[U-Boot] [PATCH] powerpc/esdhc: force the bus width to 4bit

[Huang Changming-R66093]

> -----Original Message-----
> From: Marek Vasut [mailto:marex at denx.de]
> Sent: Thursday, November 01, 2012 11:06 AM
> To: Huang Changming-R66093
> Cc: Andy Fleming; u-boot at linux.freescale.net; u-boot at lists.denx.de
> Subject: Re: [PATCH] powerpc/esdhc: force the bus width to 4bit
> 
> Dear Huang Changming-R66093,
> 
> Reposting _AGAIN_ because you again discarded the U-Boot ML address.

I don't know why, I replied to all, not discard any address.

> 
> > > -----Original Message-----
> > > From: Marek Vasut [mailto:marex at denx.de]
> > > Sent: Thursday, November 01, 2012 10:26 AM
> > > To: Huang Changming-R66093
> > > Cc: Andy Fleming; u-boot at linux.freescale.net
> > > Subject: Re: [PATCH] powerpc/esdhc: force the bus width to 4bit
> > >
> > > Dear Huang Changming-R66093,
> > >
> > > > Andy,
> > > > Do you agree my suggest to revert these codes to fix this issue?
> > >
> > > Please ... do us all a favor, read [1] and stop being so
> > > inconsiderate of others! Given that I can no longer make any sense
> > > of this thread because of your top-posting making it complete utmost
> > > mess, my opinion is NAK on reverting them.
> > >
> > > [1] http://www.ietf.org/rfc/rfc1855.txt
> >
> > Then, could you give some suggest, how to fix the 12bit-width issue?
> 
> see drivers/mmc/mmc.c:
> 
> 1089 width = ((mmc->host_caps & MMC_MODE_MASK_WIDTH_BITS) >>
> 1090          MMC_MODE_WIDTH_BITS_SHIFT);
> 
> Fix this snipped of code and the related code below ... that's the way to
> go about it.
> 
Yes, I can change these codes to:
Width = EXT_CSD_BUS_WIDTH_8;

Then, first value of width will be 2.

But, those modification is I said, the codes is reverted to the old codes.