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authorRichard Retanubun <RichardRetanubun@RuggedCom.com>2009-01-29 14:36:06 -0500
committerJohn Rigby <jrigby@freescale.com>2009-02-06 14:54:47 -0700
commite0db344fabfeb4f9649846f94838f51172f6a1f6 (patch)
tree6c30ca2295619fba33e47ddf63474b209ed6d5df /cpu/mcf52x2
parentd1ef25dd81c79dcfad5c2ff0162b1bea21d04bc3 (diff)
Coldfire: M5271: Allow board header file to specify clock multiplier
M5271 dynamic clock multiplier. It is currently fixed at 100MHz. Allow the board header file to set their own multiplier and divider. Added the #define for the multiplier and divider to the cpu header file. Signed-off-by: Richard Retanubun <RichardRetanubun@RuggedCom.com>
Diffstat (limited to 'cpu/mcf52x2')
-rw-r--r--cpu/mcf52x2/cpu_init.c7
1 files changed, 6 insertions, 1 deletions
diff --git a/cpu/mcf52x2/cpu_init.c b/cpu/mcf52x2/cpu_init.c
index d88acc5e9..11f70b0db 100644
--- a/cpu/mcf52x2/cpu_init.c
+++ b/cpu/mcf52x2/cpu_init.c
@@ -181,9 +181,14 @@ void cpu_init_f(void)
/* FlexBus Chipselect */
init_fbcs();
+#ifdef CONFIG_SYS_MCF_SYNCR
+ /* Set clockspeed according to board header file */
+ mbar_writeLong(MCF_FMPLL_SYNCR, CONFIG_SYS_MCF_SYNCR);
+#else
/* Set clockspeed to 100MHz */
- mbar_writeShort(MCF_FMPLL_SYNCR,
+ mbar_writeLong(MCF_FMPLL_SYNCR,
MCF_FMPLL_SYNCR_MFD(0) | MCF_FMPLL_SYNCR_RFD(0));
+#endif
while (!mbar_readByte(MCF_FMPLL_SYNSR) & MCF_FMPLL_SYNSR_LOCK) ;
}