98 lines · yaml
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)2%YAML 1.23---4$id: http://devicetree.org/schemas/input/touchscreen/fsl,imx6ul-tsc.yaml#5$schema: http://devicetree.org/meta-schemas/core.yaml#6 7title: Freescale i.MX6UL Touch Controller8 9maintainers:10 - Haibo Chen <haibo.chen@nxp.com>11 - Shawn Guo <shawnguo@kernel.org>12 - Sascha Hauer <s.hauer@pengutronix.de>13 14properties:15 compatible:16 const: fsl,imx6ul-tsc17 18 reg:19 items:20 - description: touch controller address21 - description: ADC2 address22 23 interrupts:24 items:25 - description: touch controller address26 - description: ADC2 address27 28 clocks:29 maxItems: 230 31 clock-names:32 items:33 - const: tsc34 - const: adc35 36 xnur-gpios:37 maxItems: 138 description:39 The X- gpio this controller connect to. This xnur-gpio returns to40 low once the finger leave the touch screen (The last touch event41 the touch controller capture).42 43 measure-delay-time:44 $ref: /schemas/types.yaml#/definitions/uint3245 description:46 The value of measure delay time. Before X-axis or Y-axis measurement,47 the screen need some time before even potential distribution ready.48 default: 0xffff49 minimum: 050 maximum: 0xffffff51 52 pre-charge-time:53 $ref: /schemas/types.yaml#/definitions/uint3254 description:55 The touch screen need some time to precharge.56 default: 0xfff57 minimum: 058 maximum: 0xffffffff59 60 touchscreen-average-samples:61 $ref: /schemas/types.yaml#/definitions/uint3262 description: Number of data samples which are averaged for each read.63 enum: [ 1, 4, 8, 16, 32 ]64 65required:66 - compatible67 - reg68 - interrupts69 - clocks70 - clock-names71 - xnur-gpios72 73allOf:74 - $ref: touchscreen.yaml#75 76additionalProperties: false77 78examples:79 - |80 #include <dt-bindings/interrupt-controller/arm-gic.h>81 #include <dt-bindings/clock/imx6ul-clock.h>82 #include <dt-bindings/gpio/gpio.h>83 touchscreen@2040000 {84 compatible = "fsl,imx6ul-tsc";85 reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;86 interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,87 <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;88 clocks = <&clks IMX6UL_CLK_IPG>,89 <&clks IMX6UL_CLK_ADC2>;90 clock-names = "tsc", "adc";91 pinctrl-names = "default";92 pinctrl-0 = <&pinctrl_tsc>;93 xnur-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;94 measure-delay-time = <0xfff>;95 pre-charge-time = <0xffff>;96 touchscreen-average-samples = <32>;97 };98