linux-kernel - Re: [PATCH v3 01/20] PM / devfreq: exynos: Add generic exynos bus frequency driver

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Message-id: <566E6C39.6080703@samsung.com>
Date:	Mon, 14 Dec 2015 16:14:01 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Krzysztof Kozlowski <k.kozlowski@...sung.com>,
	myungjoo.ham@...sung.com, kgene@...nel.org
Cc:	kyungmin.park@...sung.com, robh+dt@...nel.org, pawel.moll@....com,
	mark.rutland@....com, ijc+devicetree@...lion.org.uk,
	galak@...eaurora.org, linux@....linux.org.uk,
	tjakobi@...h.uni-bielefeld.de, linux.amoon@...il.com,
	linux-kernel@...r.kernel.org, linux-pm@...r.kernel.org,
	linux-samsung-soc@...r.kernel.org, devicetree@...r.kernel.org
Subject: Re: [PATCH v3 01/20] PM / devfreq: exynos: Add generic exynos bus
 frequency driver

Hi Krzysztof and Myungjoo,

On 2015년 12월 11일 17:03, Krzysztof Kozlowski wrote:
> On 11.12.2015 16:52, Chanwoo Choi wrote:
>> Dear MyungJoo,
>>
>> Almost device tree patches in this series are reviewed by Exynos maintainer.
>> Could you please review this series?
> 
> Are there any objections to merging DT patches through Samsung-soc?
> 
> Looking at the code, there are no dependencies between DT and drivers,
> right?

Yes.
There is no dependency between exynos-bus.c patches and DT patches.
If the design concept of exynos-bus.c don't be changed,
there is no problem to merge the DT patches to samsung-soc tree.

Best Regards,
Chanwoo Choi

> 
> Best regards,
> Krzysztof
> 
>>
>> Best Regards,
>> Chanwoo Choi
>>
>> On 2015년 12월 11일 14:07, Chanwoo Choi wrote:
>>> This patch adds the generic exynos bus frequency driver for AMBA AXI bus
>>> of sub-blocks in exynos SoC with DEVFREQ framework. The Samsung Exynos SoC
>>> have the common architecture for bus between DRAM and sub-blocks in SoC.
>>> This driver can support the generic bus frequency driver for Exynos SoCs.
>>>
>>> In devicetree, Each bus block has a bus clock, regulator, operation-point
>>> and devfreq-event devices which measure the utilization of each bus block.
>>>
>>> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
>>> [linux.amoon: Tested on Odroid U3]
>>> Tested-by: Anand Moon <linux.amoon@...il.com>
>>> ---
>>>  drivers/devfreq/Kconfig             |  15 ++
>>>  drivers/devfreq/Makefile            |   1 +
>>>  drivers/devfreq/exynos/Makefile     |   1 +
>>>  drivers/devfreq/exynos/exynos-bus.c | 449 ++++++++++++++++++++++++++++++++++++
>>>  4 files changed, 466 insertions(+)
>>>  create mode 100644 drivers/devfreq/exynos/exynos-bus.c
> 
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