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From: Tomasz Figa <tomasz.figa-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
To: Yuvaraj Kumar C D <yuvaraj.cd-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>
Cc: linux-samsung-soc-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	kgene.kim-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
	devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	rob.herring-bsGFqQB8/DxBDgjK7y7TUQ@public.gmane.org,
	pawel.moll-5wv7dgnIgG8@public.gmane.org,
	mark.rutland-5wv7dgnIgG8@public.gmane.org,
	swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org,
	ian.campbell-Sxgqhf6Nn4DQT0dZR+AlfA@public.gmane.org,
	t.figa-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
	thomas.abraham-QSEj5FYQhm4dnm+yROfE0A@public.gmane.org,
	ks.giri-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org,
	Yuvaraj Kumar C D
	<yuvaraj.cd-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
Subject: Re: [PATCH] ARM: dts: Update arch timer node with clock frequency
Date: Sat, 21 Sep 2013 17:24:59 +0200	[thread overview]
Message-ID: <3887347.Oxs1qQnt5k@flatron> (raw)
In-Reply-To: <1379499113-20342-1-git-send-email-yuvaraj.cd-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>

Hi Yuvaraj,

On Wednesday 18 of September 2013 15:41:53 Yuvaraj Kumar C D wrote:
> Without the "clock-frequency" property in arch timer node, could able
> to see the below crash dump.
[snip]
> diff --git a/arch/arm/boot/dts/exynos5250.dtsi
> b/arch/arm/boot/dts/exynos5250.dtsi index 7d7cc77..668ce5d 100644
> --- a/arch/arm/boot/dts/exynos5250.dtsi
> +++ b/arch/arm/boot/dts/exynos5250.dtsi
> @@ -96,6 +96,7 @@
>  			     <1 14 0xf08>,
>  			     <1 11 0xf08>,
>  			     <1 10 0xf08>;
> +		clock-frequency = <24000000>;

Shouldn't it rather come from some clock provided by some clock controller 
instead?

The frequency would be then retrieved using clk_get_rate() on a clock 
received by clk_get(), specified in device tree using generic clock 
bindings.

Best regards,
Tomasz

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  parent reply	other threads:[~2013-09-21 15:24 UTC|newest]

Thread overview: 20+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2013-09-18 10:11 [PATCH] ARM: dts: Update arch timer node with clock frequency Yuvaraj Kumar C D
     [not found] ` <1379499113-20342-1-git-send-email-yuvaraj.cd-Sze3O3UU22JBDgjK7y7TUQ@public.gmane.org>
2013-09-18 10:23   ` Mark Rutland
2013-09-18 10:23     ` Mark Rutland
2013-09-20  4:57     ` Yuvaraj Kumar
2013-09-20  4:57       ` Yuvaraj Kumar
     [not found]       ` <CAKuRcOLfRwJohWMhc=QMew87SXtBmkPUJwW7UzNry_gFuC-81Q-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2013-09-20  8:17         ` Marc Zyngier
2013-09-20  8:17           ` Marc Zyngier
     [not found]           ` <523C048C.10303-5wv7dgnIgG8@public.gmane.org>
2013-09-20 14:55             ` Christopher Covington
2013-09-20 14:55               ` Christopher Covington
     [not found]               ` <523C61CB.2050607-sgV2jX0FEOL9JmXXK+q4OQ@public.gmane.org>
2013-09-20 15:04                 ` Marc Zyngier
2013-09-20 15:04                   ` Marc Zyngier
2013-09-21 15:24   ` Tomasz Figa [this message]
2013-09-23 14:15     ` Mark Rutland
2013-10-08 22:15       ` Olof Johansson
2013-10-09  8:25         ` Mark Rutland
2013-10-09 19:46           ` Olof Johansson
2013-10-09 21:51             ` Mark Rutland
2013-10-09 21:48         ` Rob Herring
2013-10-12 22:26           ` Olof Johansson
2013-10-12 22:31 ` Olof Johansson

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