linux-kernel - Re: [PATCH v3 3/5] arm64: dts: Add support for Spreadtrum SC9836 SoC in dts and Makefile

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Message-ID: <20141128164047.GL25883@leverpostej>
Date:	Fri, 28 Nov 2014 16:40:47 +0000
From:	Mark Rutland <mark.rutland@....com>
To:	Catalin Marinas <catalin.marinas@....com>
Cc:	Will Deacon <Will.Deacon@....com>,
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Subject: Re: [PATCH v3 3/5] arm64: dts: Add support for Spreadtrum SC9836 SoC
 in dts and Makefile

[...]

> In the meantime I think we can be more tolerant:
> 
> diff --git a/drivers/clocksource/arm_arch_timer.c b/drivers/clocksource/arm_arch_timer.c
> index 2133f9d59d06..87f67a93fcc7 100644
> --- a/drivers/clocksource/arm_arch_timer.c
> +++ b/drivers/clocksource/arm_arch_timer.c
> @@ -376,6 +376,8 @@ arch_timer_detect_rate(void __iomem *cntbase, struct device_node *np)
>  			arch_timer_rate = readl_relaxed(cntbase + CNTFRQ);
>  		else
>  			arch_timer_rate = arch_timer_get_cntfrq();
> +	} else if (IS_ENABLED(CONFIG_ARM64)) {
> +		pr_warn("Architected timer frequency overridden by DT (broken firmware?)\n");
>  	}

That looks good to me. On a related note, it looks like my documentation
patch [1] from a while back fell by the wayside. Does anyone fancy
picking that up to go with this?

Mark.

[1] http://lists.infradead.org/pipermail/linux-arm-kernel/2014-August/282830.html
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