xref: /linux/Documentation/devicetree/bindings/spmi/qcom,spmi-pmic-arb.yaml (revision f14aa5ea415b8add245e976bfab96a12986c6843) 
1# SPDX-License-Identifier: GPL-2.0-only
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/spmi/qcom,spmi-pmic-arb.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Qualcomm SPMI Controller (PMIC Arbiter)
8
9maintainers:
10  - Stephen Boyd <sboyd@kernel.org>
11
12description: |
13  The SPMI PMIC Arbiter is found on Snapdragon chipsets. It is an SPMI
14  controller with wrapping arbitration logic to allow for multiple on-chip
15  devices to control a single SPMI master.
16
17  The PMIC Arbiter can also act as an interrupt controller, providing interrupts
18  to slave devices.
19
20allOf:
21  - $ref: spmi.yaml
22
23properties:
24  compatible:
25    const: qcom,spmi-pmic-arb
26
27  reg:
28    oneOf:
29      - items: # V1
30          - description: core registers
31          - description: interrupt controller registers
32          - description: configuration registers
33      - items: # V2
34          - description: core registers
35          - description: tx-channel per virtual slave regosters
36          - description: rx-channel (called observer) per virtual slave registers
37          - description: interrupt controller registers
38          - description: configuration registers
39
40  reg-names:
41    oneOf:
42      - items:
43          - const: core
44          - const: intr
45          - const: cnfg
46      - items:
47          - const: core
48          - const: chnls
49          - const: obsrvr
50          - const: intr
51          - const: cnfg
52
53  interrupts:
54    maxItems: 1
55
56  interrupt-names:
57    const: periph_irq
58
59  interrupt-controller: true
60
61  '#address-cells': true
62
63  '#interrupt-cells':
64    const: 4
65    description: |
66      cell 1: slave ID for the requested interrupt (0-15)
67      cell 2: peripheral ID for requested interrupt (0-255)
68      cell 3: the requested peripheral interrupt (0-7)
69      cell 4: interrupt flags indicating level-sense information,
70              as defined in dt-bindings/interrupt-controller/irq.h
71
72  '#size-cells': true
73
74  qcom,ee:
75    $ref: /schemas/types.yaml#/definitions/uint32
76    minimum: 0
77    maximum: 5
78    description: >
79      indicates the active Execution Environment identifier
80
81  qcom,channel:
82    $ref: /schemas/types.yaml#/definitions/uint32
83    minimum: 0
84    maximum: 5
85    description: >
86      which of the PMIC Arb provided channels to use for accesses
87
88  qcom,bus-id:
89    $ref: /schemas/types.yaml#/definitions/uint32
90    minimum: 0
91    maximum: 1
92    description: >
93      SPMI bus instance. only applicable to PMIC arbiter version 7 and beyond.
94      Supported values, 0 = primary bus, 1 = secondary bus
95    deprecated: true
96
97required:
98  - compatible
99  - reg-names
100  - qcom,ee
101  - qcom,channel
102
103unevaluatedProperties: false
104
105examples:
106  - |
107    spmi@fc4cf000 {
108        compatible = "qcom,spmi-pmic-arb";
109        reg-names = "core", "intr", "cnfg";
110        reg = <0xfc4cf000 0x1000>,
111              <0xfc4cb000 0x1000>,
112              <0xfc4ca000 0x1000>;
113
114        interrupt-names = "periph_irq";
115        interrupts = <0 190 0>;
116
117        qcom,ee = <0>;
118        qcom,channel = <0>;
119
120        #address-cells = <2>;
121        #size-cells = <0>;
122
123        interrupt-controller;
124        #interrupt-cells = <4>;
125
126        qcom,bus-id = <0>;
127    };
128
129