linux-kernel - Re: [PATCH 5/7] clk: samsung: exynos542x: Add the clock id for ACLK

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Date:	Thu, 14 Apr 2016 15:28:17 +0900
From:	Chanwoo Choi <cw00.choi@...sung.com>
To:	Tomasz Figa <tomasz.figa@...il.com>,
	Krzysztof Kozlowski <k.kozlowski@...sung.com>
Cc:	MyungJoo Ham <myungjoo.ham@...sung.com>,
	Kyungmin Park <kyungmin.park@...sung.com>,
	Kukjin Kim <kgene@...nel.org>,
	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	Kumar Gala <galak@...eaurora.org>,
	Russell King <linux@....linux.org.uk>, linux.amoon@...il.com,
	m.reichl@...etechno.de,
	Tobias Jakobi <tjakobi@...h.uni-bielefeld.de>,
	InKi Dae <inki.dae@...sung.com>,
	linux-kernel <linux-kernel@...r.kernel.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"linux-samsung-soc@...r.kernel.org" 
	<linux-samsung-soc@...r.kernel.org>,
	linux-arm-kernel <linux-arm-kernel@...ts.infradead.org>,
	devicetree <devicetree@...r.kernel.org>
Subject: Re: [PATCH 5/7] clk: samsung: exynos542x: Add the clock id for ACLK

Hi Tomasz and Krzysztof,

On 2016년 04월 13일 15:20, Tomasz Figa wrote:
> 2016-04-12 14:25 GMT+03:00 Krzysztof Kozlowski <k.kozlowski@...sung.com>:
>> On 04/08/2016 07:00 AM, Chanwoo Choi wrote:
>>> This patch adds the clock id for ACLK clock which is source clock of AMBA AXI
>>> Bus. This clock should be handled in Bus frequency scaling driver.
>>>
>>> Signed-off-by: Chanwoo Choi <cw00.choi@...sung.com>
>>> ---
>>>  drivers/clk/samsung/clk-exynos5420.c | 85 +++++++++++++++++++++++-------------
>>>  1 file changed, 55 insertions(+), 30 deletions(-)
>>
>> The IDs itself look good but you are not adding only clock ID. You are
>> changing all of them from NULL-flags to CLK_SET_RATE_PARENT. This should
>> be explained in the commit message why you need it. Probably it should
>> be also in separate commit.
> 
> +1. And CLK_SET_RATE_PARENT for a clock which has a mux as its parent
> is a bit suspicious, so I'd like to know the rationale for each single
> clock with CLK_SET_RATE_PARENT being added.

This patch don't need the CLK_SET_RATE_PARENT flag. As Tomasz's comment,
the mux of divider's parent don't need this flag. Sorry for confusion.

I'll drop the CLK_SET_RATE_PARENT flag.

Best Regards,
Chanwoo Choi