1 # SPDX-License-Identifier: (GPL-2.0-only OR BS
2 %YAML 1.2
3 ---
4 $id: http://devicetree.org/schemas/opp/ti,omap
5 $schema: http://devicetree.org/meta-schemas/co
6
7 title: Texas Instruments OMAP compatible OPP s
8
9 description:
10 OMAP5, DRA7, and AM57 families of SoCs have
11 registers, which contain OPP-specific voltag
12 for the specific device. This binding provid
13 needed to describe such a hardware values an
14 the primary regulator during an OPP transiti
15
16 Also, some supplies may have an associated v
17 Body Bias regulator, which must transition i
18 w.r.t the vdd-supply and clk when making an
19 supplying two regulators to the device that
20 transitions, we can use the multi-regulator
21 the OPP core to describe both regulators the
22 OPP core binding Documentation/devicetree/bi
23 provides further information (refer to Examp
24 regulators).
25
26 maintainers:
27 - Nishanth Menon <nm@ti.com>
28
29 properties:
30 $nodename:
31 pattern: '^opp-supply(@[0-9a-f]+)?$'
32
33 compatible:
34 oneOf:
35 - description: Basic OPP supply controll
36 const: ti,omap-opp-supply
37 - description: OMAP5+ optimized voltages
38 VBB.
39 const: ti,omap5-opp-supply
40 - description: OMAP5+ optimized voltages
41 const: ti,omap5-core-opp-supply
42
43 reg:
44 maxItems: 1
45
46 ti,absolute-max-voltage-uv:
47 $ref: /schemas/types.yaml#/definitions/uin
48 description: Absolute maximum voltage for
49 minimum: 750000
50 maximum: 1500000
51
52 ti,efuse-settings:
53 description: An array of u32 tuple items p
54 optimized efuse configuration.
55 minItems: 1
56 $ref: /schemas/types.yaml#/definitions/uin
57 items:
58 items:
59 - description: Reference voltage in mi
60 minimum: 750000
61 maximum: 1500000
62 multipleOf: 10000
63 - description: efuse offset where the
64 multipleOf: 4
65 maximum: 256
66
67 required:
68 - compatible
69 - ti,absolute-max-voltage-uv
70
71 allOf:
72 - if:
73 not:
74 properties:
75 compatible:
76 contains:
77 const: ti,omap-opp-supply
78 then:
79 required:
80 - reg
81 - ti,efuse-settings
82
83 additionalProperties: false
84
85 examples:
86 - |
87 opp-supply {
88 compatible = "ti,omap-opp-supply";
89 ti,absolute-max-voltage-uv = <1375000>
90 };
91 - |
92 opp-supply@4a003b20 {
93 compatible = "ti,omap5-opp-supply";
94 reg = <0x4a003b20 0x8>;
95 ti,efuse-settings =
96 /* uV offset */
97 <1060000 0x0>,
98 <1160000 0x4>,
99 <1210000 0x8>;
100 ti,absolute-max-voltage-uv = <1500000>
101 };
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