[v1] perf/arm-cmn: Fixes and updates

[PATCH 7/8] dt-bindings: perf: arm-cmn: Add CMN S3

Posted by Robin Murphy 1 year, 6 months ago

The CMN S3 PMU is functionally still very similar to CMN-700, however
while the register contents are compatible, many of them are moved to
different offsets. While this is technically discoverable by a careful
driver that understands the part number in the peripheral ID registers
(which do at least remain in the same place), a new unique compatible
seems warranted to avoid any surprises.

CC: <devicetree@vger.kernel.org>
Signed-off-by: Robin Murphy <robin.murphy@arm.com>
---
 Documentation/devicetree/bindings/perf/arm,cmn.yaml | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/perf/arm,cmn.yaml b/Documentation/devicetree/bindings/perf/arm,cmn.yaml
index 2e51072e794a..0e9d665584e6 100644
--- a/Documentation/devicetree/bindings/perf/arm,cmn.yaml
+++ b/Documentation/devicetree/bindings/perf/arm,cmn.yaml
@@ -16,6 +16,7 @@ properties:
       - arm,cmn-600
       - arm,cmn-650
       - arm,cmn-700
+      - arm,cmn-s3
       - arm,ci-700
 
   reg:
-- 
2.39.2.101.g768bb238c484.dirty

Re: [PATCH 7/8] dt-bindings: perf: arm-cmn: Add CMN S3

Posted by Rob Herring (Arm) 1 year, 5 months ago

On Fri, 09 Aug 2024 20:15:46 +0100, Robin Murphy wrote:
> The CMN S3 PMU is functionally still very similar to CMN-700, however
> while the register contents are compatible, many of them are moved to
> different offsets. While this is technically discoverable by a careful
> driver that understands the part number in the peripheral ID registers
> (which do at least remain in the same place), a new unique compatible
> seems warranted to avoid any surprises.
> 
> CC: <devicetree@vger.kernel.org>
> Signed-off-by: Robin Murphy <robin.murphy@arm.com>
> ---
>  Documentation/devicetree/bindings/perf/arm,cmn.yaml | 1 +
>  1 file changed, 1 insertion(+)
> 

Acked-by: Rob Herring (Arm) <robh@kernel.org>