From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] AT91: USB and DCACHE issue (was: ELF_RELOC causes strange I-cache issues)
Date: Thu, 21 Oct 2010 13:31:09 +0200 [thread overview]
Message-ID: <201010211331.10211.sr@denx.de> (raw)
In-Reply-To: <4CC02262.7040809@emk-elektronik.de>
On Thursday 21 October 2010 13:22:10 Reinhard Meyer wrote:
> > Correct. Note that the EHCI driver already supports such a mode with
> > d-cache enabled. You need to set CONFIG_EHCI_DCACHE to enable these
> > cache handling functions.
>
> AT91 uses OHCI.
> As far as I can tell there is no cache code in it.
> And I am not sure whether the USB RAM is cache inhibited.
> Do any other architectures work with DCACHE and OHCI?
No, the OHCI code has no d-cache support right now. This needs to be added
when used with d-cache enabled.
Cheers,
Stefan
--
DENX Software Engineering GmbH, MD: Wolfgang Denk & Detlev Zundel
HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany
Phone: (+49)-8142-66989-0 Fax: (+49)-8142-66989-80 Email: office at denx.de
prev parent reply other threads:[~2010-10-21 11:31 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-10-21 11:22 [U-Boot] AT91: USB and DCACHE issue (was: ELF_RELOC causes strange I-cache issues) Reinhard Meyer
2010-10-21 11:31 ` Stefan Roese [this message]
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=201010211331.10211.sr@denx.de \
--to=sr@denx.de \
--cc=u-boot@lists.denx.de \
/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