From: Kumar Gala <galak@kernel.crashing.org>
To: Fredrik Roubert <roubert@df.lth.se>
Cc: linuxppc-embedded@ozlabs.org
Subject: Re: PowerPC Local Bus
Date: Wed, 9 Aug 2006 08:05:16 -0500 [thread overview]
Message-ID: <0100B07F-70D3-4A35-8D1B-3452B2157027@kernel.crashing.org> (raw)
In-Reply-To: <20060809122904.GE3918@igloo.df.lth.se>
On Aug 9, 2006, at 7:29 AM, Fredrik Roubert wrote:
> On Tue 08 Aug 17:03 CEST 2006, Kumar Gala wrote:
>
>> The reason you haven't seen any code is due to several reasons. One,
>> FPGA/localbus implementations can be very specific and thus reuse is
>> difficult. Two, some of this code tends to end up it boot loaders to
>> setup the UPM (take a look at U-boot for possible UPM config code).
>
> OK, so you do all the setup in the boot loader and then the driver
> just
> needs to ioremap() the FPGA? That sounds reasonable and explains why I
> haven't found any kernel source code relating to this ...
>
> I just didn't expect the kernel to rely on the boot loader to
> configure
> this. Is that the recommended way to to it?
I don't think there is any recommendation one way or the other. Its
just that the boards that are currently supported in the kernel doing
have FGPAs needing UPM config and thus there isn't any code one way
or the other.
- kumar
next prev parent reply other threads:[~2006-08-09 13:05 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2006-08-08 13:50 PowerPC Local Bus Fredrik Roubert
2006-08-08 15:03 ` Kumar Gala
2006-08-09 12:29 ` Fredrik Roubert
2006-08-09 13:05 ` Kumar Gala [this message]
2006-08-08 16:06 ` David Hawkins
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=0100B07F-70D3-4A35-8D1B-3452B2157027@kernel.crashing.org \
--to=galak@kernel.crashing.org \
--cc=linuxppc-embedded@ozlabs.org \
--cc=roubert@df.lth.se \
/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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox