1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-C 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/iio/adc/fsl 4 $id: http://devicetree.org/schemas/iio/adc/fsl,imx25-gcq.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: Freescale ADC GCQ device 7 title: Freescale ADC GCQ device
8 8
9 description: 9 description:
10 This is a generic conversion queue device th 10 This is a generic conversion queue device that can convert any of the
11 analog inputs using the ADC unit of the i.MX 11 analog inputs using the ADC unit of the i.MX25.
12 12
13 maintainers: 13 maintainers:
14 - Jonathan Cameron <jic23@kernel.org> 14 - Jonathan Cameron <jic23@kernel.org>
15 15
16 properties: 16 properties:
17 compatible: 17 compatible:
18 const: fsl,imx25-gcq 18 const: fsl,imx25-gcq
19 19
20 reg: 20 reg:
21 maxItems: 1 21 maxItems: 1
22 22
23 interrupts: 23 interrupts:
24 maxItems: 1 24 maxItems: 1
25 25
26 vref-ext-supply: 26 vref-ext-supply:
27 description: 27 description:
28 The regulator supplying the ADC referenc 28 The regulator supplying the ADC reference voltage.
29 Required when at least one subnode uses 29 Required when at least one subnode uses the this reference.
30 30
31 vref-xp-supply: 31 vref-xp-supply:
32 description: 32 description:
33 The regulator supplying the ADC referenc 33 The regulator supplying the ADC reference voltage on pin XP.
34 Required when at least one subnode uses 34 Required when at least one subnode uses this reference.
35 35
36 vref-yp-supply: 36 vref-yp-supply:
37 description: 37 description:
38 The regulator supplying the ADC referenc 38 The regulator supplying the ADC reference voltage on pin YP.
39 Required when at least one subnode uses 39 Required when at least one subnode uses this reference.
40 40
41 "#io-channel-cells": 41 "#io-channel-cells":
42 const: 1 42 const: 1
43 43
44 "#address-cells": 44 "#address-cells":
45 const: 1 45 const: 1
46 46
47 "#size-cells": 47 "#size-cells":
48 const: 0 48 const: 0
49 49
50 required: 50 required:
51 - compatible 51 - compatible
52 - reg 52 - reg
53 - interrupts 53 - interrupts
54 - "#address-cells" 54 - "#address-cells"
55 - "#size-cells" 55 - "#size-cells"
56 56
57 patternProperties: 57 patternProperties:
58 "[a-z][a-z0-9]+@[0-9a-f]+$": 58 "[a-z][a-z0-9]+@[0-9a-f]+$":
59 type: object 59 type: object
60 description: 60 description:
61 Child nodes used to define the reference 61 Child nodes used to define the reference voltages used for each channel
62 62
63 properties: 63 properties:
64 reg: 64 reg:
65 description: | 65 description: |
66 Number of the analog input. 66 Number of the analog input.
67 0: xp 67 0: xp
68 1: yp 68 1: yp
69 2: xn 69 2: xn
70 3: yn 70 3: yn
71 4: wiper 71 4: wiper
72 5: inaux0 72 5: inaux0
73 6: inaux1 73 6: inaux1
74 7: inaux2 74 7: inaux2
75 items: 75 items:
76 - minimum: 0 76 - minimum: 0
77 maximum: 7 77 maximum: 7
78 78
79 fsl,adc-refp: 79 fsl,adc-refp:
80 $ref: /schemas/types.yaml#/definitions 80 $ref: /schemas/types.yaml#/definitions/uint32
81 description: | 81 description: |
82 Specifies the positive reference inp 82 Specifies the positive reference input as defined in
83 <dt-bindings/iio/adc/fsl-imx25-gcq.h 83 <dt-bindings/iio/adc/fsl-imx25-gcq.h>
84 0: YP voltage reference 84 0: YP voltage reference
85 1: XP voltage reference 85 1: XP voltage reference
86 2: External voltage reference 86 2: External voltage reference
87 3: Internal voltage reference (defau 87 3: Internal voltage reference (default)
88 minimum: 0 88 minimum: 0
89 maximum: 3 89 maximum: 3
90 90
91 fsl,adc-refn: 91 fsl,adc-refn:
92 $ref: /schemas/types.yaml#/definitions 92 $ref: /schemas/types.yaml#/definitions/uint32
93 description: | 93 description: |
94 Specifies the negative reference inp 94 Specifies the negative reference input as defined in
95 <dt-bindings/iio/adc/fsl-imx25-gcq.h 95 <dt-bindings/iio/adc/fsl-imx25-gcq.h>
96 0: XN ground reference 96 0: XN ground reference
97 1: YN ground reference 97 1: YN ground reference
98 2: Internal ground reference 98 2: Internal ground reference
99 3: External ground reference (defaul 99 3: External ground reference (default)
100 minimum: 0 100 minimum: 0
101 maximum: 3 101 maximum: 3
102 102
103 required: 103 required:
104 - reg 104 - reg
105 105
106 additionalProperties: false 106 additionalProperties: false
107 107
108 additionalProperties: false 108 additionalProperties: false
109 109
110 examples: 110 examples:
111 - | 111 - |
112 #include <dt-bindings/iio/adc/fsl-imx25-gc 112 #include <dt-bindings/iio/adc/fsl-imx25-gcq.h>
113 soc { 113 soc {
114 #address-cells = <1>; 114 #address-cells = <1>;
115 #size-cells = <1>; 115 #size-cells = <1>;
116 adc@50030800 { 116 adc@50030800 {
117 compatible = "fsl,imx25-gcq"; 117 compatible = "fsl,imx25-gcq";
118 reg = <0x50030800 0x60>; 118 reg = <0x50030800 0x60>;
119 interrupt-parent = <&tscadc>; 119 interrupt-parent = <&tscadc>;
120 interrupts = <1>; 120 interrupts = <1>;
121 #address-cells = <1>; 121 #address-cells = <1>;
122 #size-cells = <0>; 122 #size-cells = <0>;
123 123
124 inaux@5 { 124 inaux@5 {
125 reg = <5>; 125 reg = <5>;
126 fsl,adc-refp = <MX25_ADC_REFP_ 126 fsl,adc-refp = <MX25_ADC_REFP_INT>;
127 fsl,adc-refn = <MX25_ADC_REFN_ 127 fsl,adc-refn = <MX25_ADC_REFN_NGND>;
128 }; 128 };
129 }; 129 };
130 }; 130 };
131 ... 131 ...
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