31fl32xx: Add powerdown-gpios property
From: Jun Yan <hidden>
Date: 2026-05-05 14:54:16
Also in:
linux-leds, lkml
Subsystem:
led subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Lee Jones, Pavel Machek, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
The IS31FL32XX series features an SDB shutdown pin. Driving it low (active low) places the chip into hardware shutdown mode for power saving, while all register contents are preserved and registers are not reset. Add powerdown-gpios property to describe the GPIO connected to the SDB pin of IS31FL32XX series LED controllers. Signed-off-by: Jun Yan <redacted> --- .../devicetree/bindings/leds/issl,is31fl32xx.yaml | 12 ++++++++++++ 1 file changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml b/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml
index 25ce67940c88..9b129f962d1f 100644
--- a/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml
+++ b/Documentation/devicetree/bindings/leds/issl,is31fl32xx.yaml@@ -45,6 +45,15 @@ properties: When present, the chip's PWM will operate at ~22kHz as opposed to ~3kHz to move the operating frequency out of the audible range. + powerdown-gpios: + maxItems: 1 + description: + GPIO connected to the chip's SDB pin. + Driving this GPIO low places the chip into hardware shutdown mode + for power saving. All register contents are preserved and registers + are not reset during shutdown. The chip exits hardware shutdown mode + when the SDB pin is pulled high. + "#address-cells": const: 1
@@ -158,6 +167,7 @@ additionalProperties: false examples: - | + #include <dt-bindings/gpio/gpio.h> #include <dt-bindings/leds/common.h> i2c {
@@ -170,6 +180,8 @@ examples: #address-cells = <1>; #size-cells = <0>; + powerdown-gpios = <&gpio0 11 GPIO_ACTIVE_LOW>; + led@1 { reg = <1>; color = <LED_COLOR_ID_RED>;
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2.53.0