Messages in this thread | | | Date | Tue, 14 Jul 2015 09:19:00 -0500 | From | Nathan Lynch <> | Subject | Re: [PATCH v3 4/5] ARM: dts: mt8135: enable basic SMP bringup for mt8135 |
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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.
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