Re: [PATCH v3 4/5] ARM: dts: mt8135: enable basic SMP bringup for mt8135

From	Yingjoe Chen <yingjoe.chen@mediatek.com>
Newsgroups	linux.kernel
Subject	Re: [PATCH v3 4/5] ARM: dts: mt8135: enable basic SMP bringup for mt8135
Date	2015-07-16 16:50 +0200
Message-ID	<pMSE1-1eX-1@gated-at.bofh.it> (permalink)
References	<pM0Nk-6x5-7@gated-at.bofh.it> <pM0X0-6Aa-9@gated-at.bofh.it> <pM9dU-3dh-15@gated-at.bofh.it>
Organization	linux.* mail to news gateway

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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


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[PATCH v3 0/5] Add SMP bringup support for mt65xx socs Yingjoe Chen <yingjoe.chen@mediatek.com> - 2015-07-14 07:20 +0200
  [PATCH v3 3/5] ARM: mediatek: add smp bringup code Yingjoe Chen <yingjoe.chen@mediatek.com> - 2015-07-14 07:20 +0200
  [PATCH v3 1/5] ARM: mediatek: enable gpt6 on boot up to make arch timer working Yingjoe Chen <yingjoe.chen@mediatek.com> - 2015-07-14 07:20 +0200
  [PATCH v3 2/5] devicetree: bindings: add new SMP enable method Mediatek SoC Yingjoe Chen <yingjoe.chen@mediatek.com> - 2015-07-14 07:30 +0200
  [PATCH v3 4/5] ARM: dts: mt8135: enable basic SMP bringup for mt8135 Yingjoe Chen <yingjoe.chen@mediatek.com> - 2015-07-14 07:30 +0200
    Re: [PATCH v3 4/5] ARM: dts: mt8135: enable basic SMP bringup for  mt8135 Yingjoe Chen <yingjoe.chen@mediatek.com> - 2015-07-16 16:50 +0200

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