From: Scott Wood <scottwood@freescale.com>
To: Yoni Levin <yoni.l@slyde-tech.com>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: how the bytes ordered in mpc8313
Date: Wed, 08 Aug 2007 11:49:29 -0500 [thread overview]
Message-ID: <46B9F419.7060202@freescale.com> (raw)
In-Reply-To: <CE785D12544843B49C5D1315CAE61C23.MAI@mail.livedns.co.il>
Yoni Levin wrote:
> I have mpc83xx,
>
> I saw that I need to use swab32 to any read\write operation from registers,
Only little endian registers (such as PCI).
> Why in the mpc8313 reference in registers description some bits look like
> 31,30,29,.,3,2,1,0
>
> And some: 0,1,2,3.,30,31
Most PowerPC documentation numbers bits in the same endianness as the
bytes in the register.
> Is it just mistake? Or some registers are different then other?
I consider big-endian bit numbering to be a mistake, but good luck
getting them to fix it. :-)
-Scott
next prev parent reply other threads:[~2007-08-08 16:49 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2007-08-08 15:26 how the bytes ordered in mpc8313 Yoni Levin
2007-08-08 16:49 ` Scott Wood [this message]
2007-08-08 16:55 ` Scott Wood
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=46B9F419.7060202@freescale.com \
--to=scottwood@freescale.com \
--cc=linuxppc-embedded@ozlabs.org \
--cc=yoni.l@slyde-tech.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.