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i.MX25: fix get_rate_otg to return the correct value 

usb drivers need to get the right value for otg clock so
calculate and return it

Signed-off-by: Eric Bénard <eric@eukrea.com>
Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
hifive-unleashed-5.1
Eric Bénard 2010-06-08 11:02:57 +02:00 committed by Sascha Hauer
parent 648beaf5bd
commit a6e92b49ae
1 changed files with 4 additions and 1 deletions
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5
arch/arm/mach-mx25/clock.c
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@ -131,7 +131,10 @@ static unsigned long get_rate_lcdc(struct clk *clk)
static unsigned long get_rate_otg(struct clk *clk)
{
return 48000000; /* FIXME */
unsigned long cctl = readl(CRM_BASE + CCM_CCTL);
unsigned long rate = get_rate_upll();
return (cctl & (1 << 23)) ? 0 : rate / ((0x3F & (cctl >> 16)) + 1);
}
static int clk_cgcr_enable(struct clk *clk)