1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/iio/adc/amlogic,meson-saradc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Amlogic Meson SAR (Successive Approximation Register) A/D converter
8
9 maintainers:
10 - Martin Blumenstingl <martin.blumenstingl@googlemail.com>
11
12 description:
13 Binding covers a range of ADCs found on Amlogic Meson SoCs.
14
15 properties:
16 compatible:
17 oneOf:
18 - const: amlogic,meson-saradc
19 - items:
20 - enum:
21 - amlogic,meson8-saradc
22 - amlogic,meson8b-saradc
23 - amlogic,meson8m2-saradc
24 - amlogic,meson-gxbb-saradc
25 - amlogic,meson-gxl-saradc
26 - amlogic,meson-gxm-saradc
27 - amlogic,meson-axg-saradc
28 - amlogic,meson-g12a-saradc
29 - const: amlogic,meson-saradc
30
31 reg:
32 maxItems: 1
33
34 interrupts:
35 description: Interrupt indicates end of sampling.
36 maxItems: 1
37
38 clocks:
39 minItems: 2
40 maxItems: 4
41
42 clock-names:
43 minItems: 2
44 items:
45 - const: clkin
46 - const: core
47 - const: adc_clk
48 - const: adc_sel
49
50 vref-supply: true
51
52 "#io-channel-cells":
53 const: 1
54
55 amlogic,hhi-sysctrl:
56 $ref: /schemas/types.yaml#/definitions/phandle
57 description:
58 Syscon which contains the 5th bit of the TSC (temperature sensor
59 coefficient) on Meson8b and Meson8m2 (which used to calibrate the
60 temperature sensor)
61
62 nvmem-cells:
63 description: phandle to the temperature_calib eFuse cells
64 maxItems: 1
65
66 nvmem-cell-names:
67 const: temperature_calib
68
69 power-domains:
70 maxItems: 1
71
72 allOf:
73 - if:
74 properties:
75 compatible:
76 contains:
77 enum:
78 - amlogic,meson8-saradc
79 - amlogic,meson8b-saradc
80 - amlogic,meson8m2-saradc
81 then:
82 properties:
83 clocks:
84 maxItems: 2
85 clock-names:
86 maxItems: 2
87 else:
88 properties:
89 nvmem-cells: false
90 mvmem-cel-names: false
91 clocks:
92 minItems: 4
93 clock-names:
94 minItems: 4
95
96 - if:
97 properties:
98 compatible:
99 contains:
100 enum:
101 - amlogic,meson8b-saradc
102 - amlogic,meson8m2-saradc
103 then:
104 properties:
105 amlogic,hhi-sysctrl: true
106 else:
107 properties:
108 amlogic,hhi-sysctrl: false
109
110 required:
111 - compatible
112 - reg
113 - interrupts
114 - clocks
115 - clock-names
116 - "#io-channel-cells"
117
118 additionalProperties: false
119
120 examples:
121 - |
122 #include <dt-bindings/interrupt-controller/irq.h>
123 #include <dt-bindings/clock/gxbb-clkc.h>
124 #include <dt-bindings/interrupt-controller/arm-gic.h>
125 soc {
126 #address-cells = <2>;
127 #size-cells = <2>;
128 adc@8680 {
129 compatible = "amlogic,meson-gxl-saradc", "amlogic,meson-saradc";
130 #io-channel-cells = <1>;
131 reg = <0x0 0x8680 0x0 0x34>;
132 interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;
133 clocks = <&xtal>,
134 <&clkc CLKID_SAR_ADC>,
135 <&clkc CLKID_SAR_ADC_CLK>,
136 <&clkc CLKID_SAR_ADC_SEL>;
137 clock-names = "clkin", "core", "adc_clk", "adc_sel";
138 };
139 adc@9680 {
140 compatible = "amlogic,meson8b-saradc", "amlogic,meson-saradc";
141 #io-channel-cells = <1>;
142 reg = <0x0 0x9680 0x0 0x34>;
143 interrupts = <GIC_SPI 73 IRQ_TYPE_EDGE_RISING>;
144 clocks = <&xtal>, <&clkc CLKID_SAR_ADC>;
145 clock-names = "clkin", "core";
146 nvmem-cells = <&tsens_caldata>;
147 nvmem-cell-names = "temperature_calib";
148 amlogic,hhi-sysctrl = <&hhi>;
149 };
150 };
151 ...
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