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From: Wolfgang Denk <wd@denx.de>
To: "Robert P. J. Day" <rpjday@mindspring.com>
Cc: Embedded PPC Linux list <linuxppc-embedded@ozlabs.org>
Subject: Re: I2C/SPI/SMC relocation patch works for both SMC 1 and 2?
Date: Tue, 28 Sep 2004 17:22:09 +0200	[thread overview]
Message-ID: <20040928152214.CC499C1430@atlas.denx.de> (raw)
In-Reply-To: Your message of "Tue, 28 Sep 2004 08:43:32 EDT." <Pine.LNX.4.60.0409280836340.9825@localhost.localdomain>

In message <Pine.LNX.4.60.0409280836340.9825@localhost.localdomain> you wrote:
> 
>    but the PDF file doesn't refer explicitly to SMC1, just to the 
> generic SMC(UART).  does this mean that the same instructions to 

It relates to the SMC which parameter RAM  location  is  in  conflict
with the SPI/I2C parameter RAM, i. e. SMC1.

> relocate SMC1 could also relocate SMC2 at the same time?  the writeup 

I think it makes little sense to speculate about this without knowing
anything about how the microcode patch actually works.

> isn't clear on this and, from what i've read, it might be useful to 
> relocate SMC2 if one wants to use the reserved memory just before it 
> for, say, ethernet on SCC4 (if that's even possible).

No, this is impossible as there is no SCC4 on a MPC823/850.

>    so, short question -- i know that patch supports relocating SMC1. 
> does it also handle *both* SMC1 and SMC2?  or, perhaps, SMC2 all by 
> itself?  there's nothing in the writeup i can see that clarified this.

It is not even mentioned, so assume it is NOT supported.

Best regards,

Wolfgang Denk

-- 
Software Engineering:  Embedded and Realtime Systems,  Embedded Linux
Phone: (+49)-8142-4596-87  Fax: (+49)-8142-4596-88  Email: wd@denx.de
I think it's a new feature. Don't tell anyone it was an accident. :-)
  -- Larry Wall on s/foo/bar/eieio in <10911@jpl-devvax.JPL.NASA.GOV>

  reply	other threads:[~2004-09-28 15:22 UTC|newest]

Thread overview: 4+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2004-09-28 12:43 I2C/SPI/SMC relocation patch works for both SMC 1 and 2? Robert P. J. Day
2004-09-28 15:22 ` Wolfgang Denk [this message]
2004-09-28 17:21   ` Robert P. J. Day
2004-09-29 14:22     ` Wolfgang Denk

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