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ppc4xx: Fix 405EZ uart base baud calculation

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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>
This commit is contained in:
Stefan Roese 2009-09-11 17:07:55 +02:00 committed by Tom Rix
parent f8d7b56e00
commit bda4dece03
1 changed files with 5 additions and 1 deletions
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6
cpu/ppc4xx/speed.c
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@ -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;
}
/********************************************