| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | * Texas Instruments tsc2007 touchscreen controller |
| 2 | |
| 3 | Required properties: |
| 4 | - compatible: must be "ti,tsc2007". |
| 5 | - reg: I2C address of the chip. |
| 6 | - ti,x-plate-ohms: X-plate resistance in ohms. |
| 7 | |
| 8 | Optional properties: |
| 9 | - gpios: the interrupt gpio the chip is connected to (through the penirq pin). |
| 10 | The penirq pin goes to low when the panel is touched. |
| 11 | (see GPIO binding[1] for more details). |
| 12 | - interrupts: (gpio) interrupt to which the chip is connected |
| 13 | (see interrupt binding[0]). |
| 14 | - ti,max-rt: maximum pressure. |
| 15 | - ti,fuzzx: specifies the absolute input fuzz x value. |
| 16 | If set, it will permit noise in the data up to +- the value given to the fuzz |
| 17 | parameter, that is used to filter noise from the event stream. |
| 18 | - ti,fuzzy: specifies the absolute input fuzz y value. |
| 19 | - ti,fuzzz: specifies the absolute input fuzz z value. |
| 20 | - ti,poll-period: how much time to wait (in milliseconds) before reading again the |
| 21 | values from the tsc2007. |
| 22 | |
| 23 | [0]: Documentation/devicetree/bindings/interrupt-controller/interrupts.txt |
| 24 | [1]: Documentation/devicetree/bindings/gpio/gpio.txt |
| 25 | |
| 26 | Example: |
| 27 | &i2c1 { |
| 28 | /* ... */ |
| 29 | tsc2007@49 { |
| 30 | compatible = "ti,tsc2007"; |
| 31 | reg = <0x49>; |
| 32 | interrupt-parent = <&gpio4>; |
| 33 | interrupts = <0x0 0x8>; |
| 34 | gpios = <&gpio4 0 0>; |
| 35 | ti,x-plate-ohms = <180>; |
| 36 | }; |
| 37 | |
| 38 | /* ... */ |
| 39 | }; |