Hi!
> +++ b/Documentation/devicetree/bindings/input/dlg,da7280.txt
> @@ -0,0 +1,101 @@
> +Dialog Semiconductor DA7280 Haptics bindings
> +
> +Required properties:
> +- compatible: Should be "dlg,da7280".
> +- reg: Specifies the I2C slave address.
> +
> +- interrupt-parent : Specifies the phandle of the interrupt controller to
> + which the IRQs from DA7280 are delivered to.
> +
> +- dlg,vib-mode:
> + "LRA-MODE" - Linear Resonance Actuator mode.
> + "ERM-BAR" - Bar type Eccentric Rotating Mass mode.
> + "ERM-COIN" - Coin type Eccentric Rotating Mass mode.
So this is some kind of "vibration motor" on steroids)?
> +- dlg,op-mode: Haptic operation mode.
> + Possible values:
> + 1 - Direct register override mode triggered by i2c(default),
> + 2 - PWM data source mode setting duty to 0 - 0xffff(0% - 100%),
Space after 0xffff?
> + 3 - Register triggered waveform memory mode, the pattern assigned
> + to the PS_SEQ_ID played as much times as PS_SEQ_LOOP,
> + 4 - Edge triggered waveform memory mode, external GPI(N) condtrol
"control"
> + are required to enable/disable and it needs to keep
> + device enabled by sending magnitude (X > 0),
> + the pattern is assigned to the GPI(N)_SEQUENCE_ID below
"below."
> +- dlg,imax-microamp: Actuator max current rating.
> + Valid values: 0 - 252000.
> + Default: 130000.
> +- dlg,impd-micro-ohms: the impedance of the actuator in micro ohm,
"ohms"
> + as read from its datasheet.
"as read" does not sound english.
> +- dlg,mem-array: use in case that memory registers should be updated,
> + Please fill the whole buffers(100 bytes) to avoid any error in driver.
> + For example,
> + dlg,mem-array = <
> + 0x01 0x02 0x03 0x04 0x05 0x06 0x07 0x08 0x09 0x0A
> + ...
> + 0x71 0x72 0x73 0x74 0x75 0x76 0x77 0x78 0x79 0x7A
> + 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
> + 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00 0x00
> + >;
I'd not understand what this is from this description. (And I'd put
example below... in the exampls section).
> +For further information, see device datasheet.
> +
> +======
> +
> +Example:
> +
> + haptics: da7280-haptics@4a {
> + compatible = "dlg,da7280";
> + reg = <0x4a>;
> + interrupt-parent = <&gpio6>;
> + interrupts = <11 IRQ_TYPE_LEVEL_LOW>;
> + dlg,vib-mode = "LRA-MODE";
> + dlg,op-mode = <1>;
> + dlg,nom-microvolt = <2000000>;
> + dlg,abs-max-microvolt = <2000000>;
> + dlg,imax-microamp = <170000>;
> + dlg,resonant-freq-hz = <180>;
> + dlg,impd-micro-ohms = <10500000>;
> + dlg,freq-track-enable;
> + dlg,rapid-stop-enable;
> + };
--
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