linux-kernel - Re: [PATCH v4 3/4] clk: Hi6220: add stub clock driver

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Message-ID: <20150812083336.GC13623@codeaurora.org>
Date:	Wed, 12 Aug 2015 01:33:36 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Leo Yan <leo.yan@...aro.org>
Cc:	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>,
	Catalin Marinas <catalin.marinas@....com>,
	Will Deacon <will.deacon@....com>,
	Michael Turquette <mturquette@...libre.com>,
	Wei Xu <xuwei5@...ilicon.com>,
	Haojian Zhuang <haojian.zhuang@...aro.org>,
	Bintian Wang <bintian.wang@...wei.com>,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org, linux-clk@...r.kernel.org,
	Guodong Xu <guodong.xu@...aro.org>,
	Jian Zhang <zhangjian001@...ilicon.com>,
	Zhenwei Wang <Zhenwei.wang@...ilicon.com>,
	Haoju Mo <mohaoju@...ilicon.com>,
	Dan Zhao <dan.zhao@...ilicon.com>, sunzhaosheng@...ilicon.com,
	victor.lixin@...ilicon.com
Subject: Re: [PATCH v4 3/4] clk: Hi6220: add stub clock driver

On 08/04, Leo Yan wrote:
> On Hi6220, there have some clocks which can use mailbox channel to send
> messages to power controller to change frequency; this includes CPU, GPU
> and DDR clocks.
> 
> For dynamic frequency scaling, firstly need write the frequency value to
> SRAM region, and then send message to mailbox to trigger power controller
> to handle this requirement. This driver will use syscon APIs to pass SRAM
> memory region and use common mailbox APIs for channels accessing.
> 
> This init driver will support cpu frequency change firstly.
> 
> Signed-off-by: Leo Yan <leo.yan@...aro.org>
> ---

Applied to clk-next

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