linux-kernel - Re: possibility of parent clock selection through DT

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Message-ID: <CAPub148Bq=uwTuky25WzXn4yfCukJ+WacxkBvuyV5yTzGasGOQ@mail.gmail.com>
Date:	Wed, 7 Nov 2012 12:06:10 +0530
From:	Shiraz Hashim <shiraz.linux.kernel@...il.com>
To:	Mike Turquette <mturquette@...com>,
	Rob Herring <rob.herring@...xeda.com>
Cc:	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	Viresh Kumar <viresh.kumar@...aro.org>,
	devicetree-discuss@...ts.ozlabs.org
Subject: Re: possibility of parent clock selection through DT

On Wed, Nov 7, 2012 at 11:42 AM, Shiraz Hashim
<shiraz.linux.kernel@...il.com> wrote:
> Hi Mike, Rob,
>
> Devices in a SoC can have multiple possible clock sources which is
> perfectly captured through clk framework.
>
> But the device itself may not be aware of the complex hierarchy above it.
> In this case how do you suggest a board (through DT) should select its
> preference.
>
> Is there some work already going on in this direction ?

Just to make it clear, I already have referred the clock DT bindings and
Shawn Guo patch on removing clk look up registration from kernel code.

Here I am talking about possibility of selecting desired clock hierarchy
by the boards about which device nodes are not aware.

-- 
regards
Shiraz Hashim
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