Problem IMX8MN booting legacy kernel and mipi display

[Michael Nazzareno Trimarchi]

Hi Tim

You are using the imx8mm. I have problems on imx8mn. It's like some
part is not implemented. Time to time power domain timeout if I
enabled
mipi pipeline

Michael

On Wed, Feb 2, 2022 at 4:54 PM Tim Harvey <tharvey at gateworks.com> wrote:
>
> On Wed, Feb 2, 2022 at 5:04 AM Michael Nazzareno Trimarchi
> <michael at amarulasolutions.com> wrote:
> >
> > Hi Adam
> >
> > On Wed, Feb 2, 2022 at 2:02 PM Adam Ford <aford173 at gmail.com> wrote:
> > >
> > > On Wed, Feb 2, 2022 at 6:24 AM Michael Nazzareno Trimarchi
> > > <michael at amarulasolutions.com> wrote:
> > > >
> > > > Hi all
> > > >
> > > > I have now able to pack those combination and all of them look ok
> > > >
> > > > - mainline uboot
> > > > - optee 3.15.0
> > > > - atf 2.5
> > > > - mainline kernel
> > > >
> > > > - mainline uboot
> > > > - optee 3.15.0
> > > > - imx-atf rel_imx_5.4.70_2.3.2
> > > > - Linux rel_imx_5.4.70_2.3.2
> > > >
> > > > I have a setup where I can test some peripherals. I can run an optee
> > > > test on both combinations
> > > > The big issue I have it's the DSIM display it's not working and
> > > > crashes the kernel using the rel_imx_5.4.70_2.3.2 nxp version. The
> > > > mipi
> > > > randomly deadlock the booting. If I don't register the mipi part it's
> > > > ok. Can someone have an idea?
> > >
> > > Are you using the  Linux rel_imx_5.4.70_2.3.2 with imx-atf rel_imx_5.4.70_2.3.2?
> > >
> > > The NXP kernel expects the NXP ATF code.  The power-domain drivers in
> > > the NXP branch make secure calls to ATF which enable/disable the
> > > power-domains which control a bunch of peripherals like DSI, CSI, USB
> > > and GPU.  If you're using the mainline ATF, I don't believe it
> > > contains the power-domain controllers, so when the Linux power-domain
> > > drivers make the secure calls, it's likely the power-domains won't
> > > change.
> >
> > - mainline uboot
> > - optee 3.15.0
> > - imx-atf rel_imx_5.4.70_2.3.2
> > - Linux rel_imx_5.4.70_2.3.2
> >
> > I have tried even to not load optee in the image but still the same
> >
> > Michael
> > >
> > > adam
> > > >
> > > > All of them can be test using a buildroot setup
> > > >
> > > > Michael
> >
>
> Michael,
>
> I have not bothered with NXP's kernel, but I do have DSIM working on
> 5.15 with a set of patches here
> https://github.com/Gateworks/linux-venice if it is helpful. I've been
> using this with a mainline U-Boot, imx-atf lf_v2.4.
>
> Tim



-- 
Michael Nazzareno Trimarchi
Co-Founder & Chief Executive Officer
M. +39 347 913 2170
michael at amarulasolutions.com
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