xref: /freebsd/sys/contrib/device-tree/Bindings/perf/arm,smmu-v3-pmcg.yaml (revision 02e9120893770924227138ba49df1edb3896112a) 
1# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
2%YAML 1.2
3---
4$id: http://devicetree.org/schemas/perf/arm,smmu-v3-pmcg.yaml#
5$schema: http://devicetree.org/meta-schemas/core.yaml#
6
7title: Arm SMMUv3 Performance Monitor Counter Group
8
9maintainers:
10  - Will Deacon <will@kernel.org>
11  - Robin Murphy <robin.murphy@arm.com>
12
13description: |
14  An SMMUv3 may have several Performance Monitor Counter Group (PMCG).
15  They are standalone performance monitoring units that support both
16  architected and IMPLEMENTATION DEFINED event counters.
17
18properties:
19  $nodename:
20    pattern: "^pmu@[0-9a-f]*"
21  compatible:
22    oneOf:
23      - items:
24          - const: arm,mmu-600-pmcg
25          - const: arm,smmu-v3-pmcg
26      - const: arm,smmu-v3-pmcg
27
28  reg:
29    items:
30      - description: Register page 0
31      - description: Register page 1, if SMMU_PMCG_CFGR.RELOC_CTRS = 1
32    minItems: 1
33
34  interrupts:
35    maxItems: 1
36
37  msi-parent: true
38
39required:
40  - compatible
41  - reg
42
43anyOf:
44  - required:
45      - interrupts
46  - required:
47      - msi-parent
48
49additionalProperties: false
50
51examples:
52  - |
53    #include <dt-bindings/interrupt-controller/arm-gic.h>
54    #include <dt-bindings/interrupt-controller/irq.h>
55
56    pmu@2b420000 {
57            compatible = "arm,smmu-v3-pmcg";
58            reg = <0x2b420000 0x1000>,
59                  <0x2b430000 0x1000>;
60            interrupts = <GIC_SPI 80 IRQ_TYPE_EDGE_RISING>;
61            msi-parent = <&its 0xff0000>;
62    };
63
64    pmu@2b440000 {
65            compatible = "arm,smmu-v3-pmcg";
66            reg = <0x2b440000 0x1000>,
67                  <0x2b450000 0x1000>;
68            interrupts = <GIC_SPI 81 IRQ_TYPE_EDGE_RISING>;
69            msi-parent = <&its 0xff0000>;
70    };
71