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Message-Id: <20230214-apple_m2_pmu-v1-1-9c9213ab9b63@jannau.net>
Date:   Tue, 14 Feb 2023 11:38:01 +0100
From:   Janne Grunau <j@...nau.net>
To:     Will Deacon <will@...nel.org>, Mark Rutland <mark.rutland@....com>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>
Cc:     asahi@...ts.linux.dev, linux-arm-kernel@...ts.infradead.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH 1/2] dt-bindings: arm-pmu: Add PMU compatible strings for
 Apple M2 cores

The PMUs on the Apple M2 cores avalanche and blizzard CPU are compatible
with M1 ones. As on M1 we don't know exactly what the counters count so
use a distinct compatible for each micro-architecture.
Apple's PMU counter description omits a counter for M2 so there
is some variation on the interpretation of the counters.

Signed-off-by: Janne Grunau <j@...nau.net>
---
 Documentation/devicetree/bindings/arm/pmu.yaml | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/arm/pmu.yaml b/Documentation/devicetree/bindings/arm/pmu.yaml
index dbb6f3dc5ae5..e14358bf0b9c 100644
--- a/Documentation/devicetree/bindings/arm/pmu.yaml
+++ b/Documentation/devicetree/bindings/arm/pmu.yaml
@@ -20,6 +20,8 @@ properties:
     items:
       - enum:
           - apm,potenza-pmu
+          - apple,avalanche-pmu
+          - apple,blizzard-pmu
           - apple,firestorm-pmu
           - apple,icestorm-pmu
           - arm,armv8-pmuv3 # Only for s/w models

-- 
2.39.1

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