Thread (15 messages) flat view 15 messages, 3 authors, 2021-12-14
STALE1696d

[PATCH 5/5] dt-bindings: perf: Add compatible for Arm DSU-110

From: Robin Murphy <robin.murphy@arm.com>
Date: 2021-12-07 18:20:57
Also in: linux-arm-kernel
Subsystem: arm pmu profiling and debugging, open firmware and flattened device tree bindings, the rest · Maintainers: Will Deacon, Mark Rutland, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds

DSU-110 is the newest and shiniest for Armv9. Its programmer's model is
largely identical to the previous generation of DSUs, so we can treat it
as compatible, but it does have a a handful of extra IMP-DEF PMU events
to call its own. Thanks to the new notion of core complexes, the maximum
number of supported CPUs goes up as well.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 Documentation/devicetree/bindings/perf/arm,dsu-pmu.yaml | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)
diff --git a/Documentation/devicetree/bindings/perf/arm,dsu-pmu.yaml b/Documentation/devicetree/bindings/perf/arm,dsu-pmu.yaml
index b78b6b0fce66..b623520ad302 100644
--- a/Documentation/devicetree/bindings/perf/arm,dsu-pmu.yaml
+++ b/Documentation/devicetree/bindings/perf/arm,dsu-pmu.yaml
@@ -21,7 +21,11 @@ description:
 
 properties:
   compatible:
-    const: "arm,dsu-pmu"
+    oneof:
+      const: "arm,dsu-pmu"
+      items:
+        const: "arm,dsu-110-pmu"
+        const: "arm,dsu-pmu"
 
   interrupts:
     items:
@@ -30,7 +34,7 @@ properties:
   cpus:
     $ref: /schemas/types.yaml#/definitions/phandle-array
     minitems: 1
-    maxitems: 8
+    maxitems: 12
     description: List of phandles for the CPUs connected to this DSU instance.
 
 required:
-- 
2.28.0.dirty
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