39 lines
1.4 KiB
Plaintext
39 lines
1.4 KiB
Plaintext
* Freescale i.MX6UL Touch Controller
|
|
|
|
Required properties:
|
|
- compatible: must be "fsl,imx6ul-tsc".
|
|
- reg: this touch controller address and the ADC2 address.
|
|
- interrupts: the interrupt of this touch controller and ADC2.
|
|
- clocks: the root clock of touch controller and ADC2.
|
|
- clock-names; must be "tsc" and "adc".
|
|
- xnur-gpio: the X- gpio this controller connect to.
|
|
This xnur-gpio returns to low once the finger leave the touch screen (The
|
|
last touch event the touch controller capture).
|
|
|
|
Optional properties:
|
|
- measure-delay-time: the value of measure delay time.
|
|
Before X-axis or Y-axis measurement, the screen need some time before
|
|
even potential distribution ready.
|
|
This value depends on the touch screen.
|
|
- pre-charge-time: the touch screen need some time to precharge.
|
|
This value depends on the touch screen.
|
|
- touchscreen-average-samples: Number of data samples which are averaged for
|
|
each read. Valid values are 1, 4, 8, 16 and 32.
|
|
|
|
Example:
|
|
tsc: tsc@2040000 {
|
|
compatible = "fsl,imx6ul-tsc";
|
|
reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;
|
|
interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
|
|
<GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&clks IMX6UL_CLK_IPG>,
|
|
<&clks IMX6UL_CLK_ADC2>;
|
|
clock-names = "tsc", "adc";
|
|
pinctrl-names = "default";
|
|
pinctrl-0 = <&pinctrl_tsc>;
|
|
xnur-gpio = <&gpio1 3 GPIO_ACTIVE_LOW>;
|
|
measure-delay-time = <0xfff>;
|
|
pre-charge-time = <0xffff>;
|
|
touchscreen-average-samples = <32>;
|
|
};
|