On Tue, Apr 21, 2015 at 3:22 PM, Rob Herring <robherring2@xxxxxxxxx> wrote:
> On Tue, Apr 21, 2015 at 1:51 PM, Zhi Li <lznuaa@xxxxxxxxx> wrote:
>> On Tue, Apr 21, 2015 at 12:31 PM, Mark Rutland <mark.rutland@xxxxxxx> wrote:
>>>> +static void __init imx_ca7_smp_init_cpus(void)
>>>> +{
>>>> + int i, ncores;
>>>> + unsigned long val;
>>>> +
>>>> + asm volatile("mrc p15, 1, %0, c9, c0, 2" : "=r" (val));
>>>> + ncores = ((val >> 24) & 0x3) + 1;
>>>> + if (setup_max_cpus < ncores)
>>>> + ncores = (setup_max_cpus) ? setup_max_cpus : 1;
>>>> +
>>>> + for (i = ncores; i < NR_CPUS; i++)
>>>> + set_cpu_possible(i, false);
>>>> +}
>>>
>>> NAK.
>>>
>>> The set of available CPUs should come from the DT, as with other
>>> platforms.
>>
>> Can you give me a reference platform implement?
>
> All of the ones with no smp_operations.
Okay, I just remove it.
>
> Rob
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