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
7 title: Renesas RZ/A and RZ/G2L I2C Bus Interface (RIIC)
8
9 maintainers:
10 - Chris Brandt <chris.brandt@renesas.com>
11 - Wolfram Sang <wsa+renesas@sang-engineering.com>
12
13 allOf:
14 - $ref: /schemas/i2c/i2c-controller.yaml#
15
16 properties:
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 - items:
29 - const: renesas,riic-r9a08g045 # RZ/G3S
30 - const: renesas,riic-r9a09g057 # RZ/V2H(P)
31
32 - const: renesas,riic-r9a09g057 # RZ/V2H(P)
33
34 reg:
35 maxItems: 1
36
37 interrupts:
38 items:
39 - description: Transmit End Interrupt
40 - description: Receive Data Full Interrupt
41 - description: Transmit Data Empty Interrupt
42 - description: Stop Condition Detection Interrupt
43 - description: Start Condition Detection Interrupt
44 - description: NACK Reception Interrupt
45 - description: Arbitration-Lost Interrupt
46 - description: Timeout Interrupt
47
48 interrupt-names:
49 items:
50 - const: tei
51 - const: ri
52 - const: ti
53 - const: spi
54 - const: sti
55 - const: naki
56 - const: ali
57 - const: tmoi
58
59 clock-frequency:
60 description:
61 Desired I2C bus clock frequency in Hz. The absence of this property
62 indicates the default frequency 100 kHz.
63
64 clocks:
65 maxItems: 1
66
67 power-domains:
68 maxItems: 1
69
70 resets:
71 maxItems: 1
72
73 required:
74 - compatible
75 - reg
76 - interrupts
77 - interrupt-names
78 - clocks
79 - clock-frequency
80 - power-domains
81 - '#address-cells'
82 - '#size-cells'
83
84 if:
85 properties:
86 compatible:
87 contains:
88 enum:
89 - renesas,riic-r9a07g043
90 - renesas,riic-r9a07g044
91 - renesas,riic-r9a07g054
92 then:
93 required:
94 - resets
95
96 unevaluatedProperties: false
97
98 examples:
99 - |
100 #include <dt-bindings/clock/r7s72100-clock.h>
101 #include <dt-bindings/interrupt-controller/arm-gic.h>
102
103 i2c0: i2c@fcfee000 {
104 compatible = "renesas,riic-r7s72100", "renesas,riic-rz";
105 reg = <0xfcfee000 0x44>;
106 interrupts = <GIC_SPI 157 IRQ_TYPE_LEVEL_HIGH>,
107 <GIC_SPI 158 IRQ_TYPE_EDGE_RISING>,
108 <GIC_SPI 159 IRQ_TYPE_EDGE_RISING>,
109 <GIC_SPI 160 IRQ_TYPE_LEVEL_HIGH>,
110 <GIC_SPI 161 IRQ_TYPE_LEVEL_HIGH>,
111 <GIC_SPI 162 IRQ_TYPE_LEVEL_HIGH>,
112 <GIC_SPI 163 IRQ_TYPE_LEVEL_HIGH>,
113 <GIC_SPI 164 IRQ_TYPE_LEVEL_HIGH>;
114 interrupt-names = "tei", "ri", "ti", "spi", "sti", "naki", "ali",
115 "tmoi";
116 clocks = <&mstp9_clks R7S72100_CLK_I2C0>;
117 clock-frequency = <100000>;
118 power-domains = <&cpg_clocks>;
119 #address-cells = <1>;
120 #size-cells = <0>;
121 };
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