aspeed,ast2400-cf-fsi-master.yaml

 1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
 2%YAML 1.2
 3---
 4$id: http://devicetree.org/schemas/fsi/aspeed,ast2400-cf-fsi-master.yaml#
 5$schema: http://devicetree.org/meta-schemas/core.yaml#
 6
 7title: ASpeed ColdFire offloaded GPIO-based FSI master
 8
 9maintainers:
10  - Eddie James <eajames@linux.ibm.com>
11
12allOf:
13  - $ref: /schemas/fsi/fsi-controller.yaml#
14
15properties:
16  compatible:
17    enum:
18      - aspeed,ast2400-cf-fsi-master
19      - aspeed,ast2500-cf-fsi-master
20
21  clock-gpios:
22    maxItems: 1
23    description: GPIO for FSI clock
24
25  data-gpios:
26    maxItems: 1
27    description: GPIO for FSI data signal
28
29  enable-gpios:
30    maxItems: 1
31    description: GPIO for enable signal
32
33  trans-gpios:
34    maxItems: 1
35    description: GPIO for voltage translator enable
36
37  mux-gpios:
38    maxItems: 1
39    description:
40      GPIO for pin multiplexing with other functions (eg, external FSI masters)
41
42  memory-region:
43    maxItems: 1
44    description:
45      Reference to the reserved memory for the ColdFire. Must be 2M aligned on
46      AST2400 and 1M aligned on AST2500.
47
48  aspeed,cvic:
49    description: Reference to the CVIC node.
50    $ref: /schemas/types.yaml#/definitions/phandle
51
52  aspeed,sram:
53    description: Reference to the SRAM node.
54    $ref: /schemas/types.yaml#/definitions/phandle
55
56required:
57  - compatible
58  - clock-gpios
59  - data-gpios
60  - enable-gpios
61  - trans-gpios
62  - mux-gpios
63  - memory-region
64  - aspeed,cvic
65  - aspeed,sram
66
67unevaluatedProperties: false
68
69examples:
70  - |
71    fsi-master {
72      compatible = "aspeed,ast2500-cf-fsi-master";
73      clock-gpios = <&gpio 0>;
74      data-gpios = <&gpio 1>;
75      enable-gpios = <&gpio 2>;
76      trans-gpios = <&gpio 3>;
77      mux-gpios = <&gpio 4>;
78      memory-region = <&coldfire_memory>;
79      aspeed,cvic = <&cvic>;
80      aspeed,sram = <&sram>;
81    };