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

Message ID 1414153983-8611-3-git-send-email-B37916@freescale.com
State Changes Requested
Delegated to: Stefano Babic
Headers show

Commit Message

Ye.Li Oct. 24, 2014, 12:33 p.m. UTC 
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>
---
 arch/arm/cpu/armv7/mx6/clock.c |    4 ++++
 1 files changed, 4 insertions(+), 0 deletions(-)
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Patch

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);