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-rw-r--r--cpu/ppc4xx/speed.c9
1 files changed, 7 insertions, 2 deletions
diff --git a/cpu/ppc4xx/speed.c b/cpu/ppc4xx/speed.c
index f8f88ff..be0de0c 100644
--- a/cpu/ppc4xx/speed.c
+++ b/cpu/ppc4xx/speed.c
@@ -383,8 +383,13 @@ void get_sys_info (PPC405_SYS_INFO * sysInfo)
*/
pllmr0_ccdv = ((pllmr0 & PLLMR0_CPU_DIV_MASK) >> 20) + 1;
if (pllmr1 & PLLMR1_SSCS_MASK) {
- sysInfo->freqProcessor = (CONFIG_SYS_CLK_FREQ * sysInfo->pllFbkDiv)
- / pllmr0_ccdv;
+ /*
+ * This is true if FWDVA == FWDVB:
+ * sysInfo->freqProcessor = (CONFIG_SYS_CLK_FREQ * sysInfo->pllFbkDiv)
+ * / pllmr0_ccdv;
+ */
+ sysInfo->freqProcessor = (CONFIG_SYS_CLK_FREQ * sysInfo->pllFbkDiv * sysInfo->pllFwdDivB)
+ / sysInfo->pllFwdDiv / pllmr0_ccdv;
} else {
sysInfo->freqProcessor = CONFIG_SYS_CLK_FREQ / pllmr0_ccdv;
}