From 95a4a593b577b6e2f1da2d4b0f5ec86975c33413 Mon Sep 17 00:00:00 2001 From: Stefan Roese Date: Fri, 11 Sep 2009 17:07:55 +0200 Subject: 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 --- cpu/ppc4xx/speed.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) (limited to 'cpu') diff --git a/cpu/ppc4xx/speed.c b/cpu/ppc4xx/speed.c index 1f751372ca..9c4bc09904 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; } /******************************************** -- cgit v1.2.1