[U-Boot] [PATCH v2 1/2] arm: socfpga: mmc: Enable calibration for drvsel and smpsel

Chin Liang See clsee at altera.com
Fri Aug 21 03:25:00 CEST 2015


On Fri, 2015-08-21 at 03:07 +0200, marex at denx.de wrote:
> On Friday, August 21, 2015 at 02:54:00 AM, Chin Liang See wrote:
> > Hi guys,
> 
> Hi,
> 
> > Any comment or ack for this patch?
> 
> Please don't expect that the reviewers/maintainers have nothing else on
> their plate but to review your patch. Besides, this change is really low
> priority one, since thus far the SD/MMC works fine on all of the SoCFPGA
> boards to my knowledge.
> 
> Also, I thought we agreed to wait for Simon to comment on this patch.
> You don't have to repost a patch before the discussion settles a bit.
> This doesn't help, it only puts burden on the receiving side, chill :)
> Let alone the fact that this code should be part of the DWMMC core, as
> it is not socfpga specific.
> 
> What I would be really interested in is a proper description of the
> calibration algorithm. What is the goal and how do you achieve it ?
> 

Actually I am probing the efforts needed for this patch before moving to
next one. While for the SDMMC calibration, it is not needed if the SD
card is routed near to the chip. We have incident where SD access failed
as they routed few inches away.

With that, let wait for Simon and I shall move on next item.
Thanks

Chin Liang


> Best regards,
> Marek Vasut




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