Messages in this thread Patch in this message | | | From | Karol Wrona <> | Subject | [PATCH v3 2/5] iio: sensorhub: Add sensorhub bindings | Date | Fri, 05 Dec 2014 20:54:47 +0100 |
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Add sensorhub bindings for sensorhub on Galaxy Gear 2.
Change-Id: I4ee25aef33c21a4662de230841de9a8684f2c26b Signed-off-by: Karol Wrona <k.wrona@samsung.com> Acked-by: Kyungmin Park <kyungmin.park@samsung.com> --- .../devicetree/bindings/iio/sensorhub.txt | 46 ++++++++++++++++++++ 1 file changed, 46 insertions(+) create mode 100644 Documentation/devicetree/bindings/iio/sensorhub.txt
diff --git a/Documentation/devicetree/bindings/iio/sensorhub.txt b/Documentation/devicetree/bindings/iio/sensorhub.txt new file mode 100644 index 0000000..2aca0c3 --- /dev/null +++ b/Documentation/devicetree/bindings/iio/sensorhub.txt @@ -0,0 +1,46 @@ +Samsung Sensorhub driver + +Sensorhub is a MCU which manages several sensors and also plays the role +of a virtual sensor device. + +Required properties: +- compatible: "samsung,sensorhub-rinato" or "samsung,sensorhub-thermostat" +- spi-max-frequency: max SPI clock frequency +- interrupt-parent: interrupt parent +- interrupts: communication interrupt +- ap-mcu-gpio: [out] ap to sensorhub line - used during communication +- mcu-ap-gpio: [in] sensorhub to ap - used during communication +- mcu-reset: [out] sensorhub reset + +Optional properties: +- sensor's nodes: + compatible = "samsung,mpu6500-accel" + compatible = "samsung,mpu6500-gyro" + compatible = "samsung,adpd142" + +Sensor compatibles are used to match proper sensor driver to real sensor on +the board. The firmware does not give such information, so it helps to specify +some sensors properties. Sensors have "samsung" prefixes because frequently +they will not have much in common with sensors used without sensorhub because +it can do some data processing. + +Example: + + shub_spi: shub { + compatible = "samsung,sensorhub-rinato"; + spi-max-frequency = <5000000>; + interrupt-parent = <&gpx0>; + interrupts = <2 0>; + ap-mcu-gpio = <&gpx0 0 0>; + mcu-ap-gpio = <&gpx0 4 0>; + mcu-reset = <&gpx0 5 0>; + sensor@0 { + compatible = "samsung,mpu6500-accel"; + }; + sensor@1 { + compatible = "samsung,mpu6500-gyro"; + }; + sensor@2 { + compatible = "samsung,adpd142"; + }; + }; -- 1.7.9.5
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