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39 lines
1.3 KiB
39 lines
1.3 KiB
* Texas Instruments tsc2007 touchscreen controller |
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Required properties: |
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- compatible: must be "ti,tsc2007". |
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- reg: I2C address of the chip. |
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- ti,x-plate-ohms: X-plate resistance in ohms. |
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Optional properties: |
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- gpios: the interrupt gpio the chip is connected to (trough the penirq pin). |
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The penirq pin goes to low when the panel is touched. |
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(see GPIO binding[1] for more details). |
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- interrupts: (gpio) interrupt to which the chip is connected |
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(see interrupt binding[0]). |
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- ti,max-rt: maximum pressure. |
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- ti,fuzzx: specifies the absolute input fuzz x value. |
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If set, it will permit noise in the data up to +- the value given to the fuzz |
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parameter, that is used to filter noise from the event stream. |
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- ti,fuzzy: specifies the absolute input fuzz y value. |
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- ti,fuzzz: specifies the absolute input fuzz z value. |
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- ti,poll-period: how much time to wait (in milliseconds) before reading again the |
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values from the tsc2007. |
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[0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt |
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[1]: Documentation/devicetree/bindings/gpio/gpio.txt |
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Example: |
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&i2c1 { |
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/* ... */ |
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tsc2007@49 { |
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compatible = "ti,tsc2007"; |
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reg = <0x49>; |
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interrupt-parent = <&gpio4>; |
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interrupts = <0x0 0x8>; |
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gpios = <&gpio4 0 0>; |
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ti,x-plate-ohms = <180>; |
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}; |
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/* ... */ |
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};
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