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