linux-kernel - Re: [PATCH v2 6/6] arm64: tegra: Enable native timers on Tegra234

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Message-ID: <e2fa90b6-3a12-7d6e-26c0-65f0e1e603a3@nvidia.com>
Date:   Thu, 30 Jun 2022 10:38:57 +0100
From:   Jon Hunter <jonathanh@...dia.com>
To:     Kartik <kkartik@...dia.com>, daniel.lezcano@...aro.org,
        tglx@...utronix.de, robh+dt@...nel.org, krzk+dt@...nel.org,
        thierry.reding@...il.com, spujar@...dia.com,
        akhilrajeev@...dia.com, rgumasta@...dia.com, pshete@...dia.com,
        vidyas@...dia.com, mperttunen@...dia.com, mkumard@...dia.com,
        linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-tegra@...r.kernel.org
Subject: Re: [PATCH v2 6/6] arm64: tegra: Enable native timers on Tegra234



On 29/06/2022 19:29, Kartik wrote:
> The native timers IP block found on NVIDIA Tegra SoCs implements a
> watchdog timer that can be used to recover from system hangs. Add and
> enable the device tree node on Tegra234.
> 
> Signed-off-by: Kartik <kkartik@...dia.com>
> ---
>   arch/arm64/boot/dts/nvidia/tegra234.dtsi | 22 ++++++++++++++++++++++
>   1 file changed, 22 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/nvidia/tegra234.dtsi b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
> index cf611eff7f6b..aa8ceb3c329b 100644
> --- a/arch/arm64/boot/dts/nvidia/tegra234.dtsi
> +++ b/arch/arm64/boot/dts/nvidia/tegra234.dtsi
> @@ -519,6 +519,28 @@
>   			status = "okay";
>   		};
>   
> +		timer@...0000 {
> +			compatible = "nvidia,tegra234-timer";
> +			reg = <0x02080000 0x00121000>;
> +			interrupts = <GIC_SPI 0 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 1 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 2 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 3 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 4 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 5 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 6 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 7 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 8 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 9 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 10 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 11 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 12 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 13 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 14 IRQ_TYPE_LEVEL_HIGH>,
> +				     <GIC_SPI 15 IRQ_TYPE_LEVEL_HIGH>;
> +			status = "okay";
> +		};
> +
>   		gpio: gpio@...0000 {
>   			compatible = "nvidia,tegra234-gpio";
>   			reg-names = "security", "gpio";


Reviewed-by: Jon Hunter <jonathanh@...dia.com>

Thanks!
Jon

-- 
nvpublic