linux-kernel - Re: [PATCH] clk: Register clkdev after setup of fixed-rate and fixed-factor clocks

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Message-ID: <20161203054600.GA8463@spreadtrum.com>
Date:   Sat, 3 Dec 2016 13:46:00 +0800
From:   Xiaolong Zhang <xiaolong.zhang@...eadtrum.com>
To:     Stephen Boyd <sboyd@...eaurora.org>
CC:     <mturquette@...libre.com>, <orson.zhai@...eadtrum.com>,
        <ben.li@...eadtrum.com>, <baolin.wang@...eadtrum.com>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH] clk: Register clkdev after setup of fixed-rate and
 fixed-factor clocks

On 二, 11月 29, 2016 at 01:10:54下午 -0800, Stephen Boyd wrote:
> On 11/24, Xiaolong Zhang wrote:
> > On 三, 11月 23, 2016 at 04:38:33下午 -0800, Stephen Boyd wrote:
> > 
> > > We're really off track now though. Can you please point to some
> > > code that needs this change? If we're using DT then we should be
> > > able to use the of_clk_*() path to find the clk.
> > >
> > 
> > Actually, the requirement is raised by our GPU driver. In the
> > early stage of the GPU DT driver, the GPU driver use the
> > clk_get(NULL, con_id) to get the clock instance for compatible
> > with non-DT GPU driver. The new driver have used the of_clk_get()
> > instead of the clk_get. And we reserved the modification in clock.
> > 
> 
> Ok the non-DT version of the GPU driver should be modified to
> call clk_get() and pass in the device. The con_id argument there
> should be something specific to the GPU device, and not a global
> name of a clock on the system. When the clkdev lookup is
> populated on the non-DT board make sure to set the dev_id string
> to match the device name of the GPU device.
>
Ok, Thanks sBoyd!
>
> -- 
> Qualcomm Innovation Center, Inc. is a member of Code Aurora Forum,
> a Linux Foundation Collaborative Project