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- TI DRV2667 is a haptic controller chip. It can drive piezo haptics
- and can operate in two modes - analog and digital.
- Required properties:
- -compatible : should be "ti,drv2667".
- -reg : i2c address to be used.
- -vdd-supply : regulator to power the chip.
- -vdd-i2c-supply : regulator to power i2c bus.
- Optional properties:
- -ti,label : Name to be registered with timedoutput class.
- -ti,mode : Mode to be supported, 0 to 3 - FIFO, RAM, WAVE and ANALOG.
- -ti,wav-seq : Wave Sequence composed of 11 bytes - wave form id,
- Header size, start upper byte, start lower byte,
- stop upper byte, stop lower byte, repeat count,
- amplitude, frequency, duration and envelope
- -ti,gain : Gain to be programmed for the chip.
- -ti,idle-timeout-ms : Idle timeout in ms to be programmed for the chip to go into
- low power mode after finishing its operation.
- -ti,max-runtime-ms : Maximum time in ms for which chip can drive haptics.
- Example:
- i2c@f9967000 {
- ti-drv2667@59 {
- compatible = "ti,drv2667";
- reg = <0x59>;
- vdd-supply = <&drv2667_vreg>;
- vdd-i2c-supply = <&pm8941_s3>;
- ti,label = "vibrator";
- ti,gain = <3>;
- ti,idle-timeout-ms = <20>;
- ti,max-runtime-ms = <15000>;
- ti,mode = <2>;
- ti,wav-seq = [
- /* wave form id */
- 01
- /* header size, start and stop bytes */
- 05 80 06 00 09
- /* repeat, amp, freq, duration, envelope */
- 01 ff 19 02 00];
- };
- };
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