xref: /freebsd/sys/contrib/device-tree/Bindings/pwm/nxp,pca9685-pwm.txt (revision a4e5e0106ac7145f56eb39a691e302cabb4635be)
1NXP PCA9685 16-channel 12-bit PWM LED controller
2================================================
3
4Required properties:
5  - compatible: "nxp,pca9685-pwm"
6  - #pwm-cells: Should be 2. See pwm.yaml in this directory for a description of
7    the cells format.
8    The index 16 is the ALLCALL channel, that sets all PWM channels at the same
9    time.
10
11Optional properties:
12  - invert (bool): boolean to enable inverted logic
13  - open-drain (bool): boolean to configure outputs with open-drain structure;
14		       if omitted use totem-pole structure
15
16Example:
17
18For LEDs that are directly connected to the PCA, the following setting is
19applicable:
20
21pca: pca@41 {
22	compatible = "nxp,pca9685-pwm";
23	#pwm-cells = <2>;
24	reg = <0x41>;
25	invert;
26	open-drain;
27};
28