xref: /linux/Documentation/devicetree/bindings/i2c/renesas,riic.yaml (revision e7e86d7697c6ed1dbbde18d7185c35b6967945ed) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/i2c/renesas,riic.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Renesas RZ/A and RZ/G2L I2C Bus Interface (RIIC)
8
9maintainers:
10  - Chris Brandt <chris.brandt@renesas.com>
11  - Wolfram Sang <wsa+renesas@sang-engineering.com>
12
13properties:
14  compatible:
15    oneOf:
16      - items:
17          - enum:
18              - renesas,riic-r7s72100   # RZ/A1H
19              - renesas,riic-r7s9210    # RZ/A2M
20              - renesas,riic-r9a07g043  # RZ/G2UL and RZ/Five
21              - renesas,riic-r9a07g044  # RZ/G2{L,LC}
22              - renesas,riic-r9a07g054  # RZ/V2L
23          - const: renesas,riic-rz      # RZ/A or RZ/G2L
24
25      - items:
26          - enum:
27              - renesas,riic-r9a08g045   # RZ/G3S
28              - renesas,riic-r9a09g047   # RZ/G3E
29              - renesas,riic-r9a09g056   # RZ/V2N
30          - const: renesas,riic-r9a09g057   # RZ/V2H(P)
31
32      - enum:
33          - renesas,riic-r9a09g057   # RZ/V2H(P)
34          - renesas,riic-r9a09g077   # RZ/T2H
35
36      - items:
37          - const: renesas,riic-r9a09g087  # RZ/N2H
38          - const: renesas,riic-r9a09g077  # RZ/T2H
39
40  reg:
41    maxItems: 1
42
43  interrupts:
44    oneOf:
45      - items:
46          - description: Transmit End Interrupt
47          - description: Receive Data Full Interrupt
48          - description: Transmit Data Empty Interrupt
49          - description: Stop Condition Detection Interrupt
50          - description: Start Condition Detection Interrupt
51          - description: NACK Reception Interrupt
52          - description: Arbitration-Lost Interrupt
53          - description: Timeout Interrupt
54      - items:
55          - description: Transfer Error Or Event Generation
56          - description: Receive Data Full Interrupt
57          - description: Transmit Data Empty Interrupt
58          - description: Transmit End Interrupt
59
60  interrupt-names:
61    oneOf:
62      - items:
63          - const: tei
64          - const: ri
65          - const: ti
66          - const: spi
67          - const: sti
68          - const: naki
69          - const: ali
70          - const: tmoi
71      - items:
72          - const: eei
73          - const: rxi
74          - const: txi
75          - const: tei
76
77  clock-frequency:
78    description:
79      Desired I2C bus clock frequency in Hz. The absence of this property
80      indicates the default frequency 100 kHz.
81
82  clocks:
83    maxItems: 1
84
85  power-domains:
86    maxItems: 1
87
88  resets:
89    maxItems: 1
90
91required:
92  - compatible
93  - reg
94  - interrupts
95  - interrupt-names
96  - clocks
97  - clock-frequency
98  - power-domains
99  - '#address-cells'
100  - '#size-cells'
101
102allOf:
103  - $ref: /schemas/i2c/i2c-controller.yaml#
104
105  - if:
106      properties:
107        compatible:
108          contains:
109            const: renesas,riic-r9a09g077
110    then:
111      properties:
112        interrupts:
113          maxItems: 4
114        interrupt-names:
115          maxItems: 4
116        resets: false
117    else:
118      properties:
119        interrupts:
120          minItems: 8
121        interrupt-names:
122          minItems: 8
123
124  - if:
125      properties:
126        compatible:
127          contains:
128            enum:
129              - renesas,riic-r9a07g043
130              - renesas,riic-r9a07g044
131              - renesas,riic-r9a07g054
132              - renesas,riic-r9a09g057
133    then:
134      required:
135        - resets
136
137unevaluatedProperties: false
138
139examples:
140  - |
141    #include <dt-bindings/clock/r7s72100-clock.h>
142    #include <dt-bindings/interrupt-controller/arm-gic.h>
143
144    i2c0: i2c@fcfee000 {
145        compatible = "renesas,riic-r7s72100", "renesas,riic-rz";
146        reg = <0xfcfee000 0x44>;
147        interrupts = <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
148                     <GIC_SPI 158 IRQ_TYPE_EDGE_RISING>,
149                     <GIC_SPI 159 IRQ_TYPE_EDGE_RISING>,
150                     <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
151                     <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
152                     <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
153                     <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
154                     <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
155        interrupt-names = "tei", "ri", "ti", "spi", "sti", "naki", "ali",
156                          "tmoi";
157        clocks = <&mstp9_clks R7S72100_CLK_I2C0>;
158        clock-frequency = <100000>;
159        power-domains = <&cpg_clocks>;
160        #address-cells = <1>;
161        #size-cells = <0>;
162    };
163