From: Måns Rullgård <mans@mansr.com>
Date: Mon, 28 Oct 2013 23:19:53 +0000 (+0000)
Subject: ti814x: Fix illegal use of FP ops in clock_ti814x.c
X-Git-Tag: v2014.04-rc2~72^2~5^2
X-Git-Url: https://git.sur5r.net/?a=commitdiff_plain;h=11f296870659e1375e7116a859458b254cc3156f;p=u-boot

ti814x: Fix illegal use of FP ops in clock_ti814x.c

The function pll_sigma_delta_val uses "float" data which is not correct.
The exact "why" of this mangling is lost to history, but this changes us
to equivalent non-FP math to get the same results.

Reported-by: Wolfgang Denk <wd@denx.de>
Acked-by: Matt Porter <mporter@linaro.org>
---

diff --git a/arch/arm/cpu/armv7/am33xx/clock_ti814x.c b/arch/arm/cpu/armv7/am33xx/clock_ti814x.c
index ef14f47ebc..9b5a47b018 100644
--- a/arch/arm/cpu/armv7/am33xx/clock_ti814x.c
+++ b/arch/arm/cpu/armv7/am33xx/clock_ti814x.c
@@ -211,11 +211,8 @@ static u32 pll_dco_freq_sel(u32 clkout_dco)
 static u32 pll_sigma_delta_val(u32 clkout_dco)
 {
 	u32 sig_val = 0;
-	float frac_div;
 
-	frac_div = (float) clkout_dco / 250;
-	frac_div = frac_div + 0.90;
-	sig_val = (int)frac_div;
+	sig_val = (clkout_dco + 225) / 250;
 	sig_val = sig_val << 24;
 
 	return sig_val;