1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/ipmi/aspeed
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: ASPEED BMC KCS Devices
8
9 maintainers:
10 - Andrew Jeffery <andrew@aj.id.au>
11
12 description: |
13 The Aspeed BMC SoCs typically use the Keyboa
14 interfaces on the LPC bus for in-band IPMI c
15
16 properties:
17 compatible:
18 oneOf:
19 - description: Channel ID derived from r
20 items:
21 enum:
22 - aspeed,ast2400-kcs-bmc-v2
23 - aspeed,ast2500-kcs-bmc-v2
24 - aspeed,ast2600-kcs-bmc
25
26 - description: Old-style with explicit c
27 deprecated: true
28 items:
29 enum:
30 - aspeed,ast2400-kcs-bmc
31 - aspeed,ast2500-kcs-bmc
32
33 interrupts:
34 maxItems: 1
35
36 reg:
37 # maxItems: 3
38 items:
39 - description: IDR register
40 - description: ODR register
41 - description: STR register
42
43 aspeed,lpc-io-reg:
44 $ref: /schemas/types.yaml#/definitions/uin
45 minItems: 1
46 maxItems: 2
47 description: |
48 The host CPU LPC IO data and status addr
49 channels the status address is derived f
50 status address may be optionally provide
51
52 aspeed,lpc-interrupts:
53 $ref: /schemas/types.yaml#/definitions/uin
54 minItems: 2
55 maxItems: 2
56 description: |
57 A 2-cell property expressing the LPC Ser
58 level/sense encoding (specified in the s
59
60 Note that the generated interrupt is iss
61 thus the target interrupt controller is
62 devicetree.
63
64 kcs_chan:
65 deprecated: true
66 $ref: /schemas/types.yaml#/definitions/uin
67 description: The LPC channel number in the
68
69 kcs_addr:
70 deprecated: true
71 $ref: /schemas/types.yaml#/definitions/uin
72 description: The host CPU IO map address
73
74 required:
75 - compatible
76 - interrupts
77
78 additionalProperties: false
79
80 allOf:
81 - if:
82 properties:
83 compatible:
84 contains:
85 enum:
86 - aspeed,ast2400-kcs-bmc
87 - aspeed,ast2500-kcs-bmc
88 then:
89 required:
90 - kcs_chan
91 - kcs_addr
92 else:
93 required:
94 - reg
95 - aspeed,lpc-io-reg
96
97 examples:
98 - |
99 #include <dt-bindings/interrupt-controller
100 kcs3: kcs@24 {
101 compatible = "aspeed,ast2600-kcs-bmc";
102 reg = <0x24 0x1>, <0x30 0x1>, <0x3c 0x
103 aspeed,lpc-io-reg = <0xca2>;
104 aspeed,lpc-interrupts = <11 IRQ_TYPE_L
105 interrupts = <8>;
106 };
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