linux-kernel - Re: [PATCH v2 4/4] clk: Use ww_mutexes for clk_prepare

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Date:	Mon, 13 Oct 2014 11:23:22 +0300
From:	Peter De Schrijver <pdeschrijver@...dia.com>
To:	Stephen Boyd <sboyd@...eaurora.org>
CC:	Mike Turquette <mturquette@...aro.org>,
	<linux-kernel@...r.kernel.org>, <linux-arm-msm@...r.kernel.org>,
	<linux-arm-kernel@...ts.infradead.org>, <ccross@...roid.com>,
	Barry Song <baohua@...nel.org>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	Viresh Kumar <viresh.linux@...il.com>
Subject: Re: [PATCH v2 4/4] clk: Use ww_mutexes for clk_prepare_{lock/unlock}

On Fri, Oct 10, 2014 at 05:20:56PM -0700, Stephen Boyd wrote:
> On 10/10, Peter De Schrijver wrote:
> > > > drivers/clk/tegra/clk-pll.c:732:    unsigned long input_rate = 
> > > > clk_get_rate(clk_get_parent(hw->clk));
> > > > drivers/clk/tegra/clk-pll.c:1288:    unsigned long input_rate = 
> > > > clk_get_rate(clk_get_parent(hw->clk));
> > 
> > This is not so easy to change unfortunately. I will have to think of a solution.
> > 
> 
> Thanks. Does the input parent rate change at runtime or is it
> fixed at boot? I'm hoping we can call _get_table_rate() once
> before we register the clock or something.

It can change at runtime.

Cheers,

Peter.
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