[U-Boot] [PATCH v2] efikamx: sync Smartbook DDR settings in DCD with those found in Genesi's production U-Boot
Stefano Babic
sbabic at denx.de
Mon Aug 27 19:39:26 CEST 2012
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 at genesi-usa.com>
> Cc: Stefano Babic <sbabic at denx.de>
> Cc: Marek Vasut <marex at denx.de>
> ---
Applied to u-boot-imx, thanks.
Best regards,
Stefano Babic
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