From: Rajendra Nayak <rnayak@ti.com>
Date: Mon, 16 Nov 2009 13:36:53 +0000 (+0000)
Subject: omap3: clock: Fix the DPLL freqsel computations
X-Git-Tag: v3.12-rc1~12260^2~3
X-Git-Url: http://review.tizen.org/git/?a=commitdiff_plain;h=9346f48b26a4b48a7d56314bbb94e6b801e28316;p=kernel%2Fkernel-generic.git

omap3: clock: Fix the DPLL freqsel computations

Fix the freqsel value computation. Use n instead of (n+1)

The formula in the TRM uses a zero-based N, hence the (n+1); however
at this point in the clock34xx.c code, N is one-based.

Hayati Bayrakdar <h-bayrakdar@ti.com> and Nishanth Menon <nm@ti.com> helped
track down this bug.

Signed-off-by: Rajendra Nayak <rnayak@ti.com>
Signed-off-by: Paul Walmsley <paul@pwsan.com>
[paul@pwsan.com: modified commit message]
Cc: Hayati Bayrakdar <h-bayrakdar@ti.com>
Cc: Nishanth Menon <nm@ti.com>
Signed-off-by: Tony Lindgren <tony@atomide.com>
---

diff --git a/arch/arm/mach-omap2/clock34xx.c b/arch/arm/mach-omap2/clock34xx.c
index 489556e..7c5c00d 100644
--- a/arch/arm/mach-omap2/clock34xx.c
+++ b/arch/arm/mach-omap2/clock34xx.c
@@ -473,7 +473,7 @@ static u16 _omap3_dpll_compute_freqsel(struct clk *clk, u8 n)
 	unsigned long fint;
 	u16 f = 0;
 
-	fint = clk->dpll_data->clk_ref->rate / (n + 1);
+	fint = clk->dpll_data->clk_ref->rate / n;
 
 	pr_debug("clock: fint is %lu\n", fint);