Nevermind on BeagleBoard-DeviceTree.  I just compared the kernel and
BeagleBoard-DeviceTree;
they are at parity.  BeagleBoard-DeviceTree is not needed.  The thing that
was throwing me off what the older kernel/dt.

I'll submit a patch for rolling the kernel forward.

On Thu, Oct 5, 2023 at 8:08 AM Joel Winarske via lists.yoctoproject.org
<[email protected]> wrote:

> I'm narrowing in on the issue.
>
> I have a BeagleBoard.org OS image release where I can see PowerVR running,
> and PCIe (WiFi/BT) works:
> * bbai64-emmc-flasher-debian-11.7-xfce-edgeai-arm64-2023-09-02-10gb.img
> Rescue option 1 (default image panics when booting with PCIe populated):
> [    0.000000] Linux version 5.10.168-ti-arm64-r111 (voodoo@AM69-SK-32g-01)
> (gcc (Debian 10.2.1-6) 10.2.1u3
>
> These images use a device tree from a different repo than the ti-kernel
> repo:
>     kernel: https://github.com/beagleboard/linux.git
>     dt:
> https://git.beagleboard.org/beagleboard/BeagleBoard-DeviceTrees
>
> Dumping the DT from Yocto linux-bb and BeagleBoard.org the output is not
> the same.
>
> Proposed minimum changes:
> * add option for BeagleBoard-DeviceTree
> * update kernel versions in linux-bb
> * update PowerVR version to match kernel/DT
>
> Thoughts?
>
> On Mon, Sep 25, 2023 at 11:56 AM Joel Winarske via lists.yoctoproject.org
> <[email protected]> wrote:
>
>> Update on issue.
>>
>> I can boot a kirkstone core-image-base (headless) without any issue.
>>
>> Randolph at TI has indicated the panic is related to an outdated gpu
>> definition in DT.  The gpu DT def defines two power domains, only one is
>> required.  I have not yet successfully confirmed this change.
>>
>>
>>
>> On Wed, Sep 20, 2023 at 5:08 PM Joel Winarske via lists.yoctoproject.org
>> <[email protected]> wrote:
>>
>>> Today's limited progress:
>>>
>>> 1. U-Boot from eMMC is used by default.  Shipping devices have outdated
>>> U-Boot.
>>> 2. Rule out U-Boot, and use Yocto built U-Boot by pressing RST + BOOT,
>>> wait, release RST, then release BOOT.  Boot flow will use all boot bits
>>> from the SD card with this approach.
>>> 3. Update `linux-bb.org_git.bb` to use tip of tree:
>>> # 5.10.168 version for 32-bit
>>> SRCREV:armv7a = "0f40ca5e749e9176ad4ea30c68be4fb2340647db"
>>> PV:armv7a = "5.10.168+git${SRCPV}"
>>> BRANCH:armv7a = "5.10.168-ti-r71"
>>>
>>> # 5.10.168 version for 64-bit
>>> SRCREV:aarch64 = "ac2750dbf3a3b9078feff995e6754d5c5f609c19"
>>> PV:aarch64 = "5.10.168+git${SRCPV}"
>>> BRANCH:aarch64 = "v5.10.168-ti-arm64-r110"
>>>
>>>
>>>
>>> Updating kernel has no impact on kernel panic:
>>>
>>> [    6.621063] pvrsrvkm: loading out-of-tree module taints kernel.
>>> [    6.637510] PVR_K:  251: Device: 4e20000000.gpu
>>> [    6.642337] SError Interrupt on CPU0, code 0xbf000000 -- SError
>>> [    6.642339] CPU: 0 PID: 251 Comm: systemd-udevd Tainted: G
>>> O      5.10.168+ #1
>>> [    6.642340] Hardware name: BeagleBoard.org BeagleBone AI-64 (DT)
>>> [    6.642341] pstate: 60000005 (nZCv daif -PAN -UAO -TCO BTYPE=--)
>>> [    6.642343] pc : _RGXReadBVNCFromReg.isra.0+0x20/0x140 [pvrsrvkm]
>>> [    6.642343] lr : RGXBvncInitialiseConfiguration+0x274/0x9c0 [pvrsrvkm]
>>> [    6.642344] sp : ffff8000143db740
>>> [    6.642345] x29: ffff8000143db740 x28: ffff8000091e4548
>>> [    6.642349] x27: 0000000000000000 x26: ffff8000143db7a8
>>> [    6.642351] x25: ffff0008132da000 x24: ffff000813c741a0
>>> [    6.642353] x23: 0000000000000000 x22: ffff8000091ed000
>>> [    6.642355] x21: ffff000813c74008 x20: ffff8000091947c0
>>> [    6.642357] x19: 0000000000000000 x18: ffff800009142e74
>>> [    6.642359] x17: 000000ffc0000000 x16: ffff8000091431e0
>>> [    6.642361] x15: ffff800009142e60 x14: ffff800009140dd0
>>> [    6.642363] x13: ffff80000914c124 x12: 0000000000000000
>>> [    6.642365] x11: ffff000813c74008 x10: 0000000000000020
>>> [    6.642367] x9 : 0000000000000000 x8 : 0000000000000024
>>> [    6.642369] x7 : 0000000000000000 x6 : ffff800012500000
>>> [    6.642371] x5 : ffff8000143db7b0 x4 : ffff8000143db7ac
>>> [    6.642373] x3 : ffff8000143db7a8 x2 : ffff8000143db7a4
>>> [    6.642375] x1 : 0000000000000000 x0 : ffff000813c74008
>>> [    6.642377] Kernel panic - not syncing: Asynchronous SError Interrupt
>>>
>>>
>>>
>>>
>>>
>>
>>
>>
> 
>
>
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