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

Simon Glass sjg at chromium.org
Sun Nov 29 02:59:37 CET 2015


Hi Marek,

On 27 November 2015 at 11:41, Marek Vasut <marex at denx.de> wrote:
> 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.

OK, fair enough. Let's see what happens when the next person wants to
add this feature.

Regards,
Simon


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