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]
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