| Tom Rini | 6bb92fc | 2024-05-20 09:54:58 -0600 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/input/touchscreen/fsl,imx6ul-tsc.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Freescale i.MX6UL Touch Controller |
| 8 | |
| 9 | maintainers: |
| 10 | - Haibo Chen <haibo.chen@nxp.com> |
| 11 | - Shawn Guo <shawnguo@kernel.org> |
| 12 | - Sascha Hauer <s.hauer@pengutronix.de> |
| 13 | |
| 14 | properties: |
| 15 | compatible: |
| 16 | const: fsl,imx6ul-tsc |
| 17 | |
| 18 | reg: |
| 19 | items: |
| 20 | - description: touch controller address |
| 21 | - description: ADC2 address |
| 22 | |
| 23 | interrupts: |
| 24 | items: |
| 25 | - description: touch controller address |
| 26 | - description: ADC2 address |
| 27 | |
| 28 | clocks: |
| 29 | maxItems: 2 |
| 30 | |
| 31 | clock-names: |
| 32 | items: |
| 33 | - const: tsc |
| 34 | - const: adc |
| 35 | |
| 36 | xnur-gpios: |
| 37 | maxItems: 1 |
| 38 | description: |
| 39 | The X- gpio this controller connect to. This xnur-gpio returns to |
| 40 | low once the finger leave the touch screen (The last touch event |
| 41 | the touch controller capture). |
| 42 | |
| 43 | measure-delay-time: |
| 44 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 45 | 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: 0xffff |
| 49 | minimum: 0 |
| 50 | maximum: 0xffffff |
| 51 | |
| 52 | pre-charge-time: |
| 53 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 54 | description: |
| 55 | The touch screen need some time to precharge. |
| 56 | default: 0xfff |
| 57 | minimum: 0 |
| 58 | maximum: 0xffffffff |
| 59 | |
| 60 | touchscreen-average-samples: |
| 61 | $ref: /schemas/types.yaml#/definitions/uint32 |
| 62 | description: Number of data samples which are averaged for each read. |
| 63 | enum: [ 1, 4, 8, 16, 32 ] |
| 64 | |
| 65 | required: |
| 66 | - compatible |
| 67 | - reg |
| 68 | - interrupts |
| 69 | - clocks |
| 70 | - clock-names |
| 71 | - xnur-gpios |
| 72 | |
| 73 | allOf: |
| 74 | - $ref: touchscreen.yaml# |
| 75 | |
| 76 | additionalProperties: false |
| 77 | |
| 78 | examples: |
| 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 | }; |