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>
15 years ago · a6e92b49ae
parent 648beaf5bd
commit a6e92b49ae
1 changed files with 4 additions and 1 deletions
--- a/arch/arm/mach-mx25/clock.c
+++ b/arch/arm/mach-mx25/clock.c
@ -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)