From: Stefan Roese <sr@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH] ppc4xx: Disable trace broadcast for 44x non debug mode
Date: Wed, 22 Sep 2010 11:01:40 +0200 [thread overview]
Message-ID: <201009221101.41005.sr@denx.de> (raw)
In-Reply-To: <1284661924-16557-1-git-send-email-vgallardo@apm.com>
On Thursday 16 September 2010 20:32:04 Victor Gallardo wrote:
> By default the trace broadcast is enabled on 44x systems.
>
> To reduce power consumption when instruction tracing is
> not needed, disable trace broadcast.
>
> Check External Debug Mode (EDM) bit to detect if it should be
> disabled or not.
>
> Resetting system via a debugger will set the DBCR0[EDM] bit.
> Resetting via u-boot or OS will not.
Applied to u-boot-ppc4xx/next. Thanks.
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:[~2010-09-22 9:01 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2010-09-16 18:32 [U-Boot] [PATCH] ppc4xx: Disable trace broadcast for 44x non debug mode Victor Gallardo
2010-09-22 9:01 ` Stefan Roese [this message]
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