kernel crash with default instructions but with just HDMI connected on ucm dev kit for imx8mp

[arrow53]

@vraevsky I'm unable to boot with just HDMI connected. I don't have access to the LCD that came with the kit. Maybe I need that?

I did try to disable DSI but this didn't seem to make any difference

setenv bootargs ${bootargs} video=video=DSI-1:d

[    3.422488] imx_sec_dsim_drv 32e60000.mipi_dsi: version number is 0x1060200
[    3.429508] ------------[ cut here ]------------
[    3.429620] ili9881c-dsi 32e60000.mipi_dsi.0: supply power not found, using d
ummy regulator
[    3.434125] WARNING: CPU: 0 PID: 0 at drivers/gpu/drm/bridge/sec-dsim.c:1837 
sec_mipi_dsim_irq_handler+0x1d0/0x21c
[    3.452819] Modules linked in:
[    3.455877] CPU: 0 PID: 0 Comm: swapper/0 Not tainted 5.15.32+g11d8586843de #
1
[    3.463100] Hardware name:  /, BIOS 2021.04-compulab+g3463140881 06/08/2021
[    3.470060] pstate: 400000c5 (nZcv daIF -PAN -UAO -TCO -DIT -SSBS BTYPE=--)
[    3.477021] pc : sec_mipi_dsim_irq_handler+0x1d0/0x21c
[    3.482162] lr : __handle_irq_event_percpu+0x58/0x170
[    3.487218] sp : ffff800008003ed0
[    3.490530] x29: ffff800008003ed0 x28: ffff800009ec2940 x27: ffff80000996a140
[    3.497669] x26: ffff800009936b08 x25: ffff80000a01c27e x24: ffff0001004ef200
[    3.504807] x23: 0000000000000031 x22: ffff800008003f74 x21: 0000000000000000
[    3.511948] x20: ffff0001017e4880 x19: 0000000000000000 x18: 0000000000000003
[    3.519087] x17: ffff80013193a000 x16: ffff800008004000 x15: 0000000000004000
[    3.526226] x14: 00000000000002e9 x13: 0000000000000001 x12: 0000000000000040
[    3.533364] x11: ffff0001020006d8 x10: ffff0001020006da x9 : ffff000100020068
[    3.540505] x8 : ffff0001020004b8 x7 : 0000000000000000 x6 : ffff000102000640
[    3.545401] ili9881c-dsi 32e60000.mipi_dsi.0: Couldn't get panel reset pin av
ailable 1
[    3.547644] x5 : ffff000102000490 x4 : ffff80013193a000 x3 : ffff800008003f80
[    3.555577] ili9881c-dsi: probe of 32e60000.mipi_dsi.0 failed with error -110
[    3.562688] x2 : ffff8000088a6014 x1 : 0000000000000000 x0 : 0000000000000000
[    3.569974] [drm:drm_bridge_attach] *ERROR* failed to attach bridge /soc@0/bu
s@32c00000/mipi_dsi@32e60000 to encoder DSI-40: -19
[    3.576957] Call trace:
[    3.576959]  sec_mipi_dsim_irq_handler+0x1d0/0x21c
[    3.576966]  __handle_irq_event_percpu+0x58/0x170
[    3.588539] imx_sec_dsim_drv 32e60000.mipi_dsi: Failed to attach bridge: 32e6
0000.mipi_dsi
[    3.590968]  handle_irq_event+0x64/0x140
[    3.595823] imx_sec_dsim_drv 32e60000.mipi_dsi: failed to bind sec dsim bridg
e: -517
[    3.600458]  handle_fasteoi_irq+0xa8/0x1fc
[    3.624465]  handle_domain_irq+0x64/0x94
[    3.628388]  gic_handle_irq+0xbc/0x140
[    3.632139]  call_on_irq_stack+0x2c/0x60
[    3.636063]  do_interrupt_handler+0x54/0x60
[    3.640249]  el1_interrupt+0x30/0x80
[    3.643827]  el1h_64_irq_handler+0x1c/0x2c
[    3.647923]  el1h_64_irq+0x78/0x7c
[    3.651327]  cpuidle_enter_state+0x134/0x2f4
[    3.655598]  cpuidle_enter+0x3c/0x54
[    3.659173]  do_idle+0x214/0x29c
[    3.662403]  cpu_startup_entry+0x28/0x80
[    3.666325]  rest_init+0xe8/0x100
[    3.669641]  arch_call_rest_init+0x14/0x20
[    3.673739]  start_kernel+0x61c/0x65c
[    3.677403]  __primary_switched+0xc0/0xc8
[    3.681413] ---[ end trace 44a9385ede76b30b ]---

[vraevsky]

@arrow53 please try using hdmi | headless dtb for such configurations.