[PATCH v3 00/15] Add support for MediaTek MT7621 SoC

[Marek Behún]

On Fri, 29 Apr 2022 15:59:44 +0800
Weijie Gao <weijie.gao at mediatek.com> wrote:

> On Fri, 2022-04-29 at 08:15 +0200, Stefan Roese wrote:
> > Hi Weijie
> > 
> > On 4/29/22 03:23, Weijie Gao wrote:  
> > > Hi Marek,
> > > 
> > > Yes. MT7621 does need such a proprietary binary for DDR
> > > initialization
> > > and calibration. That's why I submit only the ram-bootable part
> > > here.
> > > 
> > > I'm considering to create a preloader to load and run DDR
> > > init&calib
> > > binary and ram-bootable u-boot image. The ram-bootable u-boot image
> > > can be appended to the proloader to form the flash-bootable
> > > bootloader.
> > > 
> > > The source code of preloader will be uploaded to github.  
> > 
> > Just to be sure: You are not implementing this preloader as an U-Boot
> > SPL loader, as this would conflict with U-Boot's GPL compatibility?  
> 
> Yes. Submitting the source code of this binary also violates MTK's non-
> disclosure agreement.

Isn't it possible to submit the DDR training code in binary version,
and somehow call into it from SPL?

Marek