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

[Weijie Gao]

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.

> 
> Thanks,
> Stefan
> 
> > Best Regards,
> > Weijie
> > 
> > On Thu, 2022-04-28 at 18:19 +0200, Marek Behún wrote:
> > > On Thu, 28 Apr 2022 18:37:09 +0800
> > > Weijie Gao <weijie.gao at mediatek.com> wrote:
> > > 
> > > > This series will add support for MediaTek MT7621 SoC with two
> > > > reference boards
> > > > and related drivers.
> > > > 
> > > > The MediaTek MT7621 is a network processor integrating a dual-
> > > > core
> > > > dual-threaded MIPS 1004Kc processor running at a normal
> > > > frequency
> > > > of 880MHz.
> > > > This chip can be found in many wireless routers.
> > > 
> > > Hello Weijie,
> > > 
> > > doesn't MT7621 U-Boot need a proprietary binary for DDR training?
> > > I remember that it was required in 2016 for MqMaker WitiBoard.
> > > 
> > > Marek
> 
> Viele Grüße,
> Stefan Roese
>