84 lines
3.2 KiB
Plaintext
84 lines
3.2 KiB
Plaintext
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ST LIS3DH 3-axis accelerometer sensor driver
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Required properties:
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- compatible : Should be "st,lis3dh".
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- reg : i2c slave address of the device.
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- pinctrl-names : The pinctrl configration names of this sensor driver. Should be
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"lis3dh_default" and "lis3dh_sleep".
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- pinctrl-0 : Should specify pin control groups used for this controller.
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- pinctrl-1 : Should specify pin control groups used for this controller.
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- interrupt-parent : Parent of interrupt.
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- interrupts : Accelerometer sample interrupt to indicate new data ready.
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- vdd-supply : Analog power supply needed to power device.
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- vddio-supply : Digital IO power supply needed for IO and I2C.
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- st,min-interval : Minimal data polling interval in millisecond.
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- st,init-interval : Initial data polling interval in millisecond.
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- st,axis-map-x : Select which data will be X-axis of reading.
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The sensor measures and reports three axis of
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data, this property select which data will be
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interpretd as X-axis gravity data of phone.
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e.g. Give "0" to this property means the first
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measurement data will be used as X-axis data.
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- st,axis-map-y : Select which data will be Y-axis of reading.
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Similar to property above, this property selet
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Y-axis data.
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- st,axis-map-z : Select which data will be Z-axis of reading.
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Similar to property above, this property selet
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Z-axis data.
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- st,g-range : Select initial range of measurement. This define
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the initial configuration of maxinum
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measurement range of the sensor.Where 2 is 2G,
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4 is 4G, 8 is 8G and 16 is 16G, 2G will be used for any
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other values.
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Optional properties:
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- pinctrl-names: The names of the pinctrl states that used by the
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driver to configure the TLMM pins, it should contain
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only one value - "default".
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- pinctrl-<n> : Pinctrl states as described in
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bindings/pinctrl/pinctrl-bindings.txt.
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- st,negate-x : Boolean to select negate of X-axis data is
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required, if this property is defined, X-axis
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data will be negated.
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- st,negate-y : Boolean to select negate of Y-axis data is
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required, if this property is defined, Y-axis
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data will be negated.
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- st,negate-z : Boolean to select negate of Z-axis data is
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required, if this property is defined, Z-axis
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data will be negated.
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- st,enable-int: Boolean to select interrupt mode,if this property is defined
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interrupt mode will be selected.
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- st,gpio-int1 : 1st irq gpio which is to provide interrupts
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to host, interrupt events can be route to any of
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these two irq pins according device configuration.
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- st,gpio-int2 : 2nd irq gpio which is to provide interrupts
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to host.
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Example:
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i2c@f9925000 { /* BLSP-1 QUP-3 */
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st@18 {
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compatible = "st,lis3dh";
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reg = <0x18>;
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pinctrl-names = "lis3dh_default","lis3dh_sleep";
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pinctrl-0 = <&lis3dh_int1_default>;
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pinctrl-1 = <&lis3dh_int1_sleep>;
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interrupt-parent = <&msm_gpio>;
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interrupts = <115 0x2002>;
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vdd-supply = <&pm8916_l17>;
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vddio-supply = <&pm8916_l6>;
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st,min-interval = <5>;
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st,init-interval = <200>;
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st,axis-map-x = <1>;
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st,axis-map-y = <0>;
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st,axis-map-z = <2>;
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st,g-range = <2>;
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st,gpio-int1 = <&msm_gpio 115 0x2002>;
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st,negate-x;
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st,negate-y;
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st,negate-z;
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st,enable-int;
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};
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};
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