xref: /linux/Documentation/devicetree/bindings/i2c/renesas,riic.yaml (revision 6e7fd890f1d6ac83805409e9c346240de2705584) 
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
13allOf:
14  - $ref: /schemas/i2c/i2c-controller.yaml#
15
16properties:
17  compatible:
18    oneOf:
19      - items:
20          - enum:
21              - renesas,riic-r7s72100   # RZ/A1H
22              - renesas,riic-r7s9210    # RZ/A2M
23              - renesas,riic-r9a07g043  # RZ/G2UL and RZ/Five
24              - renesas,riic-r9a07g044  # RZ/G2{L,LC}
25              - renesas,riic-r9a07g054  # RZ/V2L
26          - const: renesas,riic-rz      # RZ/A or RZ/G2L
27
28      - const: renesas,riic-r9a09g057   # RZ/V2H(P)
29
30  reg:
31    maxItems: 1
32
33  interrupts:
34    items:
35      - description: Transmit End Interrupt
36      - description: Receive Data Full Interrupt
37      - description: Transmit Data Empty Interrupt
38      - description: Stop Condition Detection Interrupt
39      - description: Start Condition Detection Interrupt
40      - description: NACK Reception Interrupt
41      - description: Arbitration-Lost Interrupt
42      - description: Timeout Interrupt
43
44  interrupt-names:
45    items:
46      - const: tei
47      - const: ri
48      - const: ti
49      - const: spi
50      - const: sti
51      - const: naki
52      - const: ali
53      - const: tmoi
54
55  clock-frequency:
56    description:
57      Desired I2C bus clock frequency in Hz. The absence of this property
58      indicates the default frequency 100 kHz.
59
60  clocks:
61    maxItems: 1
62
63  power-domains:
64    maxItems: 1
65
66  resets:
67    maxItems: 1
68
69required:
70  - compatible
71  - reg
72  - interrupts
73  - interrupt-names
74  - clocks
75  - clock-frequency
76  - power-domains
77  - '#address-cells'
78  - '#size-cells'
79
80if:
81  properties:
82    compatible:
83      contains:
84        enum:
85          - renesas,riic-r9a07g043
86          - renesas,riic-r9a07g044
87          - renesas,riic-r9a07g054
88then:
89  required:
90    - resets
91
92unevaluatedProperties: false
93
94examples:
95  - |
96    #include <dt-bindings/clock/r7s72100-clock.h>
97    #include <dt-bindings/interrupt-controller/arm-gic.h>
98
99    i2c0: i2c@fcfee000 {
100        compatible = "renesas,riic-r7s72100", "renesas,riic-rz";
101        reg = <0xfcfee000 0x44>;
102        interrupts = <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
103                     <GIC_SPI 158 IRQ_TYPE_EDGE_RISING>,
104                     <GIC_SPI 159 IRQ_TYPE_EDGE_RISING>,
105                     <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
106                     <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
107                     <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
108                     <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
109                     <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
110        interrupt-names = "tei", "ri", "ti", "spi", "sti", "naki", "ali",
111                          "tmoi";
112        clocks = <&mstp9_clks R7S72100_CLK_I2C0>;
113        clock-frequency = <100000>;
114        power-domains = <&cpg_clocks>;
115        #address-cells = <1>;
116        #size-cells = <0>;
117    };
118