[PATCH] arm: dts: imx8mn-beacon-kit-u-boot: Fix broken booting

[Adam Ford]

On Sun, Jul 31, 2022 at 12:36 PM Adam Ford <aford173 at gmail.com> wrote:
>
> On Sun, Jul 31, 2022 at 12:28 PM Michael Nazzareno Trimarchi
> <michael at amarulasolutions.com> wrote:
> >
> > Hi Adam
> >
> > On Sun, Jul 31, 2022 at 7:16 PM Adam Ford <aford173 at gmail.com> wrote:
> > >
> > > When the imx8mm.dtsi file was pulled in from Linux, the UARTs
> > > were moved into an spba sub-node which wasn't being included
> > > in the SPL device tree.  This meant the references to the UART
> > > weren't being handled properly and when booting the system would
> > > constantly reboot.  Fix this by adding the spba node to the spl
> > > device tree to restore normal booting.
> > >
> > > Fixes: 4e5114daf9eb ("imx8mn: synchronise device tree with linux")
> > > Signed-off-by: Adam Ford <aford173 at gmail.com>
> > >
> > > diff --git a/arch/arm/dts/imx8mn-beacon-kit-u-boot.dtsi b/arch/arm/dts/imx8mn-beacon-kit-u-boot.dtsi
> > > index 5f83952402..0efa6862eb 100644
> > > --- a/arch/arm/dts/imx8mn-beacon-kit-u-boot.dtsi
> > > +++ b/arch/arm/dts/imx8mn-beacon-kit-u-boot.dtsi
> > > @@ -106,6 +106,10 @@
> > >         u-boot,off-on-delay-us = <20000>;
> > >  };
> > >
> > > +&spba1 {
> > > +       u-boot,dm-spl;
> > > +};
> > > +
> > >  &uart2 {
> > >         u-boot,dm-spl;
> > >  };
> > > --
> > > 2.34.1
> > >
> >
> > Are you going to include it in imx8mn-u-boot.dtsi or do we need to
> > patch every single board?
>
> This is a temporary fix until I generate the common imx8mn-u-boot.dtsi
> which will include this.

I was hoping to finish this this afternoon, but a family emergency
came up.  I'm going to try to finish it later tonight or tomorrow.
It's taking a bit longer because there are some boards with DDR4,
LPDDR4 and DDR3.  I don't have most of them, but I plan to at least
generate a flash.bin file before posting it.

adam
>
> >
> > Michael