xref: /linux/Documentation/devicetree/bindings/iio/adc/renesas,rzn1-adc.yaml (revision 83bd89291f5cc866f60d32c34e268896c7ba8a3d) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/iio/adc/renesas,rzn1-adc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas RZ/N1 Analog to Digital Converter (ADC)
8
9maintainers:
10  - Herve Codina <herve.codina@bootlin.com>
11
12description:
13  The Renesas RZ/N1 ADC controller available in the Renesas RZ/N1 SoCs family
14  can use up to two internal ADC cores (ADC1 and ADC2) those internal cores are
15  handled through ADC controller virtual channels.
16
17properties:
18  compatible:
19    items:
20      - const: renesas,r9a06g032-adc   # RZ/N1D
21      - const: renesas,rzn1-adc
22
23  reg:
24    maxItems: 1
25
26  clocks:
27    items:
28      - description: APB internal bus clock
29      - description: ADC clock
30
31  clock-names:
32    items:
33      - const: pclk
34      - const: adc
35
36  power-domains:
37    maxItems: 1
38
39  adc1-avdd-supply:
40    description:
41      ADC1 analog power supply.
42
43  adc1-vref-supply:
44    description:
45      ADC1 reference voltage supply.
46
47  adc2-avdd-supply:
48    description:
49      ADC2 analog power supply.
50
51  adc2-vref-supply:
52    description:
53      ADC2 reference voltage supply.
54
55  '#io-channel-cells':
56    const: 1
57    description: |
58      Channels numbers available:
59        if ADC1 is used (i.e. adc1-{avdd,vref}-supply present):
60          - 0: ADC1 IN0
61          - 1: ADC1 IN1
62          - 2: ADC1 IN2
63          - 3: ADC1 IN3
64          - 4: ADC1 IN4
65          - 5: ADC1 IN6
66          - 6: ADC1 IN7
67          - 7: ADC1 IN8
68        if ADC2 is used (i.e. adc2-{avdd,vref}-supply present):
69          - 8: ADC2 IN0
70          - 9: ADC2 IN1
71          - 10: ADC2 IN2
72          - 11: ADC2 IN3
73          - 12: ADC2 IN4
74          - 13: ADC2 IN6
75          - 14: ADC2 IN7
76          - 15: ADC2 IN8
77
78required:
79  - compatible
80  - reg
81  - clocks
82  - clock-names
83  - power-domains
84  - '#io-channel-cells'
85
86# At least one of avvd/vref supplies
87anyOf:
88  - required:
89      - adc1-vref-supply
90      - adc1-avdd-supply
91  - required:
92      - adc2-vref-supply
93      - adc2-avdd-supply
94
95additionalProperties: false
96
97examples:
98  - |
99    #include <dt-bindings/clock/r9a06g032-sysctrl.h>
100
101    adc: adc@40065000 {
102      compatible = "renesas,r9a06g032-adc", "renesas,rzn1-adc";
103      reg = <0x40065000 0x200>;
104      clocks = <&sysctrl R9A06G032_HCLK_ADC>, <&sysctrl R9A06G032_CLK_ADC>;
105      clock-names = "pclk", "adc";
106      power-domains = <&sysctrl>;
107      adc1-avdd-supply = <&adc1_avdd>;
108      adc1-vref-supply = <&adc1_vref>;
109      #io-channel-cells = <1>;
110    };
111...
112