1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/i2c/ingenic,i2c.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: Ingenic SoCs I2C controller
8
9 maintainers:
10 - Paul Cercueil <paul@crapouillou.net>
11
12 allOf:
13 - $ref: /schemas/i2c/i2c-controller.yaml#
14
15 properties:
16 $nodename:
17 pattern: "^i2c@[0-9a-f]+$"
18
19 compatible:
20 oneOf:
21 - enum:
22 - ingenic,jz4770-i2c
23 - ingenic,x1000-i2c
24 - items:
25 - const: ingenic,jz4780-i2c
26 - const: ingenic,jz4770-i2c
27
28 reg:
29 maxItems: 1
30
31 interrupts:
32 maxItems: 1
33
34 clocks:
35 maxItems: 1
36
37 clock-frequency:
38 enum: [ 100000, 400000 ]
39
40 dmas:
41 items:
42 - description: DMA controller phandle and request line for RX
43 - description: DMA controller phandle and request line for TX
44
45 dma-names:
46 items:
47 - const: rx
48 - const: tx
49
50 required:
51 - compatible
52 - reg
53 - interrupts
54 - clocks
55 - clock-frequency
56 - dmas
57 - dma-names
58
59 unevaluatedProperties: false
60
61 examples:
62 - |
63 #include <dt-bindings/clock/ingenic,jz4780-cgu.h>
64 #include <dt-bindings/dma/jz4780-dma.h>
65 #include <dt-bindings/interrupt-controller/irq.h>
66 i2c@10054000 {
67 compatible = "ingenic,jz4780-i2c", "ingenic,jz4770-i2c";
68 #address-cells = <1>;
69 #size-cells = <0>;
70 reg = <0x10054000 0x1000>;
71
72 interrupts = <56 IRQ_TYPE_LEVEL_LOW>;
73
74 clocks = <&cgu JZ4780_CLK_SMB4>;
75 pinctrl-names = "default";
76 pinctrl-0 = <&pins_i2c4_data>;
77
78 dmas = <&dma JZ4780_DMA_SMB4_RX 0xffffffff>,
79 <&dma JZ4780_DMA_SMB4_TX 0xffffffff>;
80 dma-names = "rx", "tx";
81
82 clock-frequency = <400000>;
83
84 rtc@51 {
85 compatible = "nxp,pcf8563";
86 reg = <0x51>;
87
88 interrupts = <30 IRQ_TYPE_LEVEL_LOW>;
89 };
90 };
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