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From: Peter Asemann <peter.asemann@web.de>
To: u-boot@lists.denx.de
Subject: [U-Boot-Users] comment in mpc8xx - cpu_init.c - line 76
Date: Fri, 28 Jan 2005 16:25:29 +0100	[thread overview]
Message-ID: <41FA5969.4050107@web.de> (raw)

Line 76 in the most up-to-date version of 
.../u-boot/cpu/mpc8xx/cpu_init.c tells me NOT to change EBDF.
Do I need to stick to this... advice?

The Hard Reset Configuration word of my MPC875-powered hardware is 
hard-wired to set the SCCR[EBDF] to 01 (half bus speed) at hard reset in 
the moment.
I had hoped that I could change SCCR[EBDF] to 00 (full bus speed) via 
software if needed.

So - is the comment in the code some kind of serious warning, for the 
CPU will burn or crash if I try to change EBDF via software, or may I 
ignore it? I'd need the hardware guys to put in some additional jumper 
in case I can't change SCCR[EBDF] by software for some reason.

Thanks for your time,

Peter Asemann

             reply	other threads:[~2005-01-28 15:25 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2005-01-28 15:25 Peter Asemann [this message]
2005-01-28 20:53 ` [U-Boot-Users] comment in mpc8xx - cpu_init.c - line 76 Wolfgang Denk

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