linux-kernel - Re: [PATCHv2 3/8] ARM: EXYNOS: Add IO mapping for PMU of Exynos3250

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Date:	Tue, 15 Apr 2014 14:09:24 +0530
From:	Vikas Sajjan <sajjan.linux@...il.com>
To:	Chanwoo Choi <cw00.choi@...sung.com>
Cc:	Arnd Bergmann <arnd@...db.de>, linux-kernel@...r.kernel.org,
	linux@....linux.org.uk, ben-linux@...ff.org,
	Kukjin Kim <kgene.kim@...sung.com>,
	Tomasz Figa <t.figa@...sung.com>,
	Thomas Abraham <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,
	Olof Johansson <olof@...om.net>, marc.zyngier@....com,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	"linux-arm-kernel@...ts.infradead.org" 
	<linux-arm-kernel@...ts.infradead.org>, devicetree@...r.kernel.org
Subject: Re: [PATCHv2 3/8] ARM: EXYNOS: Add IO mapping for PMU of Exynos3250

Hi,

On Tue, Apr 15, 2014 at 2:02 PM, Chanwoo Choi <cw00.choi@...sung.com> wrote:
> Hi,
>
> On 04/15/2014 05:11 PM, Arnd Bergmann wrote:
>> On Tuesday 15 April 2014 10:59:47 Chanwoo Choi wrote:
>>> This patch add memory mapping for PMU (Power Management Unit) which is used
>>> for power control of Exynos3250.
>>>
>>> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
>>> Acked-by: Kyungmin Park <kyungmin.park@...sung.com>
>>> ---
>>> Arnd Bergmann suggested that need proper driver instead of static memory mapping.
>>> As Chanho Park reply[2], Sachin Kamat already posted the DT support patch[1]
>>> for memory mapping for SYSRAM.
>>> [1] http://www.spinics.net/lists/linux-samsung-soc/msg27647.html
>>> [2] https://lkml.org/lkml/2014/4/10/161
>>>
>>> So, I'm going to re-implement following patch related to static memory mapping
>>> after merged Sachin Kamat patch[1].
>>>   ARM: EXYNOS: Add IO mapping for PMU of Exynos3250
>>
>> I don't think we have a patch for the PMU yet, Sachin was looking at the SYSRAM
>> only.
>
> You are right. Sachin's patch only included the solution of SYSRAM memory mapping.
> I set out the plan that I would implment proper driver for PMU memory mapping
> instead of static method after merged Sachin's patch for SYSRAM.
>
> But,
> If you'd like me to implment PMU memory mapping instead of static mapping right now,
> I'll implement it for PMU such as Sachin's patch on next posting(v3).
>

I have already posted patch[1] for mapping PMU through DT as part of
my PMU series for exynos5260.
You can rebase on the same.


[1] http://www.spinics.net/lists/arm-kernel/msg316013.html


> Thanks for your review.
>
> Best Regards,
> Chanwoo Choi
>
>
> --
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