IMX8MN MIPI DSI icn 6211 issue

topphysician — Wed, 09 Oct 2024 11:46:55 GMT

Hi,

I am working with imx8mn with kernel 6.1 where i try to use mipi-dsi with icn6211 bridge to rgb panel. The boot keeps crashing

In dts i added panel-connector and bridge in mipi-node:

panel-connector { compatible = "custom,tl021wvc02", "simple-panel"; port { panel_in: endpoint { remote-endpoint = <&bridge_out_dsi>; }; }; }; ........ &mipi_dsi { status = "okay"; bridge@0 { #address-cells = <1>; #size-cells = <0>; compatible = "chipone,icn6211"; // Update with correct compatible string if needed reg = <0>; data-lanes = <4>; pinctrl-0 = <&pinctrl_mipi_bridge>; enable-gpios = <&gpio2 16 GPIO_ACTIVE_HIGH>; video-mode = <0>; status = "okay"; port@1 { reg = <1>; bridge_out_dsi: endpoint { remote-endpoint = <&panel_in>; }; }; }; };

I also tried with port connecting bridge to mipi with no change.

The boot is stopped with crash, TRACE indicate custom prints.

Also appending whole boot.log here is tail of it:

[ 1.805474][ T9] TRACE: drm_bridge_attach [ 1.831042][ T9] TRACE: sec_mipi_dsim_bind: bridge_bind_end [ 1.836885][ T9] imx-drm 32c00000.bus:display-subsystem: bound 32e10000.dsi_controller (ops imx_sec_dsim_ops) [ 1.848060][ T9] [drm] Initialized imx-drm 1.0.0 20120507 for 32c00000.bus:display-subsystem on minor 0 [ 1.857785][ T9] TRACE: sec_mipi_dsim_connector_get_modes [ 1.857789][ T9] TRACE: drm_panel_get_modes panel: fffffffffffffdfb, connector: (____ptrval____) [ 1.872524][ T9] Unable to handle kernel paging request at virtual address fffffffffffffe0b [ 1.881145][ T9] Mem abort info: [ 1.884640][ T9] ESR = 0x0000000096000004 [ 1.889090][ T9] EC = 0x25: DABT (current EL), IL = 32 bits [ 1.895104][ T9] SET = 0, FnV = 0 [ 1.898860][ T9] EA = 0, S1PTW = 0 [ 1.902702][ T9] FSC = 0x04: level 0 translation fault [ 1.908281][ T9] Data abort info: [ 1.911861][ T9] ISV = 0, ISS = 0x00000004 [ 1.916397][ T9] CM = 0, WnR = 0 [ 1.920068][ T9] swapper pgtable: 4k pages, 48-bit VAs, pgdp=000000004220d000 [ 1.927471][ T9] [fffffffffffffe0b] pgd=0000000000000000, p4d=0000000000000000 [ 1.934970][ T9] Internal error: Oops: 0000000096000004 [#1] PREEMPT SMP [ 1.941934][ T9] Modules linked in: [ 1.945688][ T9] CPU: 2 PID: 9 Comm: kworker/u8:0 Not tainted 6.1.36-g01969ba8309e-dirty #227 0bddf5129db076e92bb5ef66eef20d492409d3fe [ 1.958037][ T9] Hardware name: Variscite VAR-SOM-MX8M-NANO on Symphony-Board (DT) [ 1.965869][ T9] Workqueue: events_unbound deferred_probe_work_func [ 1.972410][ T9] pstate: 60000005 (nZCv daif -PAN -UAO -TCO -DIT -SSBS BTYPE=--) [ 1.980069][ T9] pc : drm_panel_get_modes+0x38/0x70 [ 1.985216][ T9] lr : drm_panel_get_modes+0x38/0x70 [ 1.990359][ T9] sp : ffff8000080a36b0 [ 1.994369][ T9] x29: ffff8000080a36b0 x28: ffff70b9c42e7180 x27: 0000000000000780 [ 2.002207][ T9] x26: 0000000000000023 x25: ffffa10c81767d48 x24: ffff70b9c49ef800 [ 2.010043][ T9] x23: 00000000fffffffd x22: ffff70b9c49f1420 x21: 0000000000000000 [ 2.017880][ T9] x20: ffff70b9c49f10a0 x19: fffffffffffffdfb x18: ffffffffffffffff [ 2.025717][ T9] x17: 28203a726f746365 x16: 6e6e6f63202c6266 x15: 6466666666666666 [ 2.033555][ T9] x14: 666666666666203a x13: ffffa10c814833d0 x12: 0000000000000387 [ 2.041391][ T9] x11: 000000000000012d x10: ffffa10c814db3d0 x9 : ffffa10c814833d0 [ 2.049228][ T9] x8 : 00000000ffffefff x7 : ffffa10c814db3d0 x6 : 80000000fffff000 [ 2.057066][ T9] x5 : 000000000000bff4 x4 : 0000000000000000 x3 : 0000000000000000 [ 2.064902][ T9] x2 : 0000000000000000 x1 : ffff70b9c00d8000 x0 : 000000000000004f [ 2.072740][ T9] Call trace: [ 2.075882][ T9] drm_panel_get_modes+0x38/0x70 [ 2.080678][ T9] sec_mipi_dsim_connector_get_modes+0x30/0x4c [ 2.086692][ T9] drm_helper_probe_single_connector_modes+0x1c4/0x510 [ 2.093399][ T9] drm_client_modeset_probe+0x1fc/0x1190 [ 2.098889][ T9] __drm_fb_helper_initial_config_and_unlock+0x44/0x540 [ 2.105682][ T9] drm_fbdev_client_hotplug+0x150/0x210 [ 2.111085][ T9] drm_fbdev_generic_setup+0xb4/0x194 [ 2.116313][ T9] imx_drm_bind+0x21c/0x270 [ 2.120674][ T9] try_to_bring_up_aggregate_device+0x1dc/0x2d0 [ 2.126774][ T9] __component_add+0xa4/0x190 [ 2.131307][ T9] component_add+0x14/0x20 [ 2.135580][ T9] lcdif_crtc_probe+0x4c/0xb0 [ 2.140118][ T9] platform_probe+0x68/0xc0 [ 2.144480][ T9] really_probe+0xc0/0x3dc [ 2.148753][ T9] __driver_probe_device+0x7c/0x160 [ 2.153807][ T9] driver_probe_device+0x3c/0x110 [ 2.158688][ T9] __device_attach_driver+0xbc/0x160 [ 2.163830][ T9] bus_for_each_drv+0x7c/0xd4 [ 2.168367][ T9] __device_attach+0x9c/0x1c0 [ 2.172900][ T9] device_initial_probe+0x14/0x20 [ 2.177782][ T9] bus_probe_device+0x9c/0xa4 [ 2.182316][ T9] deferred_probe_work_func+0x94/0xe4 [ 2.187544][ T9] process_one_work+0x1d4/0x330 [ 2.192255][ T9] worker_thread+0x220/0x430 [ 2.196703][ T9] kthread+0x108/0x10c [ 2.200630][ T9] ret_from_fork+0x10/0x20 [ 2.204909][ T9] Code: b00088c0 aa1303e1 91246000 942172d5 (f9400a60) [ 2.211699][ T9] ---[ end trace 0000000000000000 ]---

Re: IMX8MN MIPI DSI icn 6211 issue

Chavira — Wed, 09 Oct 2024 22:05:11 GMT

Hi @topphysician!

Thank you for contacting NXP Support!

I tried with our iMX8MN EVK and configuring the MIPI DSI adding the device tree the icn6211 I didn't see any error like the error that you have.

I don't have the display but that error looks like any miss configuration in the drm driver or in the mipi_dsi node.

For this case I recommend to contacting Variscite support since we don't provide the software for the board that you are using.

Best Regards!

Chavira

Re: IMX8MN MIPI DSI icn 6211 issue

topphysician — Thu, 17 Oct 2024 09:13:49 GMT

At the end I took bananapi icn6211 display: https://patchwork.kernel.org/project/linux-arm-kernel/patch/20191003064527.15128-7-jagan@amarulasolutions.com/
and changed it to fit my needs, where if the display will change: the uboot will change dts with different timings.

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IMX8MN MIPI DSI icn 6211 issue

Re: IMX8MN MIPI DSI icn 6211 issue

Re: IMX8MN MIPI DSI icn 6211 issue