[U-Boot] [PATCH v4] mmc: socfpga_dw_mmc: Enable calibration for drvsel and smplsel

Marek Vasut marex at denx.de
Fri Nov 27 20:41:55 CET 2015


On Friday, November 27, 2015 at 07:36:27 PM, Simon Glass wrote:
> Hi,
> 
> On 26 November 2015 at 23:22, Chin Liang See <clsee at altera.com> wrote:
> > Enable SDMMC calibration to determine the best setting for
> > drvsel and smplsel. Calibration will be triggered if the
> > drvsel and smplsel node are not available in DTS.
> > 
> > Signed-off-by: Chin Liang See <clsee at altera.com>
> > Cc: Dinh Nguyen <dinguyen at opensource.altera.com>
> > Cc: Dinh Nguyen <dinh.linux at gmail.com>
> > Cc: Pavel Machek <pavel at denx.de>
> > Cc: Marek Vasut <marex at denx.de>
> > Cc: Stefan Roese <sr at denx.de>
> > Cc: Pantelis Antoniou <pantelis.antoniou at konsulko.com>
> > Cc: Simon Glass <sjg at chromium.org>
> > Cc: Jaehoon Chung <jh80.chung at samsung.com>
> > ---
> > Changes for v4
> > - Calibration only run if node not in DTS
> > Changes for v3
> > - Remove the && ok as its redundant
> > Changes for v2
> > - Using standard error return macro
> > - Split to small function to avoid deep identation
> > - Fix coding standard
> > ---
> > 
> >  drivers/mmc/socfpga_dw_mmc.c | 208
> >  ++++++++++++++++++++++++++++++++++++++++++- 1 file changed, 205
> >  insertions(+), 3 deletions(-)
> 
> Should this code go in the generic dw_mmc.c file instead?

*Marek grabs popcorn*

You might want to read the discussion(s) below the previous versions of the 
patch, but TLDR, samsung doesn't want the calibration code to interfere with
their driver it seems.

Best regards,
Marek Vasut


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