1 # SPDX-License-Identifier: (GPL-2.0-only OR BS 1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/input/touch 4 $id: http://devicetree.org/schemas/input/touchscreen/fsl,imx6ul-tsc.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Freescale i.MX6UL Touch Controller 7 title: Freescale i.MX6UL Touch Controller
8 8
9 maintainers: 9 maintainers:
10 - Haibo Chen <haibo.chen@nxp.com> 10 - Haibo Chen <haibo.chen@nxp.com>
11 - Shawn Guo <shawnguo@kernel.org> 11 - Shawn Guo <shawnguo@kernel.org>
12 - Sascha Hauer <s.hauer@pengutronix.de> 12 - Sascha Hauer <s.hauer@pengutronix.de>
13 13
14 properties: 14 properties:
15 compatible: 15 compatible:
16 const: fsl,imx6ul-tsc 16 const: fsl,imx6ul-tsc
17 17
18 reg: 18 reg:
19 items: 19 items:
20 - description: touch controller address 20 - description: touch controller address
21 - description: ADC2 address 21 - description: ADC2 address
22 22
23 interrupts: 23 interrupts:
24 items: 24 items:
25 - description: touch controller address 25 - description: touch controller address
26 - description: ADC2 address 26 - description: ADC2 address
27 27
28 clocks: 28 clocks:
29 maxItems: 2 29 maxItems: 2
30 30
31 clock-names: 31 clock-names:
32 items: 32 items:
33 - const: tsc 33 - const: tsc
34 - const: adc 34 - const: adc
35 35
36 xnur-gpios: 36 xnur-gpios:
37 maxItems: 1 37 maxItems: 1
38 description: 38 description:
39 The X- gpio this controller connect to. 39 The X- gpio this controller connect to. This xnur-gpio returns to
40 low once the finger leave the touch scre 40 low once the finger leave the touch screen (The last touch event
41 the touch controller capture). 41 the touch controller capture).
42 42
43 measure-delay-time: 43 measure-delay-time:
44 $ref: /schemas/types.yaml#/definitions/uin 44 $ref: /schemas/types.yaml#/definitions/uint32
45 description: 45 description:
46 The value of measure delay time. Before 46 The value of measure delay time. Before X-axis or Y-axis measurement,
47 the screen need some time before even po 47 the screen need some time before even potential distribution ready.
48 default: 0xffff 48 default: 0xffff
49 minimum: 0 49 minimum: 0
50 maximum: 0xffffff 50 maximum: 0xffffff
51 51
52 pre-charge-time: 52 pre-charge-time:
53 $ref: /schemas/types.yaml#/definitions/uin 53 $ref: /schemas/types.yaml#/definitions/uint32
54 description: 54 description:
55 The touch screen need some time to prech 55 The touch screen need some time to precharge.
56 default: 0xfff 56 default: 0xfff
57 minimum: 0 57 minimum: 0
58 maximum: 0xffffffff 58 maximum: 0xffffffff
59 59
60 touchscreen-average-samples: 60 touchscreen-average-samples:
61 $ref: /schemas/types.yaml#/definitions/uin 61 $ref: /schemas/types.yaml#/definitions/uint32
62 description: Number of data samples which 62 description: Number of data samples which are averaged for each read.
63 enum: [ 1, 4, 8, 16, 32 ] 63 enum: [ 1, 4, 8, 16, 32 ]
64 64
65 required: 65 required:
66 - compatible 66 - compatible
67 - reg 67 - reg
68 - interrupts 68 - interrupts
69 - clocks 69 - clocks
70 - clock-names 70 - clock-names
71 - xnur-gpios 71 - xnur-gpios
72 72
73 allOf: 73 allOf:
74 - $ref: touchscreen.yaml# 74 - $ref: touchscreen.yaml#
75 75
76 additionalProperties: false 76 additionalProperties: false
77 77
78 examples: 78 examples:
79 - | 79 - |
80 #include <dt-bindings/interrupt-controller 80 #include <dt-bindings/interrupt-controller/arm-gic.h>
81 #include <dt-bindings/clock/imx6ul-clock.h 81 #include <dt-bindings/clock/imx6ul-clock.h>
82 #include <dt-bindings/gpio/gpio.h> 82 #include <dt-bindings/gpio/gpio.h>
83 touchscreen@2040000 { 83 touchscreen@2040000 {
84 compatible = "fsl,imx6ul-tsc"; 84 compatible = "fsl,imx6ul-tsc";
85 reg = <0x02040000 0x4000>, <0x0219c000 85 reg = <0x02040000 0x4000>, <0x0219c000 0x4000>;
86 interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL 86 interrupts = <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
87 <GIC_SPI 101 IRQ_TYPE_LEV 87 <GIC_SPI 101 IRQ_TYPE_LEVEL_HIGH>;
88 clocks = <&clks IMX6UL_CLK_IPG>, 88 clocks = <&clks IMX6UL_CLK_IPG>,
89 <&clks IMX6UL_CLK_ADC2>; 89 <&clks IMX6UL_CLK_ADC2>;
90 clock-names = "tsc", "adc"; 90 clock-names = "tsc", "adc";
91 pinctrl-names = "default"; 91 pinctrl-names = "default";
92 pinctrl-0 = <&pinctrl_tsc>; 92 pinctrl-0 = <&pinctrl_tsc>;
93 xnur-gpios = <&gpio1 3 GPIO_ACTIVE_LOW 93 xnur-gpios = <&gpio1 3 GPIO_ACTIVE_LOW>;
94 measure-delay-time = <0xfff>; 94 measure-delay-time = <0xfff>;
95 pre-charge-time = <0xffff>; 95 pre-charge-time = <0xffff>;
96 touchscreen-average-samples = <32>; 96 touchscreen-average-samples = <32>;
97 }; 97 };
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