1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-C 1 # SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2 %YAML 1.2 2 %YAML 1.2
3 --- 3 ---
4 $id: http://devicetree.org/schemas/i2c/hisilic 4 $id: http://devicetree.org/schemas/i2c/hisilicon,ascend910-i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/co 5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6 6
7 title: HiSilicon common I2C controller 7 title: HiSilicon common I2C controller
8 8
9 maintainers: 9 maintainers:
10 - Yicong Yang <yangyicong@hisilicon.com> 10 - Yicong Yang <yangyicong@hisilicon.com>
11 11
12 description: 12 description:
13 The HiSilicon common I2C controller can be u 13 The HiSilicon common I2C controller can be used for many different
14 types of SoC such as Huawei Ascend AI series 14 types of SoC such as Huawei Ascend AI series chips.
15 15
16 allOf: 16 allOf:
17 - $ref: /schemas/i2c/i2c-controller.yaml# 17 - $ref: /schemas/i2c/i2c-controller.yaml#
18 18
19 properties: 19 properties:
20 compatible: 20 compatible:
21 const: hisilicon,ascend910-i2c 21 const: hisilicon,ascend910-i2c
22 22
23 reg: 23 reg:
24 maxItems: 1 24 maxItems: 1
25 25
26 interrupts: 26 interrupts:
27 maxItems: 1 27 maxItems: 1
28 28
29 clocks: 29 clocks:
30 maxItems: 1 30 maxItems: 1
31 31
32 clock-frequency: 32 clock-frequency:
33 default: 400000 33 default: 400000
34 34
35 i2c-sda-falling-time-ns: 35 i2c-sda-falling-time-ns:
36 default: 343 36 default: 343
37 37
38 i2c-scl-falling-time-ns: 38 i2c-scl-falling-time-ns:
39 default: 203 39 default: 203
40 40
41 i2c-sda-hold-time-ns: 41 i2c-sda-hold-time-ns:
42 default: 830 42 default: 830
43 43
44 i2c-scl-rising-time-ns: 44 i2c-scl-rising-time-ns:
45 default: 365 45 default: 365
46 46
47 i2c-digital-filter-width-ns: 47 i2c-digital-filter-width-ns:
48 default: 0 48 default: 0
49 49
50 required: 50 required:
51 - compatible 51 - compatible
52 - reg 52 - reg
53 - interrupts 53 - interrupts
54 54
55 unevaluatedProperties: false 55 unevaluatedProperties: false
56 56
57 examples: 57 examples:
58 - | 58 - |
59 #include <dt-bindings/interrupt-controller 59 #include <dt-bindings/interrupt-controller/arm-gic.h>
60 60
61 i2c@38b0000 { 61 i2c@38b0000 {
62 compatible = "hisilicon,ascend910-i2c"; 62 compatible = "hisilicon,ascend910-i2c";
63 reg = <0x38b0000 0x10000>; 63 reg = <0x38b0000 0x10000>;
64 interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL 64 interrupts = <GIC_SPI 120 IRQ_TYPE_LEVEL_HIGH>;
65 i2c-sda-falling-time-ns = <56>; 65 i2c-sda-falling-time-ns = <56>;
66 i2c-scl-falling-time-ns = <56>; 66 i2c-scl-falling-time-ns = <56>;
67 i2c-sda-hold-time-ns = <56>; 67 i2c-sda-hold-time-ns = <56>;
68 i2c-scl-rising-time-ns = <56>; 68 i2c-scl-rising-time-ns = <56>;
69 i2c-digital-filter; 69 i2c-digital-filter;
70 i2c-digital-filter-width-ns = <0x0>; 70 i2c-digital-filter-width-ns = <0x0>;
71 clocks = <&alg_clk>; 71 clocks = <&alg_clk>;
72 clock-frequency = <400000>; 72 clock-frequency = <400000>;
73 }; 73 };
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