[U-Boot] [PATCH 0/1] i.MX8QM ROM 7720 a1 board won't boot

[Oliver Graute <oliver.graute@kococonnector.com>]

On 19/08/19, Peng Fan wrote:
> > Subject: Re: [PATCH 0/1] i.MX8QM ROM 7720 a1 board won't boot
> > 
> > On 16/08/19, Marcel Ziswiler wrote:
> > > Hi Oliver
> > >
> > > On Fri, 2019-08-16 at 12:43 +0000, Oliver Graute wrote:
> > > > I'am currently working on the following patch to get the imx8qm-
> > > > rom7720-a1
> > >
> > > That version sounds suspiciously like it may be based on initial alpha
> > > silicon from NXP which as far as I know is not supported anywhere any
> > > more. Not even in downstream.
> > >
> > > If it has alpha silicon my suggestion is to throw it away and move on.
> > >
> > > > board working with recent u-boot v2019.07.
> > >
> > > v2019.07 has long since been released. So what you are talking about
> > > would be any future release like v2020.01 as even the v2019.10 merge
> > > window long since closed.
> > >
> > > > Unfortunaly I get no output on my
> > > > serial line.
> > >
> > > Alpha chips came with different boot ROM requiring completely
> > > different SCFW as far as I know.
> > 
> > I have to correct myself. After some investigation I can say that I have the
> > B-Silicium of imx8qm on this board. So should I rename everything from a1 to
> > b1?
> 
> Check scfw uart to see whether there is any output from scu uart.
> Make sure you using and adapt scfw to your board.

ok, there is no output on scu uart. So its broken before u-boot launch.

With nxp vendor boostream (scfw + atf + u-boot-imx) I see some output
and a little cmd line. So I have to check the stuff before u-boot first.

Best Regards,

Oliver