xref: /linux/Documentation/devicetree/bindings/interrupt-controller/qcom,pdc.yaml (revision 8dd765a5d769c521d73931850d1c8708fbc490cb) 
1# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/interrupt-controller/qcom,pdc.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: PDC interrupt controller
8
9maintainers:
10  - Bjorn Andersson <bjorn.andersson@linaro.org>
11
12description: |
13  Qualcomm Technologies Inc. SoCs based on the RPM Hardened architecture have a
14  Power Domain Controller (PDC) that is on always-on domain. In addition to
15  providing power control for the power domains, the hardware also has an
16  interrupt controller that can be used to help detect edge low interrupts as
17  well detect interrupts when the GIC is non-operational.
18
19  GIC is parent interrupt controller at the highest level. Platform interrupt
20  controller PDC is next in hierarchy, followed by others. Drivers requiring
21  wakeup capabilities of their device interrupts routed through the PDC, must
22  specify PDC as their interrupt controller and request the PDC port associated
23  with the GIC interrupt. See example below.
24
25properties:
26  compatible:
27    items:
28      - enum:
29          - qcom,qdu1000-pdc
30          - qcom,sa8775p-pdc
31          - qcom,sc7180-pdc
32          - qcom,sc7280-pdc
33          - qcom,sc8280xp-pdc
34          - qcom,sdm670-pdc
35          - qcom,sdm845-pdc
36          - qcom,sdx55-pdc
37          - qcom,sdx65-pdc
38          - qcom,sm6350-pdc
39          - qcom,sm8150-pdc
40          - qcom,sm8250-pdc
41          - qcom,sm8350-pdc
42          - qcom,sm8450-pdc
43      - const: qcom,pdc
44
45  reg:
46    minItems: 1
47    items:
48      - description: PDC base register region
49      - description: Edge or Level config register for SPI interrupts
50
51  '#interrupt-cells':
52    const: 2
53
54  interrupt-controller: true
55
56  qcom,pdc-ranges:
57    $ref: /schemas/types.yaml#/definitions/uint32-matrix
58    minItems: 1
59    maxItems: 128 # no hard limit
60    items:
61      items:
62        - description: starting PDC port
63        - description: GIC hwirq number for the PDC port
64        - description: number of interrupts in sequence
65    description: |
66      Specifies the PDC pin offset and the number of PDC ports.
67      The tuples indicates the valid mapping of valid PDC ports
68      and their hwirq mapping.
69
70required:
71  - compatible
72  - reg
73  - '#interrupt-cells'
74  - interrupt-controller
75  - qcom,pdc-ranges
76
77additionalProperties: false
78
79examples:
80  - |
81    #include <dt-bindings/interrupt-controller/irq.h>
82
83    pdc: interrupt-controller@b220000 {
84        compatible = "qcom,sdm845-pdc", "qcom,pdc";
85        reg = <0xb220000 0x30000>;
86        qcom,pdc-ranges = <0 512 94>, <94 641 15>, <115 662 7>;
87        #interrupt-cells = <2>;
88        interrupt-parent = <&intc>;
89        interrupt-controller;
90    };
91
92    wake-device {
93        interrupts-extended = <&pdc 2 IRQ_TYPE_LEVEL_HIGH>;
94    };
95