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-rw-r--r--Documentation/devicetree/bindings/leds/pca963x.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/leds/pca963x.txt b/Documentation/devicetree/bindings/leds/pca963x.txt
index dafbe9931c2b..dfbdb123a9bf 100644
--- a/Documentation/devicetree/bindings/leds/pca963x.txt
+++ b/Documentation/devicetree/bindings/leds/pca963x.txt
@@ -7,6 +7,9 @@ Optional properties:
- nxp,totem-pole : use totem pole (push-pull) instead of open-drain (pca9632 defaults
to open-drain, newer chips to totem pole)
- nxp,hw-blink : use hardware blinking instead of software blinking
+- nxp,period-scale : In some configurations, the chip blinks faster than expected.
+ This parameter provides a scaling ratio (fixed point, decimal divided
+ by 1000) to compensate, e.g. 1300=1.3x and 750=0.75x.
Each led is represented as a sub-node of the nxp,pca963x device.