linux-kernel - Re: [PATCH v3 5/7] arm64: tegra: Enable native timers on Jetson TX2

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Date:   Sat, 4 Apr 2020 00:11:53 +0300
From:   Dmitry Osipenko <digetx@...il.com>
To:     Thierry Reding <thierry.reding@...il.com>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Thomas Gleixner <tglx@...utronix.de>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Jon Hunter <jonathanh@...dia.com>, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 5/7] arm64: tegra: Enable native timers on Jetson TX2

03.04.2020 23:22, Thierry Reding пишет:
> From: Thierry Reding <treding@...dia.com>
> 
> Enable the native timers on Jetson TX2 to allow using the watchdog
> functionality to recover from system hangs, for example.
> 
> Signed-off-by: Thierry Reding <treding@...dia.com>
> ---
>  arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi | 4 ++++
>  1 file changed, 4 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi
> index da96de04d003..9aa17744c4a0 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra186-p3310.dtsi
> @@ -58,6 +58,10 @@ memory-controller@...0000 {
>  		status = "okay";
>  	};
>  
> +	timer@...0000 {
> +		status = "okay";
> +	};

Why timer needs to be enabled per-board?