xref: /linux/Documentation/devicetree/bindings/soc/mediatek/mediatek,mt8183-dvfsrc.yaml (revision 7f71507851fc7764b36a3221839607d3a45c2025) 
1# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/soc/mediatek/mediatek,mt8183-dvfsrc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: MediaTek Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC)
8
9description:
10  The Dynamic Voltage and Frequency Scaling Resource Collector (DVFSRC) is a
11  Hardware module used to collect all the requests from both software and the
12  various remote processors embedded into the SoC and decide about a minimum
13  operating voltage and a minimum DRAM frequency to fulfill those requests in
14  an effort to provide the best achievable performance per watt.
15  This hardware IP is capable of transparently performing direct register R/W
16  on all of the DVFSRC-controlled regulators and SoC bandwidth knobs.
17
18maintainers:
19  - AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
20  - Henry Chen <henryc.chen@mediatek.com>
21
22properties:
23  compatible:
24    oneOf:
25      - enum:
26          - mediatek,mt8183-dvfsrc
27          - mediatek,mt8195-dvfsrc
28      - items:
29          - const: mediatek,mt8192-dvfsrc
30          - const: mediatek,mt8195-dvfsrc
31
32  reg:
33    maxItems: 1
34    description: DVFSRC common register address and length.
35
36  regulators:
37    type: object
38    $ref: /schemas/regulator/mediatek,mt6873-dvfsrc-regulator.yaml#
39
40  interconnect:
41    type: object
42    $ref: /schemas/interconnect/mediatek,mt8183-emi.yaml#
43
44required:
45  - compatible
46  - reg
47
48additionalProperties: false
49
50examples:
51  - |
52    soc {
53        #address-cells = <2>;
54        #size-cells = <2>;
55
56        system-controller@10012000 {
57            compatible = "mediatek,mt8195-dvfsrc";
58            reg = <0 0x10012000 0 0x1000>;
59
60            regulators {
61                compatible = "mediatek,mt8195-dvfsrc-regulator";
62
63                dvfsrc_vcore: dvfsrc-vcore {
64                        regulator-name = "dvfsrc-vcore";
65                        regulator-min-microvolt = <550000>;
66                        regulator-max-microvolt = <750000>;
67                        regulator-always-on;
68                };
69
70                dvfsrc_vscp: dvfsrc-vscp {
71                        regulator-name = "dvfsrc-vscp";
72                        regulator-min-microvolt = <550000>;
73                        regulator-max-microvolt = <750000>;
74                        regulator-always-on;
75                };
76            };
77
78            emi_icc: interconnect {
79                compatible = "mediatek,mt8195-emi";
80                #interconnect-cells = <1>;
81            };
82        };
83    };
84