linux-kernel - Re: [PATCH v3] OMAP2/3: clock: fix fint calculation for DPLL

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Date:	Mon, 7 Feb 2011 20:09:34 -0700 (MST)
From:	Paul Walmsley <paul@...an.com>
To:	John Ogness <john.ogness@...utronix.de>
cc:	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org, balbi@...com
Subject: Re: [PATCH v3] OMAP2/3: clock: fix fint calculation for
 DPLL_FREQSEL

On Fri, 21 Jan 2011, John Ogness wrote:

> From: John Ogness <john.ogness@...utronix.de>
> 
> In OMAP35X TRM Rev 2010-05 Figure 7-18 "DPLL With EMI Reduction
> Feature", it is shown that the internal frequency is calculated by
> CLK_IN/(N+1). However, the value passed to _dpll_test_fint() is
> already "N+1" since Linux is using the values to divide by. In the
> technical reference manual, "N" is referring to the divider's register
> value (0-127).
> 
> Signed-off-by: John Ogness <john.ogness@...utronix.de>

Thanks for the patch, John.  Probably this should go into the -rc series 
since it could affect system stability, so will queue it there.


- Paul
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