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