summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/perf/arm,smmu-v3-pmcg.yaml
diff options
context:
space:
mode:
Diffstat (limited to 'Documentation/devicetree/bindings/perf/arm,smmu-v3-pmcg.yaml')
-rw-r--r--Documentation/devicetree/bindings/perf/arm,smmu-v3-pmcg.yaml70
1 files changed, 70 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/perf/arm,smmu-v3-pmcg.yaml b/Documentation/devicetree/bindings/perf/arm,smmu-v3-pmcg.yaml
new file mode 100644
index 000000000..a4b53a6a1
--- /dev/null
+++ b/Documentation/devicetree/bindings/perf/arm,smmu-v3-pmcg.yaml
@@ -0,0 +1,70 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/perf/arm,smmu-v3-pmcg.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Arm SMMUv3 Performance Monitor Counter Group
+
+maintainers:
+ - Will Deacon <will@kernel.org>
+ - Robin Murphy <robin.murphy@arm.com>
+
+description: |
+ An SMMUv3 may have several Performance Monitor Counter Group (PMCG).
+ They are standalone performance monitoring units that support both
+ architected and IMPLEMENTATION DEFINED event counters.
+
+properties:
+ $nodename:
+ pattern: "^pmu@[0-9a-f]*"
+ compatible:
+ oneOf:
+ - items:
+ - const: arm,mmu-600-pmcg
+ - const: arm,smmu-v3-pmcg
+ - const: arm,smmu-v3-pmcg
+
+ reg:
+ items:
+ - description: Register page 0
+ - description: Register page 1, if SMMU_PMCG_CFGR.RELOC_CTRS = 1
+ minItems: 1
+
+ interrupts:
+ maxItems: 1
+
+ msi-parent: true
+
+required:
+ - compatible
+ - reg
+
+anyOf:
+ - required:
+ - interrupts
+ - required:
+ - msi-parent
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/arm-gic.h>
+ #include <dt-bindings/interrupt-controller/irq.h>
+
+ pmu@2b420000 {
+ compatible = "arm,smmu-v3-pmcg";
+ reg = <0x2b420000 0x1000>,
+ <0x2b430000 0x1000>;
+ interrupts = <GIC_SPI 80 IRQ_TYPE_EDGE_RISING>;
+ msi-parent = <&its 0xff0000>;
+ };
+
+ pmu@2b440000 {
+ compatible = "arm,smmu-v3-pmcg";
+ reg = <0x2b440000 0x1000>,
+ <0x2b450000 0x1000>;
+ interrupts = <GIC_SPI 81 IRQ_TYPE_EDGE_RISING>;
+ msi-parent = <&its 0xff0000>;
+ };