From mboxrd@z Thu Jan  1 00:00:00 1970
From: Yingjoe Chen <yingjoe.chen@mediatek.com>
Subject: Re: [PATCH v3 4/5] ARM: dts: mt8135: enable basic SMP bringup for
 mt8135
Date: Thu, 16 Jul 2015 22:44:11 +0800
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To: Nathan Lynch <Nathan_Lynch@mentor.com>
Cc: Matthias Brugger <matthias.bgg@gmail.com>, devicetree@vger.kernel.org, Russell King <linux@arm.linux.org.uk>, srv_heupstream@mediatek.com, Arnd Bergmann <arnd@arndb.de>, Stephen Boyd <sboyd@codeaurora.org>, linux-kernel@vger.kernel.org, Rob Herring <robh+dt@kernel.org>, linux-mediatek@lists.infradead.org, Sascha Hauer <kernel@pengutronix.de>, Olof Johansson <olof@lixom.net>, linux-arm-kernel@lists.infradead.org
List-Id: devicetree@vger.kernel.org

On Tue, 2015-07-14 at 09:19 -0500, Nathan Lynch wrote:
> On 07/14/2015 12:18 AM, Yingjoe Chen wrote:
> > Add arch timer node to enable arch-timer support. MT8135 firmware
> > doesn't correctly setup arch-timer frequency and CNTVOFF, add
> > properties to workaround this.
> 
> [...]
> 
> >  
> > +	timer {
> > +		compatible = "arm,armv7-timer";
> > +		interrupt-parent = <&gic>;
> > +		interrupts = <GIC_PPI 13 (GIC_CPU_MASK_SIMPLE(4) |
> > +					  IRQ_TYPE_LEVEL_LOW)>,
> > +			     <GIC_PPI 14 (GIC_CPU_MASK_SIMPLE(4) |
> > +					  IRQ_TYPE_LEVEL_LOW)>,
> > +			     <GIC_PPI 11 (GIC_CPU_MASK_SIMPLE(4) |
> > +					  IRQ_TYPE_LEVEL_LOW)>,
> > +			     <GIC_PPI 10 (GIC_CPU_MASK_SIMPLE(4) |
> > +					  IRQ_TYPE_LEVEL_LOW)>;
> > +		clock-frequency = <13000000>;
> > +		arm,cpu-registers-not-fw-configured;
> 
> It's disappointing to see this property in new DTS submissions.  It
> prevents taking advantage of the VDSO for gettimeofday/clock_gettime.
> 

Hi,

I know. But unfortunately this is a more then 1 year SoC, so I can't do
anything to change this :(

Joe.C