0001 *NXP - pca9532 PWM LED Driver
0002
0003 The PCA9532 family is SMBus I/O expander optimized for dimming LEDs.
0004 The PWM support 256 steps.
0005
0006 Required properties:
0007 - compatible:
0008 "nxp,pca9530"
0009 "nxp,pca9531"
0010 "nxp,pca9532"
0011 "nxp,pca9533"
0012 - reg - I2C slave address
0013
0014 Each led is represented as a sub-node of the nxp,pca9530.
0015
0016 Optional sub-node properties:
0017 - label: see Documentation/devicetree/bindings/leds/common.txt
0018 - type: Output configuration, see dt-bindings/leds/leds-pca9532.h (default NONE)
0019 - linux,default-trigger: see Documentation/devicetree/bindings/leds/common.txt
0020 - default-state: see Documentation/devicetree/bindings/leds/common.txt
0021 This property is only valid for sub-nodes of type <PCA9532_TYPE_LED>.
0022
0023 Example:
0024 #include <dt-bindings/leds/leds-pca9532.h>
0025
0026 leds: pca9530@60 {
0027 compatible = "nxp,pca9530";
0028 reg = <0x60>;
0029
0030 red-power {
0031 label = "pca:red:power";
0032 type = <PCA9532_TYPE_LED>;
0033 };
0034 green-power {
0035 label = "pca:green:power";
0036 type = <PCA9532_TYPE_LED>;
0037 };
0038 kernel-booting {
0039 type = <PCA9532_TYPE_LED>;
0040 default-state = "on";
0041 };
0042 sys-stat {
0043 type = <PCA9532_TYPE_LED>;
0044 default-state = "keep"; // don't touch, was set by U-Boot
0045 };
0046 };
0047
0048 For more product information please see the link below:
0049 http://nxp.com/documents/data_sheet/PCA9532.pdf
