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