linux-kernel - Re: [PATCH 1/2] dt-bindings: arm-pmu: Add PMU compatible strings for Apple M2 cores

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Date:   Wed, 15 Feb 2023 14:46:13 -0600
From:   Rob Herring <robh@...nel.org>
To:     Janne Grunau <j@...nau.net>
Cc:     devicetree@...r.kernel.org, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Mark Rutland <mark.rutland@....com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        asahi@...ts.linux.dev, Will Deacon <will@...nel.org>
Subject: Re: [PATCH 1/2] dt-bindings: arm-pmu: Add PMU compatible strings for
 Apple M2 cores


On Tue, 14 Feb 2023 11:38:01 +0100, Janne Grunau wrote:
> 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(+)
> 

Acked-by: Rob Herring <robh@...nel.org>