1 # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/i2c/i2c-mpc.yaml#
5 $schema: http://devicetree.org/meta-schemas/core.yaml#
6
7 title: I2C-Bus adapter for MPC824x/83xx/85xx/86xx/512x/52xx SoCs
8
9 maintainers:
10 - Chris Packham <chris.packham@alliedtelesis.co.nz>
11
12 allOf:
13 - $ref: /schemas/i2c/i2c-controller.yaml#
14
15 properties:
16 compatible:
17 oneOf:
18 - items:
19 - enum:
20 - mpc5200-i2c
21 - fsl,mpc5200-i2c
22 - fsl,mpc5121-i2c
23 - fsl,mpc8313-i2c
24 - fsl,mpc8543-i2c
25 - fsl,mpc8544-i2c
26 - const: fsl-i2c
27 - items:
28 - const: fsl,mpc5200b-i2c
29 - const: fsl,mpc5200-i2c
30 - const: fsl-i2c
31
32 reg:
33 maxItems: 1
34
35 interrupts:
36 maxItems: 1
37
38 fsl,preserve-clocking:
39 $ref: /schemas/types.yaml#/definitions/flag
40 description: |
41 if defined, the clock settings from the bootloader are
42 preserved (not touched)
43
44 fsl,timeout:
45 $ref: /schemas/types.yaml#/definitions/uint32
46 deprecated: true
47 description: |
48 I2C bus timeout in microseconds
49
50 fsl,i2c-erratum-a004447:
51 $ref: /schemas/types.yaml#/definitions/flag
52 description: |
53 Indicates the presence of QorIQ erratum A-004447, which
54 says that the standard i2c recovery scheme mechanism does
55 not work and an alternate implementation is needed.
56
57 required:
58 - compatible
59 - reg
60 - interrupts
61
62 unevaluatedProperties: false
63
64 examples:
65 - |
66 /* MPC5121 based board */
67 i2c@1740 {
68 #address-cells = <1>;
69 #size-cells = <0>;
70 compatible = "fsl,mpc5121-i2c", "fsl-i2c";
71 reg = <0x1740 0x20>;
72 interrupts = <11 0x8>;
73 interrupt-parent = <&ipic>;
74 clock-frequency = <100000>;
75 };
76
77 - |
78 /* MPC5200B based board */
79 i2c@3d00 {
80 #address-cells = <1>;
81 #size-cells = <0>;
82 compatible = "fsl,mpc5200b-i2c", "fsl,mpc5200-i2c", "fsl-i2c";
83 reg = <0x3d00 0x40>;
84 interrupts = <2 15 0>;
85 interrupt-parent = <&mpc5200_pic>;
86 fsl,preserve-clocking;
87 };
88
89 - |
90 /* MPC8544 base board */
91 i2c@3100 {
92 #address-cells = <1>;
93 #size-cells = <0>;
94 compatible = "fsl,mpc8544-i2c", "fsl-i2c";
95 reg = <0x3100 0x100>;
96 interrupts = <43 2>;
97 interrupt-parent = <&mpic>;
98 clock-frequency = <400000>;
99 i2c-transfer-timeout-us = <10000>;
100 };
101 ...
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