*NXP - pca9532 PWM LED Driver
The PCA9532 family is SMBus I/O expander optimized for dimming LEDs.
The PWM support 256 steps.
Required properties:
- compatible:
“nxp,pca9530”
“nxp,pca9531”
“nxp,pca9532”
“nxp,pca9533”
- reg - I2C slave address
Each led is represented as a sub-node of the nxp,pca9530.
Optional sub-node properties:
- label: see Documentation/devicetree/bindings/leds/common.txt
- type: Output configuration, see dt-bindings/leds/leds-pca9532.h (default NONE)
- linux,default-trigger: see Documentation/devicetree/bindings/leds/common.txt
- default-state: see Documentation/devicetree/bindings/leds/common.txt
This property is only valid for sub-nodes of type
Example:
#include <dt-bindings/leds/leds-pca9532.h>
leds: pca9530@60 {
compatible = “nxp,pca9530”;
reg = <0x60>;
red-power {
label = "pca:red:power";
type = <PCA9532_TYPE_LED>;
};
green-power {
label = "pca:green:power";
type = <PCA9532_TYPE_LED>;
};
kernel-booting {
type = <PCA9532_TYPE_LED>;
default-state = "on";
};
sys-stat {
type = <PCA9532_TYPE_LED>;
default-state = "keep"; // don't touch, was set by U-Boot
};
};
For more product information please see the link below:
http://nxp.com/documents/data_sheet/PCA9532.pdf
