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clock-imx35: correct arm and ahb clock calculation

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According to the Datasheet:
"i.MX35 (MCIMX35) Multimedia Applications Processor Reference Manual,
Rev. 2" "Figure 14-24. Clock Control And Gating"
change the result of get_rate_ahb based on the frequency returned
by get_rate_arm to calculate the proper rate.

Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Marc Kleine-Budde 2010-08-16 15:54:06 +02:00 committed by Sascha Hauer
parent c96c1e394f
commit c56702de10
1 changed files with 2 additions and 2 deletions
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4
arch/arm/mach-mx3/clock-imx35.c
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@ -155,7 +155,7 @@ static unsigned long get_rate_arm(void)
aad = &clk_consumer[(pdr0 >> 16) & 0xf];
if (aad->sel)
fref = fref * 2 / 3;
fref = fref * 3 / 4;
return fref / aad->arm;
}
@ -164,7 +164,7 @@ static unsigned long get_rate_ahb(struct clk *clk)
{
unsigned long pdr0 = __raw_readl(CCM_BASE + CCM_PDR0);
struct arm_ahb_div *aad;
unsigned long fref = get_rate_mpll();
unsigned long fref = get_rate_arm();
aad = &clk_consumer[(pdr0 >> 16) & 0xf];