From mboxrd@z Thu Jan  1 00:00:00 1970
From: Mark Rutland <mark.rutland@arm.com>
Subject: Re: [PATCH v3 3/5] arm64: dts: Add support for Spreadtrum SC9836 SoC
 in dts and Makefile
Date: Fri, 28 Nov 2014 16:40:47 +0000
Message-ID: <20141128164047.GL25883@leverpostej>
References: <Sharkl64-v3>
 <1416917818-10506-1-git-send-email-chunyan.zhang@spreadtrum.com>
 <1416917818-10506-4-git-send-email-chunyan.zhang@spreadtrum.com>
 <20141127115042.GE857@leverpostej>
 <20141127121214.GF11511@e104818-lin.cambridge.arm.com>
 <20141127134309.GJ857@leverpostej>
 <20141128142913.GB5393@localhost>
 <20141128143532.GI25883@leverpostej>
 <20141128144412.GG7144@arm.com>
 <20141128150325.GC24370@e104818-lin.cambridge.arm.com>
Mime-Version: 1.0
Content-Type: text/plain; charset="us-ascii"
Content-Transfer-Encoding: 7bit
Return-path: <linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org>
Content-Disposition: inline
In-Reply-To: <20141128150325.GC24370@e104818-lin.cambridge.arm.com>
List-Unsubscribe: <http://lists.infradead.org/mailman/options/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=unsubscribe>
List-Archive: <http://lists.infradead.org/pipermail/linux-arm-kernel/>
List-Post: <mailto:linux-arm-kernel@lists.infradead.org>
List-Help: <mailto:linux-arm-kernel-request@lists.infradead.org?subject=help>
List-Subscribe: <http://lists.infradead.org/mailman/listinfo/linux-arm-kernel>,
 <mailto:linux-arm-kernel-request@lists.infradead.org?subject=subscribe>
Sender: "linux-arm-kernel" <linux-arm-kernel-bounces@lists.infradead.org>
Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=m.gmane.org@lists.infradead.org
To: Catalin Marinas <catalin.marinas@arm.com>
Cc: "andrew@lunn.ch" <andrew@lunn.ch>, "heiko@sntech.de" <heiko@sntech.de>, "gnomes@lxorguk.ukuu.org.uk" <gnomes@lxorguk.ukuu.org.uk>, Will Deacon <Will.Deacon@arm.com>, Chunyan Zhang <chunyan.zhang@spreadtrum.com>, "jason@lakedaemon.net" <jason@lakedaemon.net>, "lanqing.liu@spreadtrum.com" <lanqing.liu@spreadtrum.com>, "arnd@arndb.de" <arnd@arndb.de>, "corbet@lwn.net" <corbet@lwn.net>, "zhang.lyra@gmail.com" <zhang.lyra@gmail.com>, "zhizhou.zhang@spreadtrum.com" <zhizhou.zhang@spreadtrum.com>, "geng.ren@spreadtrum.com" <geng.ren@spreadtrum.com>, "m-karicheri2@ti.com" <m-karicheri2@ti.com>, "linux-arm-kernel@lists.infradead.org" <linux-arm-kernel@lists.infradead.org>, "linux-serial@vger.kernel.org" <linux-serial@vger.kernel.org>, "grant.likely@linaro.org" <grant.likely@linaro.org>, "orsonzhai@gmail.com" <orsonzhai@gmail.com>, "florian.vaussard@epfl.ch" <florian.vaussard@ep>
List-Id: linux-api@vger.kernel.org

[...]

> 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