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

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Message-ID: <20220926183535.GA2539544-robh@kernel.org>
Date:   Mon, 26 Sep 2022 13:35:35 -0500
From:   robh@...nel.org
To:     Jean-Philippe Brucker <jean-philippe@...aro.org>
Cc:     linux-kernel@...r.kernel.org, maz@...nel.org, robh+dt@...nel.org,
        mark.rutland@....com, devicetree@...r.kernel.org,
        krzysztof.kozlowski+dt@...aro.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 17:11:50 +0100, Jean-Philippe Brucker 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>
> ---
> v2: Reworked commit message, removed "obsolete" description
> v1: https://lore.kernel.org/all/20220916132959.1910374-1-jean-philippe@linaro.org/
> ---
>  .../devicetree/bindings/timer/arm,arch_timer.yaml     | 11 +++++------
>  1 file changed, 5 insertions(+), 6 deletions(-)
> 

Applied, thanks!