On 12/3/2013 12:56 PM, Fabio Estevam wrote:
From: Fabio Estevam <fabio.este...@freescale.com>
According to the mx6 quad reference manual, the DIV_SELECT field of register
CCM_ANALOG_PLL_ENETn has the following meaning:
"Controls the frequency of the ethernet reference clock.
- 00 - 25MHz
- 01 - 50MHz
- 10 - 100MHz
- 11 - 125MHz"
Current logic does not handle the 25MHz case correctly, so fix it.
Signed-off-by: Rabeeh Khoury <rab...@solid-run.com>
Signed-off-by: Fabio Estevam <fabio.este...@freescale.com>
---
arch/arm/cpu/armv7/mx6/clock.c | 5 ++++-
1 file changed, 4 insertions(+), 1 deletion(-)
diff --git a/arch/arm/cpu/armv7/mx6/clock.c b/arch/arm/cpu/armv7/mx6/clock.c
index 873d9d0..eab8596 100644
--- a/arch/arm/cpu/armv7/mx6/clock.c
+++ b/arch/arm/cpu/armv7/mx6/clock.c
@@ -94,7 +94,10 @@ static u32 decode_pll(enum pll_clocks pll, u32 infreq)
div = __raw_readl(&imx_ccm->analog_pll_enet);
div &= BM_ANADIG_PLL_ENET_DIV_SELECT;
- return (div == 3 ? 125000000 : 25000000 * (div << 1));
+ if (div == 0)
+ return 25000000;
+ else
+ return (div == 3 ? 125000000 : 25000000 * (div << 1));
default:
return 0;
}
How about just
return 25000000 * (div + (div >> 1) + 1);
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