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mx5 clocks: Fix get_ipg_per_clk() 

This fixes the "IPG PERCLK" frequency printed by the clocks command. The issue
was that get_ipg_per_clk() used periph_clk instead of lp_apm in the case
CCM.CBCMR.perclk_lp_apm_sel is set.

It also fixes I²C support.

Signed-off-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Cc: Stefano Babic <sbabic@denx.de>
utp
Benoît Thébaudeau 2012-09-27 10:23:08 +00:00 committed by Tom Rini
parent 55c8df0cb1
commit f124e718f4
1 changed files with 7 additions and 3 deletions
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10
arch/arm/cpu/armv7/mx5/clock.c
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@ -315,16 +315,20 @@ static u32 get_ipg_clk(void)
*/
static u32 get_ipg_per_clk(void)
{
u32 pred1, pred2, podf;
u32 freq, pred1, pred2, podf;
if (readl(&mxc_ccm->cbcmr) & MXC_CCM_CBCMR_PERCLK_IPG_CLK_SEL)
return get_ipg_clk();
/* Fixme: not handle what about lpm*/
if (readl(&mxc_ccm->cbcmr) & MXC_CCM_CBCMR_PERCLK_LP_APM_CLK_SEL)
freq = get_lp_apm();
else
freq = get_periph_clk();
podf = readl(&mxc_ccm->cbcdr);
pred1 = MXC_CCM_CBCDR_PERCLK_PRED1_RD(podf);
pred2 = MXC_CCM_CBCDR_PERCLK_PRED2_RD(podf);
podf = MXC_CCM_CBCDR_PERCLK_PODF_RD(podf);
return get_periph_clk() / ((pred1 + 1) * (pred2 + 1) * (podf + 1));
return freq / ((pred1 + 1) * (pred2 + 1) * (podf + 1));
}
/*