linux-kernel - Re: [PATCH 2/2] clk: exynos-audss: Update as per existing framework

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Date:	Fri, 11 Jul 2014 17:37:43 +0530
From:	Tushar Behera <trblinux@...il.com>
To:	Sylwester Nawrocki <s.nawrocki@...sung.com>,
	Tushar Behera <tushar.b@...sung.com>
CC:	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, linux-samsung-soc@...r.kernel.org,
	robh+dt@...nel.org, grant.likely@...aro.org, kgene.kim@...sung.com,
	mturquette@...aro.org, t.figa@...sung.com
Subject: Re: [PATCH 2/2] clk: exynos-audss: Update as per existing framework

On 07/11/2014 04:10 PM, Sylwester Nawrocki wrote:
> Hi Tushar,
> 
> On 11/07/14 11:37, Tushar Behera wrote:
>> Change exynos-audss clock driver as per existing clock framework from
>> the existing module driver framework.
> 
> Can you explain what's the actual issue you're trying to solve with that
> patch ? What's the problem with this driver being a platform driver ?
> It feels we're moving in circles here, see
> 
> commit b37a4224104568198b93fb9831224cfe7d83fff8
> Author: Andrew Bresticker <abrestic@...omium.org>
> Date:   Wed Sep 25 14:12:47 2013 -0700
> 
>     clk: exynos-audss: convert to platform device
> 
>     The Exynos AudioSS clock controller will later be modified to allow
>     input clocks to be specified via device-tree in order to support
>     multiple Exynos SoCs.  This will introduce a dependency on the core
>     SoC clock controller being initialized first so that the AudioSS driver
>     can look up its input clocks, but the order in which clock providers
>     are probed in of_clk_init() is not guaranteed.  Since deferred probing
>     is not supported in of_clk_init() and the AudioSS block is not the core
>     controller, we can initialize it later as a platform device.
> 
>     Signed-off-by: Andrew Bresticker <abrestic@...omium.org>
>     Acked-by: Tomasz Figa <t.figa@...sung.com>
>     Reviewed-by: Sylwester Nawrocki <s.nawrocki@...sung.com>
>     Acked-by: Mike Turquette <mturquette@...aro.org>
>     Acked-by: Kukjin Kim <kgene.kim@...sung.com>
>     Signed-off-by: Tomasz Figa <t.figa@...sung.com>
> 
> I realize of_clk_init() now handles better clock provider dependencies,
> nevertheless do we really need all this churn ?
> 

I have sent v2 of the patchset while retaining the platform driver
infrastructure. Awaiting your review comments on that.

> --
> Thanks,
> Sylwester
> 

Thanks,
-- 
Tushar Behera
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