[PATCH 14/25] OMAP4: PM: Add CPUX OFF mode support

Shilimkar, Santosh santosh.shilimkar at ti.com
Wed Sep 14 01:26:36 EDT 2011


On Tue, Sep 13, 2011 at 11:03 PM, Kevin Hilman <khilman at ti.com> wrote:
> Santosh <santosh.shilimkar at ti.com> writes:
>
>> On Tuesday 13 September 2011 02:36 AM, Kevin Hilman wrote:
>>> Santosh Shilimkar<santosh.shilimkar at ti.com>  writes:
>>>
>>>> This patch adds the CPU0 and CPU1 off mode support. CPUX close switch
>>>> retention (CSWR) is not supported by hardware design.
>>>>
>>>> The CPUx OFF mode isn't supported on OMAP4430 ES1.0
>>>>
>>>> CPUx sleep code is common for hotplug, suspend and CPUilde.
>>>>
>>>> Signed-off-by: Santosh Shilimkar<santosh.shilimkar at ti.com>
>>>> Cc: Kevin Hilman<khilman at ti.com>
>>>
>>> [...]
>>>
>>>> @@ -38,6 +39,11 @@ void __iomem *omap4_get_scu_base(void)
>>>>
>>>>   void __cpuinit platform_secondary_init(unsigned int cpu)
>>>>   {
>>>> +   /* Enable NS access to SMP bit for this CPU on EMU/HS devices */
>>>> +   if (cpu_is_omap443x()&&  (omap_type() != OMAP2_DEVICE_TYPE_GP))
>>>
>>> A comment here about why this is 443x specific would be helpful.
>>>
>>> I see a comment in omap4_cpu_resume() that seems to indicate that SMP
>>> bit is accessible on 446x NS devices, but repeating that commen here
>>> would help future readability.
>>>
>> Ok. Will add comments here too. Was just trying to save some lines :)
>
> heh, this is a negative side-effect of people caring primarily about
> diffstat. :(
>
ya.

> One other comment on this patch.  You need spaces around the '&&' above.
>
The original patch is fine for that. Some replies has eaten that space. My
Thunderbird email client is doing the same. :(

Regards
Santosh



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