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Re: [PATCH v7 2/8] ARM64: add SBSA Generic Watchdog device node in foundation-v8.dts

From Dave Young <dyoung@redhat.com>
Newsgroups linux.kernel
Subject Re: [PATCH v7 2/8] ARM64: add SBSA Generic Watchdog device node in foundation-v8.dts
Date 2015-09-15 10:50 +0200
Message-ID <q8U66-86T-19@gated-at.bofh.it> (permalink)
References <pqlF8-659-23@gated-at.bofh.it> <q13pU-5xE-5@gated-at.bofh.it> <q13pW-5xE-47@gated-at.bofh.it>
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On 08/25/15 at 01:01am, fu.wei@linaro.org wrote:
> From: Fu Wei <fu.wei@linaro.org>
> 
> This can be a example of adding SBSA Generic Watchdog device node
> into some dts files for the Soc which contains SBSA Generic Watchdog.
> 
> Acked-by: Arnd Bergmann <arnd@arndb.de>
> Signed-off-by: Fu Wei <fu.wei@linaro.org>
> ---
>  arch/arm64/boot/dts/arm/foundation-v8.dts | 7 +++++++
>  1 file changed, 7 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/arm/foundation-v8.dts b/arch/arm64/boot/dts/arm/foundation-v8.dts
> index 4eac8dc..824431f 100644
> --- a/arch/arm64/boot/dts/arm/foundation-v8.dts
> +++ b/arch/arm64/boot/dts/arm/foundation-v8.dts
> @@ -237,4 +237,11 @@
>  			};
>  		};
>  	};
> +	watchdog@2a440000 {
> +		compatible = "arm,sbsa-gwdt";
> +		reg = <0x0 0x2a440000 0 0x1000>,
> +			<0x0 0x2a450000 0 0x1000>;
> +		interrupts = <0 27 4>;
> +		timeout-sec = <10 5>;

I assume 10 is timeout, 5 is pre timeout, but in the driver code the default
value is 30/10, I think the example dts[i] should use same default values as in code.

BTW, for kdump kernel Pratyush is working on kdump on wdt enabled system. 
Basiclly we expect one configure longer timeout, and kick it in shorter
period so we can get a chance to save vmcore. 10s sounds too short for the case..

> +	};
>  };
> -- 
> 2.4.3
> 
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Re: [PATCH v7 2/8] ARM64: add SBSA Generic Watchdog device node in  foundation-v8.dts Dave Young <dyoung@redhat.com> - 2015-09-15 10:50 +0200
  Re: [PATCH v7 2/8] ARM64: add SBSA Generic Watchdog device node in  foundation-v8.dts Pratyush Anand <panand@redhat.com> - 2015-09-15 11:50 +0200
    Re: [PATCH v7 2/8] ARM64: add SBSA Generic Watchdog device node in foundation-v8.dts Fu Wei <fu.wei@linaro.org> - 2015-09-15 12:30 +0200
  Re: [PATCH v7 2/8] ARM64: add SBSA Generic Watchdog device node in foundation-v8.dts Fu Wei <fu.wei@linaro.org> - 2015-09-15 12:20 +0200

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