linux-kernel - Re: [PATCHv2 6/8] ARM: EXYNOS: Enter a15 lowpower mode for Exynos3250 based on Cortex-a7

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Date:	Wed, 16 Apr 2014 23:39:32 +0900
From:	Chanwoo Choi <cwchoi00@...il.com>
To:	Tomasz Figa <t.figa@...sung.com>
Cc:	Chanwoo Choi <cw00.choi@...sung.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	ben-linux@...ff.org, Kukjin Kim <kgene.kim@...sung.com>,
	thomas.abraham@...aro.org,
	Kyungmin Park <kyungmin.park@...sung.com>,
	sw0312.kim@...sung.com, hyunhee.kim@...sung.com,
	yj44.cho@...sung.com, chanho61.park@...sung.com,
	Arnd Bergmann <arnd@...db.de>, Olof Johansson <olof@...om.net>,
	marc.zyngier@....com,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCHv2 6/8] ARM: EXYNOS: Enter a15 lowpower mode for Exynos3250
 based on Cortex-a7

Hi Tomasz,

On Wed, Apr 16, 2014 at 11:35 PM, Tomasz Figa <t.figa@...sung.com> wrote:
> Hi Chanwoo,
>
>
> On 15.04.2014 03:59, Chanwoo Choi wrote:
>>
>> This patch decide proper lowpower mode of either a15 or a9 according to
>> own ID
>> from Main ID register.
>>
>> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
>> Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
>> ---
>>   arch/arm/mach-exynos/hotplug.c | 16 +++++++++++-----
>>   1 file changed, 11 insertions(+), 5 deletions(-)
>>
>> diff --git a/arch/arm/mach-exynos/hotplug.c
>> b/arch/arm/mach-exynos/hotplug.c
>> index 5eead53..99e54e0 100644
>> --- a/arch/arm/mach-exynos/hotplug.c
>> +++ b/arch/arm/mach-exynos/hotplug.c
>> @@ -135,16 +135,22 @@ void __ref exynos_cpu_die(unsigned int cpu)
>>         int primary_part = 0;
>>
>>         /*
>> -        * we're ready for shutdown now, so do it.
>> -        * Exynos4 is A9 based while Exynos5 is A15; check the CPU part
>> +        * we're ready for shutdown now, so do it. Exynos4 is A9 based
>> +        * while Exynos5 is A15/Exynos3 is A7; check the CPU part
>>          * number by reading the Main ID register and then perform the
>>          * appropriate sequence for entering low power.
>
>
> If changing this comment anyway, I'd suggest removing particular SoC series
> from it and also correct writing style. My suggestion is:

OK, I'll fix it.

Best regards,
Chanwoo Choi

>
> /*
>  * Prepare the CPU for shutting down. The required sequence of
>  * operations depends on core type. CPUID part number can be used to
>  * determine the right way.
>  */
>
> Best regards,
> Tomasz
> --
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