From: Arnd Bergmann <arnd@arndb.de>
To: Segher Boessenkool <segher@kernel.crashing.org>
Cc: linuxppc-dev@ozlabs.org,
openipmi-developer@lists.sourceforge.net,
Christian Krafft <krafft@de.ibm.com>
Subject: Re: [Openipmi-developer] [patch 1/1] ipmi: add autosensing of ipmi device on powerpc using device-tree
Date: Sat, 9 Dec 2006 12:46:19 +0100 [thread overview]
Message-ID: <200612091246.19732.arnd@arndb.de> (raw)
In-Reply-To: <4FBDC6E5-1B34-41A3-AF78-4B5917EA6848@kernel.crashing.org>
On Saturday 09 December 2006 10:46, Segher Boessenkool wrote:
> How do you know? =A0Some later compatible implementation might add
> some regs. =A0Also, there are implementations that simply ignore
> the lower address bits, so size=3D1 in the "reg" property is wrong
> for those.
>=20
> > but depending on the HW implementation, they may be
> > between 1 and 4 bytes wide, and can have a different spacing.
>=20
> Always one byte wide.
AFAICS, some implementations require word access on the registers,
even if only part of it is used. That's why the driver has
the concept of reg-size and reg-shift.
Arnd <><
next prev parent reply other threads:[~2006-12-09 11:46 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-12-07 16:22 [patch 0/1] ipmi: add autosensing of ipmi device on powerpc using device-tree Christian Krafft
2006-12-07 16:24 ` [patch 1/1] " Christian Krafft
2006-12-08 10:24 ` Heiko Joerg Schick
2006-12-08 17:19 ` [Openipmi-developer] " Corey Minyard
2006-12-11 12:13 ` Christian Krafft
2006-12-08 18:59 ` Corey Minyard
2006-12-08 19:49 ` Arnd Bergmann
2006-12-08 22:50 ` Benjamin Herrenschmidt
2006-12-09 0:00 ` Arnd Bergmann
2006-12-09 0:07 ` Corey Minyard
2006-12-09 11:44 ` Arnd Bergmann
2006-12-10 18:42 ` Heiko J Schick
2006-12-11 10:11 ` Arnd Bergmann
2006-12-11 13:01 ` Heiko J Schick
2006-12-11 13:37 ` Segher Boessenkool
2006-12-11 13:18 ` Segher Boessenkool
2006-12-11 14:25 ` Arnd Bergmann
2006-12-11 16:28 ` Heiko J Schick
2006-12-11 16:58 ` Segher Boessenkool
2006-12-11 17:20 ` Christian Krafft
2006-12-11 16:54 ` Segher Boessenkool
2006-12-09 2:14 ` Benjamin Herrenschmidt
2006-12-09 9:46 ` Segher Boessenkool
2006-12-09 11:46 ` Arnd Bergmann [this message]
2006-12-08 0:41 ` [patch 0/1] " Paul Mackerras
2006-12-08 14:04 ` Arnd Bergmann
2006-12-08 17:17 ` [Openipmi-developer] " Corey Minyard
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=200612091246.19732.arnd@arndb.de \
--to=arnd@arndb.de \
--cc=krafft@de.ibm.com \
--cc=linuxppc-dev@ozlabs.org \
--cc=openipmi-developer@lists.sourceforge.net \
--cc=segher@kernel.crashing.org \
/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.