1 # SPDX-License-Identifier: GPL-2.0
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/samsung,exynos-adc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Samsung Exynos Analog to Digital Converter (ADC)
8
9 maintainers:
10 - Krzysztof Kozlowski <krzk@kernel.org>
11
12 properties:
13 compatible:
14 oneOf:
15 - enum:
16 - samsung,exynos-adc-v1 # Exynos5250
17 - samsung,exynos-adc-v2
18 - samsung,exynos3250-adc
19 - samsung,exynos4212-adc # Exynos4212 and Exynos4412
20 - samsung,exynos7-adc
21 - samsung,s3c2410-adc
22 - samsung,s3c2416-adc
23 - samsung,s3c2440-adc
24 - samsung,s3c2443-adc
25 - samsung,s3c6410-adc
26 - samsung,s5pv210-adc
27 - items:
28 - enum:
29 - samsung,exynos5433-adc
30 - const: samsung,exynos7-adc
31
32 reg:
33 maxItems: 1
34
35 clocks:
36 description:
37 Phandle to ADC bus clock. For Exynos3250 additional clock is needed.
38 minItems: 1
39 maxItems: 2
40
41 clock-names:
42 description:
43 Must contain clock names (adc, sclk) matching phandles in clocks
44 property.
45 minItems: 1
46 maxItems: 2
47
48 interrupts:
49 description:
50 ADC interrupt followed by optional touchscreen interrupt.
51 minItems: 1
52 maxItems: 2
53
54 "#io-channel-cells":
55 const: 1
56
57 vdd-supply: true
58
59 samsung,syscon-phandle:
60 $ref: /schemas/types.yaml#/definitions/phandle
61 description:
62 Phandle to the PMU system controller node (to access the ADC_PHY
63 register on Exynos3250/4x12/5250/5420/5800).
64
65 has-touchscreen:
66 description:
67 If present, indicates that a touchscreen is connected and usable.
68 type: boolean
69
70 required:
71 - compatible
72 - reg
73 - clocks
74 - clock-names
75 - interrupts
76 - "#io-channel-cells"
77 - vdd-supply
78
79 additionalProperties:
80 type: object
81
82 allOf:
83 - if:
84 properties:
85 compatible:
86 contains:
87 enum:
88 - samsung,exynos-adc-v1
89 - samsung,exynos-adc-v2
90 - samsung,exynos3250-adc
91 - samsung,exynos4212-adc
92 then:
93 required:
94 - samsung,syscon-phandle
95
96 - if:
97 properties:
98 compatible:
99 contains:
100 enum:
101 - samsung,exynos3250-adc
102 then:
103 properties:
104 clocks:
105 minItems: 2
106 maxItems: 2
107 clock-names:
108 items:
109 - const: adc
110 - const: sclk
111 else:
112 properties:
113 clocks:
114 minItems: 1
115 maxItems: 1
116 clock-names:
117 items:
118 - const: adc
119
120 - if:
121 required:
122 - has-touchscreen
123 then:
124 properties:
125 interrupts:
126 minItems: 2
127 maxItems: 2
128
129 examples:
130 - |
131 adc: adc@12d10000 {
132 compatible = "samsung,exynos-adc-v1";
133 reg = <0x12d10000 0x100>;
134 interrupts = <0 106 0>;
135 #io-channel-cells = <1>;
136
137 clocks = <&clock 303>;
138 clock-names = "adc";
139
140 vdd-supply = <&buck5_reg>;
141 samsung,syscon-phandle = <&pmu_system_controller>;
142
143 /* NTC thermistor is a hwmon device */
144 thermistor {
145 compatible = "murata,ncp15wb473";
146 pullup-uv = <1800000>;
147 pullup-ohm = <47000>;
148 pulldown-ohm = <0>;
149 io-channels = <&adc 4>;
150 };
151 };
152
153 - |
154 #include <dt-bindings/clock/exynos3250.h>
155
156 adc@126c0000 {
157 compatible = "samsung,exynos3250-adc";
158 reg = <0x126c0000 0x100>;
159 interrupts = <0 137 0>;
160 #io-channel-cells = <1>;
161
162 clocks = <&cmu CLK_TSADC>,
163 <&cmu CLK_SCLK_TSADC>;
164 clock-names = "adc", "sclk";
165
166 vdd-supply = <&buck5_reg>;
167 samsung,syscon-phandle = <&pmu_system_controller>;
168 };
Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.