xref: /linux/Documentation/devicetree/bindings/i2c/spacemit,k1-i2c.yaml (revision e7e86d7697c6ed1dbbde18d7185c35b6967945ed) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/i2c/spacemit,k1-i2c.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: I2C controller embedded in SpacemiT's K1 SoC
8
9maintainers:
10  - Troy Mitchell <troymitchell988@gmail.com>
11
12properties:
13  compatible:
14    const: spacemit,k1-i2c
15
16  reg:
17    maxItems: 1
18
19  interrupts:
20    maxItems: 1
21
22  clocks:
23    items:
24      - description: I2C Functional Clock
25      - description: APB Bus Clock
26
27  clock-names:
28    items:
29      - const: func
30      - const: bus
31
32  clock-frequency:
33    description: |
34      K1 support three different modes which running different frequencies
35      standard speed mode: up to 100000 (100Hz)
36      fast speed mode    : up to 400000 (400Hz)
37      high speed mode    : up to 3300000 (3.3Mhz)
38    default: 400000
39    maximum: 3300000
40
41required:
42  - compatible
43  - reg
44  - interrupts
45  - clocks
46
47unevaluatedProperties: false
48
49examples:
50  - |
51    i2c@d4010800 {
52        compatible = "spacemit,k1-i2c";
53        reg = <0xd4010800 0x38>;
54        interrupt-parent = <&plic>;
55        interrupts = <36>;
56        clocks =<&ccu 32>, <&ccu 84>;
57        clock-names = "func", "bus";
58        clock-frequency = <100000>;
59    };
60
61...
62