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>
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index d200531..6c9c78c 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -312,6 +312,10 @@
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);