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From: Stefano Babic <sbabic@denx.de>
To: u-boot@lists.denx.de
Subject: [U-Boot] [PATCH v2] efikamx: sync Smartbook DDR settings in DCD with those found in Genesi's production U-Boot
Date: Mon, 27 Aug 2012 19:39:26 +0200	[thread overview]
Message-ID: <503BB0CE.6060006@denx.de> (raw)
In-Reply-To: <1345826664-20210-1-git-send-email-matt@genesi-usa.com>

On 24/08/2012 18:44, Matt Sealey wrote:
> We have no idea where the DCD was derived from for Smartbook support, but they
> differ from the Smarttop settings, MX51EVK settings and certainly don't
> correspond to any shipped or development version of U-Boot that Genesi has ever
> had on any Smartbook.
> 
> So, copy the calibrated, verified settings from the U-Boot as shipped with every
> Smartbook since retail production. Remove those few settings that just set the
> POR defaults which have already been confirmed for the previous Smarttop DCD
> change.
> 
> One of the lines is specific to i.MX51 TO3 designs and therefore TO2 Smartbooks
> will possibly not work so reliably with this new DCD; that said, TO2 Smartbooks
> basically don't exist at retail and the number of units in the world is less
> than 5 (3 of which are at the Genesi office or owned by Genesi employees).
> 
> Many hours of memory testing confirms the new settings are stable.
> 
> Patch v2:
>  * picked the correct commit from our development tree, correcting tuned DDR ODF setting
>    (which was correct anyway)
> 
> Signed-off-by: Matt Sealey <matt@genesi-usa.com>
> Cc: Stefano Babic <sbabic@denx.de>
> Cc: Marek Vasut <marex@denx.de>
> ---


Applied to u-boot-imx, thanks.

Best regards,
Stefano Babic


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      reply	other threads:[~2012-08-27 17:39 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2012-08-24 16:44 [U-Boot] [PATCH v2] efikamx: sync Smartbook DDR settings in DCD with those found in Genesi's production U-Boot Matt Sealey
2012-08-27 17:39 ` Stefano Babic [this message]

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