linux-kernel - Re: [PATCH 3/9] clk: fractional-divider: add CLK_FRAC_DIVIDER_ZERO

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Message-ID: <20170620092611.GC6805@b29396-OptiPlex-7040>
Date:   Tue, 20 Jun 2017 17:26:11 +0800
From:   Dong Aisheng <dongas86@...il.com>
To:     Stephen Boyd <sboyd@...eaurora.org>
Cc:     Dong Aisheng <aisheng.dong@....com>, linux-clk@...r.kernel.org,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        mturquette@...libre.com, shawnguo@...nel.org, Anson.Huang@....com,
        ping.bai@....com
Subject: Re: [PATCH 3/9] clk: fractional-divider: add
 CLK_FRAC_DIVIDER_ZERO_BASED flag support

On Mon, Jun 19, 2017 at 06:55:47PM -0700, Stephen Boyd wrote:
> On 05/15, Dong Aisheng wrote:
> > diff --git a/include/linux/clk-provider.h b/include/linux/clk-provider.h
> > index a6efbb9..4466cae 100644
> > --- a/include/linux/clk-provider.h
> > +++ b/include/linux/clk-provider.h
> > @@ -557,6 +557,11 @@ void clk_hw_unregister_fixed_factor(struct clk_hw *hw);
> >   * @lock:	register lock
> >   *
> >   * Clock with adjustable fractional divider affecting its output frequency.
> > + *
> > + * Flags:
> > + * CLK_FRAC_DIVIDER_ZERO_BASED - by default the divisor is the value read
> > + *	from the register.  If CLK_FRAC_DIVIDER_ZERO_BASED is set then the
> > + *	divider is the raw value read from the register plus one.
> 
> This should say the numerator and denominator are both the value
> read plus one. It isn't clear if it applies to the numerator, or
> the denominator, or both.
> 

Good suggestion.
Will improve it.

Regards
Dong Aisheng

> >   */
> >  struct clk_fractional_divider {
> >  	struct clk_hw	hw;
> 
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