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authorStefan Roese <sr@denx.de>2009-09-11 17:07:55 +0200
committerStefan Roese <sr@denx.de>2009-09-17 14:05:52 +0200
commit95a4a593b577b6e2f1da2d4b0f5ec86975c33413 (patch)
tree4b9908b43798194ffc487ad37439cbb493cdfc7d /cpu/ppc4xx
parent15fba3279b56333bdb65ead366f82c945ed320d1 (diff)
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ppc4xx: Fix 405EZ uart base baud calculation
With this fix, Linux correctly configures the baudrate when booting with FDT passed from U-Boot to Linux. Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'cpu/ppc4xx')
-rw-r--r--cpu/ppc4xx/speed.c6
1 files changed, 5 insertions, 1 deletions
diff --git a/cpu/ppc4xx/speed.c b/cpu/ppc4xx/speed.c
index 1f75137..9c4bc09 100644
--- a/cpu/ppc4xx/speed.c
+++ b/cpu/ppc4xx/speed.c
@@ -914,6 +914,7 @@ void get_sys_info (PPC4xx_SYS_INFO * sysInfo)
unsigned long sysClkPeriodPs = ONE_BILLION / (CONFIG_SYS_CLK_FREQ/1000);
unsigned long primad_cpudv;
unsigned long m;
+ unsigned long plloutb;
/*
* Read PLL Mode registers
@@ -999,7 +1000,10 @@ void get_sys_info (PPC4xx_SYS_INFO * sysInfo)
sysInfo->freqEBC = (CONFIG_SYS_CLK_FREQ * sysInfo->pllFbkDiv) /
sysInfo->pllExtBusDiv;
- sysInfo->freqUART = sysInfo->freqVCOHz;
+ plloutb = ((CONFIG_SYS_CLK_FREQ * ((cpr_pllc & PLLC_SRC_MASK) ?
+ sysInfo->pllFwdDivB : sysInfo->pllFwdDiv) * sysInfo->pllFbkDiv) /
+ sysInfo->pllFwdDivB);
+ sysInfo->freqUART = plloutb;
}
/********************************************