[PATCH v1 21/26] imx8mn: synchronise device tree with linux

[Francesco Dolcini]

Hello Adam,

On Fri, Aug 12, 2022 at 07:49:06AM -0500, Adam Ford wrote:
> On Wed, Aug 3, 2022 at 8:02 AM Marcel Ziswiler
> <marcel.ziswiler at toradex.com> wrote:
> > On Sun, 2022-07-31 at 11:58 -0500, Adam Ford wrote:
> > > On Thu, Jul 21, 2022 at 8:44 AM Marcel Ziswiler <marcel at ziswiler.com> wrote:
> > > >
> > > > From: Marcel Ziswiler <marcel.ziswiler at toradex.com>
> > > >
> > > > Synchronise device tree with linux v5.19-rc5.
> > > >
> > > > Signed-off-by: Marcel Ziswiler <marcel.ziswiler at toradex.com>
> > >
> > > For what it's worth to others who may have been impacted,  this patch
> > > broke my nano booting because the imx8mn.dtsi now has the UART's as
> > > subnodes to spba1 which wasn't being included in SPL's device tree.
> > > It's likely to impact others who are booting with DM_SERIAL enabled on
> > > their Nano.
> >
> > Sorry about that.
> >
> > > To fix, I had to add a small line of code to my
> > > imx8mn-beacon-kit-u-boot.dtsi file with the following:
> > >
> > > &spba1 {
> > >        u-boot,dm-spl;
> > > };
> > >
> > > With that, my board boots again.  If anyone else is using DM_SERIAL
> > > and having issues no longer starting, give that a try.
> > >
> > > Since there are few  nano boards with common -u-boot.dtsi entries, it
> > > seems like it makes sense to have a common imx8mn-u-boot.dtsi file
> > > like we do for Mini and Plus.  I'll try to work on that as I have
> > > time. (hopefully today)
> >
> > Thanks for your help in correcting this.
> 
> Have you seen the patch series I posted at [1]?
> I know Tim Harvey replied  'tested-by' to the cover letter.  Might you
> have a chance to test it?

There are no i.MX8M Nano Toradex products (as of today), no way to test
unfortunately.

Francesco