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imx: mx6: Change the get_ipg_per_clk for OSC 24Mhz source 

For MX6SL and MX6SX, the perclk can come from OSC 24Mhz source. Fix
the get_ipg_per_clk function to support it.

Signed-off-by: Ye.Li <B37916@freescale.com>
This commit is contained in:
Ye.Li 2014-10-30 18:20:57 +08:00 committed by Stefano Babic
parent 0561b8edf0
commit e68661a32e
1 changed files with 4 additions and 0 deletions
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4
arch/arm/cpu/armv7/mx6/clock.c
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@ -312,6 +312,10 @@ static u32 get_ipg_per_clk(void)
u32 reg, perclk_podf;
reg = __raw_readl(&imx_ccm->cscmr1);
#if (defined(CONFIG_MX6SL) || defined(CONFIG_MX6SX))
if (reg & MXC_CCM_CSCMR1_PER_CLK_SEL_MASK)
return MXC_HCLK; /* OSC 24Mhz */
#endif
perclk_podf = reg & MXC_CCM_CSCMR1_PERCLK_PODF_MASK;
return get_ipg_clk() / (perclk_podf + 1);