[U-Boot] [PATCH] armv8/fsl-layerscape: add IFC fixup for LS1043A with QSPI enabled

[Qianyu Gong]

Hi York,

> -----Original Message-----
> From: york sun
> Sent: Wednesday, July 20, 2016 5:58 AM
> To: Scott Wood <oss at buserror.net>; Qianyu Gong <qianyu.gong at nxp.com>; u-
> boot at lists.denx.de
> Cc: Mingkai Hu <mingkai.hu at nxp.com>
> Subject: Re: [PATCH] armv8/fsl-layerscape: add IFC fixup for LS1043A with QSPI
> enabled
> 
> On 03/30/2016 07:39 PM, Scott Wood wrote:
> > On Wed, 2016-03-30 at 06:20 +0000, Qianyu Gong wrote:
> 
> <snip>
> 
> >>
> >> Because this muxing can't be changed at runtime.
> >> Two ways so far to configure it:
> >> 1. SW6[1-4] switches on ls1043aqds board.
> >> 2. Modify QIXIS board config registers and reset the board.
> >
> > These sound like runtime to me -- not compile time.
> >
> 
> Qianyu,
> 
> If one can change mux by either changing switches, or setting QIXIS registers, you
> should be able to read those status and run the fixup, agree?
> 
> York

Yes, we could read QIXIS registers at runtime. But the current argument is that if we need to
build two rcw&U-Boot images to support IFC or QSPI, which is already done on LS1021AQDS
and LS1043AQDS. This is made at compile time and I just have no idea to solve the rcw issue.
So.. how do you think about it?


Regards,
Qianyu