projects / deliverable / linux.git / blame
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|---|---|---|
| d8a8b3ed AD |
1 | Synaptics RMI4 I2C Device Binding |
| 2 | ||
| 3 | The Synaptics RMI4 core is able to support RMI4 devices using different | |
| 4 | transports and different functions. This file describes the device tree | |
| 5 | bindings for devices using the I2C transport driver. Complete documentation | |
| 6 | for other transports and functions can be found in | |
| 7 | Documentation/devicetree/bindings/input/rmi4. | |
| 8 | ||
| 9 | Required Properties: | |
| 10 | - compatible: syna,rmi4-i2c | |
| 11 | - reg: I2C address | |
| 12 | - #address-cells: Set to 1 to indicate that the function child nodes | |
| 13 | consist of only on uint32 value. | |
| 14 | - #size-cells: Set to 0 to indicate that the function child nodes do not | |
| 15 | have a size property. | |
| 16 | ||
| 17 | Optional Properties: | |
| 18 | - interrupts: interrupt which the rmi device is connected to. | |
| 19 | - interrupt-parent: The interrupt controller. | |
| 20 | See Documentation/devicetree/bindings/interrupt-controller/interrupts.txt | |
| 21 | ||
| 22 | - syna,reset-delay-ms: The number of milliseconds to wait after resetting the | |
| 23 | device. | |
| 24 | ||
| 946c8432 BA |
25 | - syna,startup-delay-ms: The number of milliseconds to wait after powering on |
| 26 | the device. | |
| 27 | ||
| 28 | - vdd-supply: VDD power supply. | |
| 29 | See ../regulator/regulator.txt | |
| 30 | ||
| 31 | - vio-supply: VIO power supply | |
| 32 | See ../regulator/regulator.txt | |
| 33 | ||
| d8a8b3ed AD |
34 | Function Parameters: |
| 35 | Parameters specific to RMI functions are contained in child nodes of the rmi device | |
| 36 | node. Documentation for the parameters of each function can be found in: | |
| 37 | Documentation/devicetree/bindings/input/rmi4/rmi_f*.txt. | |
| 38 | ||
| 39 | ||
| 40 | ||
| 41 | Example: | |
| 42 | &i2c1 { | |
| 43 | rmi4-i2c-dev@2c { | |
| 44 | compatible = "syna,rmi4-i2c"; | |
| 45 | reg = <0x2c>; | |
| 46 | #address-cells = <1>; | |
| 47 | #size-cells = <0>; | |
| 48 | interrupt-parent = <&gpio>; | |
| 49 | interrupts = <4 2>; | |
| 50 | ||
| 51 | rmi4-f01@1 { | |
| 52 | reg = <0x1>; | |
| 53 | syna,nosleep-mode = <1>; | |
| 54 | }; | |
| 55 | ||
| 56 | rmi4-f11@11 { | |
| 57 | reg = <0x11>; | |
| 58 | touchscreen-inverted-y; | |
| 59 | syna,sensor-type = <2>; | |
| 60 | }; | |
| 61 | }; | |
| 62 | }; |