zephyr,dali-pwm

Overview

Name:

zephyr,dali-pwm

Vendor:

Zephyr Project

Used in:

List of boards using this compatible

Driver:

drivers/dali/dali_pwm.c

Description

PWM based DALI interface

Properties

Node specific propertiesDeprecated node specific propertiesBase properties

Properties not inherited from the base binding file.

Name	Type	Details
pwms	phandle-array	The PWM unit will control the transmission of DALI frames. Recommended clock rate is 1 MHz. The minimum clock rate is 200 kHz to meet the requirements set by the DALI standard. This property is required.
counter	phandle	This counter controls all the time critical actions for DALI transmitting and receiving. The minimum clock rate is 1 MHz to meet the requirements set by the DALI standard. This property is required.
chan-id-rx	int	Counter channel for Rx-stopbit and collision timeout. This property is required.
chan-id-tx	int	Counter channel for Tx re-programming. This property is required.
tx-prog-delay-us	int	Re-programming the PWM unit needs to be handled differently for different controllers. The re-programming is synchronized by the rx-edge-event. The PWM unit is programmed at the end of the PWM-period plus the tx-prog-delay-us value. It can be negative. Default value: 0
rx-gpios	phandle-array	GPIO pin that connects to the DALI Rx pin. This property is required.
tx-flank-shift-us	int	Difference in propagation delay in us between the falling and rising edge when transmitting. If for example the high to low delay is 8 us and low to high is 22 us, then enter (-14) here. Keep in low us range. The value depends on the controller and the hardware implementation of the DALI physical interface. This property is required.
rx-flank-shift-us	int	Difference in propagation delay in us between the falling and rising edge when receiving. If for example the high to low delay is 47 us and low to high is 15 us, then enter (32) here. Keep in low us range. The value depends on the controller and the hardware implementation of the DALI physical interface. This property is required.
tx-rx-propagation-max-us	int	The maximal time from a transmitted change to read observation. This value needs to be set for proper collision detection. The delay is measured in us. The value depends on the controller and the hardware implementation of the DALI physical interface. This property is required.
rx-max-latency-us	int	The maximal time from the change of a gpio pin state until the irq handler routine is entered. This value needs to be adjusted to ensure standard conforming reading of bit timings. The value depends on the controller and the hardware implementation of the DALI physical interface. This property is required.
rx-grey-area-us	int	This value adds extra margin to inter-frame timings to add extra tolerances, required to pass test procedures. This property is required.