[U-Boot] [PATCH v2 3/5] imx: mx6: Change the get_ipg_per_clk for OSC 24Mhz source

[Ye.Li]

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 at freescale.com>
---
Changes since v1:
- None

 arch/arm/cpu/armv7/mx6/clock.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)

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 @@ 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);
-- 
1.7.4.1