linux-kernel - Re: [PATCH v2] dt-bindings: timer: arm,arch

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Date:   Sun, 25 Sep 2022 10:52:39 -0400
From:   Marc Zyngier <maz@...nel.org>
To:     Jean-Philippe Brucker <jean-philippe@...aro.org>
Cc:     mark.rutland@....com, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org,
        Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: Re: [PATCH v2] dt-bindings: timer: arm,arch_timer: Allow dual compatible string

On Thu, 22 Sep 2022 12:11:50 -0400,
Jean-Philippe Brucker <jean-philippe@...aro.org> wrote:
> 
> Since the Armv7 and Armv8 architected timers are compatible, it is valid
> to expose a devicetree node with compatible string "arm,armv8-timer"
> followed by "arm,armv7-timer". For example a 32-bit guest running on a
> 64-bit machine may look for the v7 string even though the hardware is v8.
> VMMs such as QEMU and kvmtool have been using this compatible string for
> some time. Clean up the compatible list a little and add the dual
> option.
> 
> Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
> Signed-off-by: Jean-Philippe Brucker <jean-philippe@...aro.org>

Acked-by: Marc Zyngier <maz@...nel.org>

	M.

-- 
Without deviation from the norm, progress is not possible.