63 lines
2.4 KiB
Plaintext
63 lines
2.4 KiB
Plaintext
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* STM AIS328DQ Accelerometer sensor
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This driver uses the NVidia Sensor (NVS) framework.
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See the nvs.txt documentation for NVS DT capabilities.
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The nvs_ais328dq.c sensor drivers supports the STM device.
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Required properties:
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- compatible: Device or generic name.
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Supported device names:
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- stm,ais328dq
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Note: If the part is known and is populated, then it can be specified:
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Example: compatible = "stm,ais328dq";
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When specifying a device this way, the driver will assume this specific
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device is populated during system boot and will not verify its
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existence. If the device is not found, the driver will unload itself.
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This requires regulators to be setup correctly for the probe function.
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- reg: i2c address of the device. It should be 0x18.
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- interrupt-parent: GPIO number
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- interrupts: GPIO macro
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Optional properties:
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- status: set to "ok" or "okay" for normal operation. Set to anything else
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to unload the driver without ever communicating with the device.
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Note: The "anything else" above is typically "disabled".
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Since the driver will unload without communicating with the device, the
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device will be left in its POR state.
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- accelerometer_disable: Setting this property to <1> will disable the
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accelerometer.
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- vdd-supply: regulator supply for the chip
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- vlogic-supply: regulator supply for the chip
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Note: These are required if the driver is to control the regulators.
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- accelerometer_matrix: Orientation matrix for this device.
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- accelerometer_delay_us_min: Change the max supported sampling rate.
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- accelerometer_delay_us_max: Change the min supported sampling rate.
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- stm_odr_override: Override the HW odr setting. This property is defined as
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a list of tuples of the following form:
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stm_odr_override = <
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20000 22222 0x20
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10000 11111 0x28
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2500 2778 0x30
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>;
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where each tuple is described as follows:
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< Current_ODR override_ODR override_hw_ODR >
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Current_ODR will be replaced by the override_ODR in the
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stm_odr_tbl in the driver. The hw value will be replaced
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by the override_hw_ODR.
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Example:
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ais328dq@18 {
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compatible = "stm,ais328dq";
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reg = <0x18>;
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interrupt-parent = <&gpio>;
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interrupts = <TEGRA_GPIO(X, 2) 0x01>;
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accelerometer_matrix = [00 ff 00 ff 00 00 00 00 ff];
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accelerometer_delay_us_min = <2500>;
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stm_odr_override = <
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20000 22222 0x20
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10000 11111 0x28
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2500 2778 0x30
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>;
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};
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