[U-Boot] [PATCH 2/2] arm: socfpga: config: Remove hard-coded drvsel and smpsel

[Marek Vasut <marex@denx.de>]

On Thursday, August 20, 2015 at 08:58:23 AM, Chin Liang See wrote:
> On Thu, 2015-08-20 at 07:27 +0200, marex at denx.de wrote:
> > On Thursday, August 20, 2015 at 07:15:25 AM, Chin Liang See wrote:
> > > Hi Marek,
> > 
> > Hi,
> > 
> > > On Wed, 2015-08-19 at 03:22 -0500, Chin Liang See wrote:
> > > > Hi,
> > > > 
> > > > On Wed, 2015-08-19 at 09:37 +0200, marex at denx.de wrote:
> > > > > On Wednesday, August 19, 2015 at 07:55:14 AM, Chin Liang See wrote:
> > > > > > Remove hard-coded SDMMC timing parameter drvsel and smplsel.
> > > > > > This setting now will come from SDMMC calibration
> > > > > > 
> > > > > > Signed-off-by: Chin Liang See <clsee@altera.com>
> > > > > > Cc: Dinh Nguyen <dinguyen@opensource.altera.com>
> > > > > > Cc: Pavel Machek <pavel@denx.de>
> > > > > > Cc: Marek Vasut <marex@denx.de>
> > > > > > Cc: Wolfgang Denk <wd@denx.de>
> > > > > > Cc: Stefan Roese <sr@denx.de>
> > > > > > Cc: Tom Rini <trini@konsulko.com>
> > > > > > ---
> > > > > > 
> > > > > >  include/configs/socfpga_common.h |    2 --
> > > > > >  1 files changed, 0 insertions(+), 2 deletions(-)
> > > > > > 
> > > > > > diff --git a/include/configs/socfpga_common.h
> > > > > > b/include/configs/socfpga_common.h index 5ca45a9..1ca795c 100644
> > > > > > --- a/include/configs/socfpga_common.h
> > > > > > +++ b/include/configs/socfpga_common.h
> > > > > > @@ -155,8 +155,6 @@
> > > > > > 
> > > > > >  #define CONFIG_DWMMC
> > > > > >  #define CONFIG_SOCFPGA_DWMMC
> > > > > >  #define CONFIG_SOCFPGA_DWMMC_FIFO_DEPTH	1024
> > > > > 
> > > > > I believe this is pulled from DT nowaways, so feel free to send a
> > > > > separate patch to remove this from here and README.socfpga.
> > > > > 
> > > > > > -#define CONFIG_SOCFPGA_DWMMC_DRVSEL	3
> > > > > > -#define CONFIG_SOCFPGA_DWMMC_SMPSEL	0
> > > > > 
> > > > > Certainly, I agree, this horribleness should go away.
> > > > > 
> > > > > >  /* FIXME */
> > > > > >  /* using smaller max blk cnt to avoid flooding the limited stack
> > > > > >  we have
> > > > > > 
> > > > > > */ #define CONFIG_SYS_MMC_MAX_BLK_COUNT	256	/* FIXME -- SPL
> > 
> > only? */
> > 
> > > > > Now that you're digging in the SD/MMC stuff -- is this still
> > > > > relevant at all? I don't think so, so you should be able to remove
> > > > > this as well (again, in a separate patch and with a sufficient
> > > > > amount of testing).
> > > > 
> > > > Ok, let me take a look into this.
> > > 
> > > I further checked and we still need this.
> > 
> > Why ?
> > 
> > > But I believe all these info can be moved to dts.
> > 
> > Is this a property (limitation) of the hardware ?
> > 
> > > Let mark this as future enhancement.
> > 
> > This is a current FIXME ;-)
> 
> Actually I tested after remove this. It failed with fatload a 10MB file.
> I need to troubleshoot to understand further on this. Hope this FIXME
> won't be long :) haha

I see. I'd like to know what the problem is, whether this is silicon limitation,
stack limitation (shouldn't be the case) or something else.