Linux/AM3358: Kernel panic

Hi Ken,

It seems that there is a missing clock (NOT enabled upon IP initialization) in your system:
[ 0.001164] clocksource_probe: no matching clocksources found
[ 0.852163] wkup_m3_ipc 44e11324.wkup_m3_ipc: could not get rproc handle
[ 0.883685] Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa30e05c

Share the full bootlog & your dts files.

Best Regards,
Yordan

The crash is not easy to see.   It occurs for testing the reboot cycles more than 1000 times.  Please find the full boot log.

U-Boot SPL 2017.07-rc1-dirty (Mar 06 2018 - 16:56:28)
Trying to boot from MMC2

U-Boot 2017.07-rc1-dirty (Mar 06 2018 - 16:56:28 +0800)

CPU  : AM335X-GP rev 2.1
I2C:   ready
DRAM:  1 GiB
No match for driver 'omap_hsmmc'
No match for driver 'omap_hsmmc'
Some drivers were not found
Reset Source: Global warm SW reset has occurred.
Reset Source: Power-on reset has occurred.
hihi LCDBackLightEnable
MMC:   OMAP SD/MMC: 0, OMAP SD/MMC: 1
Using default environment

Board: BeagleBone Black
<ethaddr> not set. Validating first E-fuse MAC
BeagleBone Black:
BeagleBone: cape eeprom: i2c_probe: 0x54:
BeagleBone: cape eeprom: i2c_probe: 0x55:
BeagleBone: cape eeprom: i2c_probe: 0x56:
BeagleBone: cape eeprom: i2c_probe: 0x57:
Detect usb storage.
starting USB...
USB0:   scanning bus 0 for devices... Error: Cannot find high speed parent of usb-1 device
unable to get device descriptor (error=-71)
Error: Cannot find high speed parent of usb-1 device
unable to get device descriptor (error=-71)
3 USB Device(s) found
       scanning usb for storage devices... Device NOT ready
   Request Sense returned 02 3A 00
0 Storage Device(s) found
No udisk found.
Net:   eth0: MII MODE
cpsw
Press SPACE to abort autoboot in 2 seconds
board_name=[A335BNLT] ...
board_rev=[00C0] ...
Card did not respond to voltage select!
mmc_init: -95, time 13
Card did not respond to voltage select!
mmc_init: -95, time 12
Card did not respond to voltage select!
mmc_init: -95, time 13
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
gpio: pin 53 (gpio 53) value is 1
Card did not respond to voltage select!
mmc_init: -95, time 13
Card did not respond to voltage select!
mmc_init: -95, time 13
switch to partitions #0, OK
mmc1(part 0) is current device
Scanning mmc 1:1...
gpio: pin 56 (gpio 56) value is 0
gpio: pin 55 (gpio 55) value is 0
gpio: pin 54 (gpio 54) value is 0
gpio: pin 53 (gpio 53) value is 1
switch to partitions #0, OK
mmc1(part 0) is current device
gpio: pin 54 (gpio 54) value is 1
Checking for: /uEnv.txt ...
Checking for: /boot.scr ...
Checking for: /boot/boot.scr ...
Checking for: /boot/uEnv.txt ...
gpio: pin 55 (gpio 55) value is 1
3230 bytes read in 22 ms (142.6 KiB/s)
Loaded environment from /boot/uEnv.txt
debug: [dtb=am335x-boneblack-emmc-overlay.dtb] ...
Using: dtb=am335x-boneblack-emmc-overlay.dtb ...
Checking if uname_r is set in /boot/uEnv.txt...
gpio: pin 56 (gpio 56) value is 1
Running uname_boot ...
loading /boot/vmlinuz-4.4.68+ ...
8500464 bytes read in 560 ms (14.5 MiB/s)
uboot_overlays: dtb=am335x-boneblack-emmc-overlay.dtb in /boot/uEnv.txt, unable to use [uboot_base_dtb=am335x-boneblack-uboot.dtb] ...
loading /boot/dtbs/4.4.68+/am335x-boneblack-emmc-overlay.dtb ...
54478 bytes read in 39 ms (1.3 MiB/s)
uboot_overlays: [fdt_buffer=0x60000] ...
uboot_overlays: loading /lib/firmware/AM335X-20-00A0.dtbo ...
378 bytes read in 272 ms (1000 Bytes/s)
uboot_overlays: loading /lib/firmware/BB-BONE-ACR-00A0.dtbo ...
5050 bytes read in 113 ms (43 KiB/s)
uboot_overlays: loading /lib/firmware/BB-BONE-LCD4-01-00A0.dtbo ...
4735 bytes read in 45 ms (102.5 KiB/s)
uboot_overlays: loading /lib/firmware/BB-I2C2-00A0.dtbo ...
940 bytes read in 257 ms (2.9 KiB/s)
uboot_overlays: loading /lib/firmware/BB-BONE-AUDI-01-00A0.dtbo ...
2818 bytes read in 139 ms (19.5 KiB/s)
uboot_overlays: loading /lib/firmware/BB-UART1-00A0.dtbo ...
983 bytes read in 53 ms (17.6 KiB/s)
uboot_overlays: loading /lib/firmware/BB-UART4-00A0.dtbo ...
883 bytes read in 54 ms (15.6 KiB/s)
uboot_overlays: loading /lib/firmware/BB-ADC-00A0.dtbo ...
695 bytes read in 121 ms (4.9 KiB/s)
uboot_overlays: loading /lib/firmware/BB-SPI0-00A0.dtbo ...
1856 bytes read in 49 ms (36.1 KiB/s)
uboot_overlays: uboot loading of [/lib/firmware/BB-BONE-eMMC1-01-00A0.dtbo] disabled by /boot/uEnv.txt [disable_uboot_overlay_emmc=1]...
uboot_overlays: uboot loading of [/lib/firmware/BB-HDMI-TDA998x-00A0.dtbo] disabled by /boot/uEnv.txt [disable_uboot_overlay_video=1]...
uboot_overlays: loading /lib/firmware/BB-ADC-00A0.dtbo ...
695 bytes read in 121 ms (4.9 KiB/s)
uboot_overlays: loading /lib/firmware/AM335X-PRU-UIO-00A0.dtbo ...
853 bytes read in 41 ms (19.5 KiB/s)
uboot_overlays: cape universal disabled, external cape enabled or detected...
loading /boot/initrd.img-4.4.68+ ...
5536981 bytes read in 366 ms (14.4 MiB/s)
debug: [console=ttyO0,115200n8 capemgr.disable_partno=BB-BONELT-HDMI,BB-BONELT-HDMIN bone_capemgr.uboot_capemgr_enabled=1 root=UUID=cd733482-54fb-45ae-8cf4-e7e10910ad08 ro rootfstype=ext4 rootwait coherent_pool=1M net.ifnames=0 quiet vt.global_cursor_default=0 kdbus=0] ...
debug: [bootz 0x82000000 0x88080000:547cd5 88000000] ...
## Flattened Device Tree blob at 88000000
   Booting using the fdt blob at 0x88000000
   Loading Ramdisk to 8fab8000, end 8ffffcd5 ... OK
   reserving fdt memory region: addr=88000000 size=70000
   Loading Device Tree to 8fa45000, end 8fab7fff ... OK

Starting kernel ...

[    0.001164] clocksource_probe: no matching clocksources found
[    0.852163] wkup_m3_ipc 44e11324.wkup_m3_ipc: could not get rproc handle
[    0.883685] Unhandled fault: external abort on non-linefetch (0x1028) at 0xfa30e05c
[    0.883691] pgd = c0004000
[    0.883700] [fa30e05c] *pgd=48211452(bad)
[    0.883716] Internal error: : 1028 [#1] SMP ARM
[    0.883725] Modules linked in:
[    0.883736] CPU: 0 PID: 1 Comm: swapper/0 Not tainted 4.4.68+ #4
[    0.883739] Hardware name: Generic AM33XX (Flattened Device Tree)
[    0.883744] task: ee8d8000 ti: ee8d6000 task.ti: ee8d6000
[    0.883761] PC is at tilcdc_crtc_irq+0x4c/0x2ac
[    0.883768] LR is at tilcdc_irq+0x20/0x24
[    0.883775] pc : [<c0636b6c>]    lr : [<c06387a4>]    psr: 60000193
[    0.883775] sp : ee8d7390  ip : ee8d73d8  fp : ee8d73d4
[    0.883778] r10: ee8d6000  r9 : c0a1b57c  r8 : ede93000
[    0.883783] r7 : eec17610  r6 : ede93810  r5 : ee89cba8  r4 : c0f85ac8
[    0.883786] r3 : fa30e05c  r2 : 0000005c  r1 : ede93000  r0 : ede93810
[    0.883793] Flags: nZCv  IRQs off  FIQs on  Mode SVC_32  ISA ARM  Segment none
[    0.883798] Control: 10c5387d  Table: 80004019  DAC: 00000051
[    0.883802] Process swapper/0 (pid: 1, stack limit = 0xee8d6218)
[    0.883807] Stack: (0xee8d7390 to 0xee8d8000)
[    0.883815] 7380:                                     00000000 00000006 0de57a00 00000000
[    0.883824] 73a0: 00000015 dc8ba644 00117049 edeb5580 ee89cba8 00000000 00000000 00000013
[    0.883833] 73c0: c0a1b57c ee8d6000 ee8d73e4 ee8d73d8 c06387a4 c0636b2c ee8d743c ee8d73e8
[    0.883842] 73e0: c00a7f8c c0638790 ee8d745c ee8d73f8 c0835d60 c0a13f84 c1056082 ee89cb40
[    0.883850] 7400: c1056408 c105641c 00000000 00000000 00000004 ee89cb40 ee89cba8 00000000
[    0.883859] 7420: 00000000 ee836000 00000008 c0f85140 ee8d745c ee8d7440 c00a81e4 c00a7eec
[    0.883868] 7440: ee89cb40 ee89cb50 00000000 00000000 ee8d7474 ee8d7460 c00aba74 c00a819c
[    0.883876] 7460: c0f7e758 00000013 ee8d7484 ee8d7478 c00a7530 c00ab9c8 ee8d74ac ee8d7488
[    0.883885] 7480: c00a783c c00a7508 c112a340 60000013 ffffffff ee8d74fc 00000000 00000008
[    0.883894] 74a0: ee8d74c4 ee8d74b0 c0009500 c00a77dc c0a13f84 60000013 ee8d7524 ee8d74c8
[    0.883903] 74c0: c0a14714 c00094c8 c0f93358 a0000013 dc8ba644 00000007 00000000 c0f93358
[    0.883911] 74e0: a0000013 c0f85140 00000000 00000008 c0f85140 ee8d7524 ee8d7528 ee8d7518
[    0.883920] 7500: c002fc30 c0a13f84 60000013 ffffffff 00000051 c002fc30 ee8d7544 ee8d7528
[    0.883929] 7520: c002fc30 c0a13f60 00000001 00000000 ee9f9cc0 c0f85140 ee8d7564 ee8d7548
[    0.883938] 7540: c00312f4 c002fbf8 ee9fe210 ee9fe210 c003134c c0f85140 ee8d757c ee8d7568
[    0.883946] 7560: c0031378 c00312a8 ee9fe210 ee9fe210 ee8d7594 ee8d7580 c064df94 c0031358
[    0.883955] 7580: ee9fe210 ee9fe210 ee8d75b4 ee8d7598 c064e010 c064df58 ee9fe210 0000000c
[    0.883964] 75a0: c003134c c0f85140 ee8d760c ee8d75b8 c064e5fc c064dfec 60000093 c0f85ac8
[    0.883973] 75c0: c008cdac ee8d6000 fa30e000 c008c4e0 ee8d760c ee8d75e0 c008c4e0 dc8ba644
[    0.883981] 75e0: 00000000 ee9fe210 00000000 ee9fe274 00000004 fa30e000 fa30e000 fa30e000
[    0.883990] 7600: ee8d7634 ee8d7610 c064edd0 c064e4d8 ee9fe210 00000004 ee9fe274 60000013
[    0.883999] 7620: fa30e000 fa30e000 ee8d7654 ee8d7638 c064ef58 c064ec04 ede93000 ede93810
[    0.884008] 7640: c0f85ac8 06800080 ee8d76cc ee8d7658 c06369b8 c064eee4 024000c0 000005cd
[    0.884017] 7660: eec176c0 eec170c0 ede93000 ede931e4 00000004 00000008 0230ff00 fa30e000
[    0.884026] 7680: 0000000a 00000004 fa30e000 eec170c0 c05ff8bc 00000018 00000020 dc8ba644
[    0.884034] 76a0: c0f85ac8 c0636548 ede93810 ede931f0 c0f85ac8 eec170c0 eec17cc0 ede93000
[    0.884043] 76c0: ee8d78bc ee8d76d0 c05d86a8 c0636554 00000000 00000000 ef6c33c0 c112f7cc
[    0.884052] 76e0: ede93810 ede93864 00000000 00000000 ede93924 00000000 00000000 00000000
[    0.884060] 7700: 00000000 c0a80138 0378a991 00000000 00000000 00000000 00000000 00000000
[    0.884068] 7720: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884076] 7740: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884084] 7760: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884092] 7780: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884100] 77a0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884108] 77c0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884116] 77e0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884124] 7800: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884132] 7820: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884140] 7840: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884148] 7860: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884156] 7880: 00000000 00000000 00000000 dc8ba644 ee8d78bc ede931d8 edeb55c0 ede931e4
[    0.884165] 78a0: c112f7cc ede931f0 edeb5a00 ede93810 ee8d7934 ee8d78c0 c05d9408 c05d840c
[    0.884174] 78c0: 00000000 c0f85ac8 ee8d78fc c01b5088 c0d09e4c ede931f0 00000000 c0a80138
[    0.884182] 78e0: edeb5a00 c0d09e0c c0d09e2c ede93810 00000000 00000000 00000000 edee6800
[    0.884191] 7900: 00000001 ede93000 00000000 eec17f00 ede93810 00000001 00000000 edeb55c0
[    0.884199] 7920: 00000000 00000000 ee8d7954 ee8d7938 c05f7cec c05d8a28 00000028 edeb6c00
[    0.884208] 7940: 00000001 00000000 ee8d799c ee8d7958 c05e53a4 c05f7c90 ee8d7984 ee8d7968
[    0.884217] 7960: c0609e40 c060a038 edeb59c0 ede93000 ede93000 edeb6c00 edee6000 ede93000
[    0.884226] 7980: 00000000 c1009740 edeb7400 ee836400 ee8d79bc ee8d79a0 c05e7000 c05e52ec
[    0.884234] 79a0: 00000000 edee6000 c112ab0c 00000000 ee8d79d4 ee8d79c0 c05e7088 c05e6fcc
[    0.884244] 79c0: ee836400 edee6000 ee8d7a34 ee8d79d8 c0564224 c05e7054 00000000 ee836400
[    0.884253] 79e0: ee8d7a1c 00000022 0000003c c112d180 c112cb04 00000022 0000003c 00000001
[    0.884261] 7a00: 00000000 00000000 c0d00be0 ee836400 00000000 ee836514 c112d194 c0d00be0
[    0.884270] 7a20: 00000000 ee836400 ee8d7a54 ee8d7a38 c05b4bb8 c0563d0c c0a5f408 c112d084
[    0.884279] 7a40: 00000000 c112d194 ee8d7aac ee8d7a58 c05b6450 c05b4af4 c100e20c 00000000
[    0.884287] 7a60: c112d078 00000001 c0d07a3c c10b6114 00000000 0000003e 00000000 00000001
[    0.884295] 7a80: ee8d7ab8 c0a5f408 00000000 00000000 00000000 0000003e 00000001 c112d094
[    0.884304] 7aa0: ee8d7af4 ee8d7ab0 c05b6adc c05b6288 c100e20c c0d07a98 00000001 ee8d7ac8
[    0.884313] 7ac0: c0240fe4 c112d68c c0f85ac8 c1009740 c112cb04 edee6000 c112cb04 00000000
[    0.884322] 7ae0: c112c928 edee600c ee8d7b0c ee8d7af8 c05642e4 c05b6958 c1009740 ee8d7bdc
[    0.884330] 7b00: ee8d7b4c ee8d7b10 c0564fd4 c056426c edeb4af0 edee6000 ee8d7b3c ee8d7b28
[    0.884339] 7b20: c0242954 ffffffff ee8d7bdc 00000005 00000000 00000000 c112c928 edee600c
[    0.884348] 7b40: ee8d7b74 ee8d7b50 c0066d10 c0564838 00000005 c1009c40 ee8d7bdc ffffffff
[    0.884356] 7b60: 00000000 c112c928 ee8d7b9c ee8d7b78 c006716c c0066cc8 00000000 edee622c
[    0.884365] 7b80: c0f87690 edee6000 c0f85ac8 c0f87690 ee8d7bb4 ee8d7ba0 c00671ac c0067120
[    0.884374] 7ba0: 00000000 ee8d7bb0 ee8d7bc4 ee8d7bb8 c056bb14 c0067190 ee8d7c4c ee8d7bc8
[    0.884382] 7bc0: c056dba4 c056baf8 c0d01490 00000000 00000000 edee622c 00000000 edee6000
[    0.884390] 7be0: 00000000 00000000 00000000 000001e0 00000110 00000000 00000000 00000000
[    0.884399] 7c00: 00000000 00000000 00000000 00000000 00000000 00000000 00000020 dc8ba644
[    0.884408] 7c20: c0f85ac8 edeb6c00 edee6000 00000001 c0f85ac8 c10151e8 edeb55e8 00000800
[    0.884417] 7c40: ee8d7ca4 ee8d7c50 c05e7378 c056d9e4 ede9312c 00000020 ede93000 000001e0
[    0.884425] 7c60: 00000110 000001e0 00000110 00000020 00000018 dc8ba644 ede93000 edeb6c00
[    0.884434] 7c80: 00000000 ede93000 00000001 00000020 c1016800 c0d15778 ee8d7ccc ee8d7ca8
[    0.884443] 7ca0: c05e8064 c05e70b8 ede93000 eec17610 c0f85ac8 edf33390 c112f7cc c1016800
[    0.884452] 7cc0: ee8d7d1c ee8d7cd0 c0638e88 c05e7fd4 00000000 c112f7a4 c101667c c0d15704
[    0.884460] 7ce0: eec17610 eec17634 00000020 dc8ba644 ee8d7d1c ede93000 00000000 00000000
[    0.884469] 7d00: c10166d8 c1016690 00000000 c0f85ac8 ee8d7d3c ee8d7d20 c05f1e30 c06388c4
[    0.884478] 7d20: c112f7cc ee9fe200 ede93000 c10166d8 ee8d7d6c ee8d7d40 c05f4068 c05f1d84
[    0.884487] 7d40: c0d29968 c0f85ac8 ee9fe200 ee9fe210 c0f85ac8 ee9fe200 ee9fe210 fffffdfb
[    0.884496] 7d60: ee8d7d94 ee8d7d70 c0639018 c05f4020 00000000 dc8ba644 00000000 c11313a0
[    0.884504] 7d80: ee9fe210 c1016690 ee8d7db4 ee8d7d98 c0645c78 c0638f94 c11313a0 ee9fe210
[    0.884513] 7da0: c1061f68 00000000 ee8d7de4 ee8d7db8 c06438dc c0645c28 ee8d7de4 c0a12180
[    0.884522] 7dc0: ee9fe210 c1016690 ee9fe244 c0643b14 00000000 00000000 ee8d7e04 ee8d7de8
[    0.884531] 7de0: c0643bb0 c06436b0 00000000 c1016690 c0f85ac8 c0643b14 ee8d7e34 ee8d7e08
[    0.884540] 7e00: c064136c c0643b20 ee8d7e40 ee81ec5c ee9f6cb4 dc8ba644 c1016690 edea0480
[    0.884549] 7e20: c1016dc8 c1061e90 ee8d7e44 ee8d7e38 c0643030 c06412ec ee8d7e74 ee8d7e48
[    0.884558] 7e40: c0642b30 c0643010 c0d1550c edf330c0 ee8d7e74 c1016690 c0f8a260 c0f8a260
[    0.884567] 7e60: edf330c0 c0ef19b4 ee8d7e8c ee8d7e78 c064469c c0642954 c1016dc8 c0f8a260
[    0.884576] 7e80: ee8d7ea4 ee8d7e90 c0645b88 c0644620 c1070000 c0f8a260 ee8d7eb4 ee8d7ea8
[    0.884584] 7ea0: c0ef19fc c0645b44 ee8d7f44 ee8d7eb8 c00098fc c0ef19c0 ee8d7ee4 ee8d7ec8
[    0.884593] 7ec0: ee8d7ee4 00000000 c0eab654 c04fef6c c0de16b4 ef6cd600 ee8d7f44 ee8d7ee8
[    0.884602] 7ee0: c00653b4 c0eab644 00000000 c008c4e0 c0ca6fb4 c0ca7000 c0ca68ec 00000006
[    0.884611] 7f00: 00000006 c105c490 00000000 c0de00ac c0d4c5f8 dc8ba644 00000001 c1070000
[    0.884619] 7f20: c1070000 c0f7bad4 c0f22834 0000011a c0eab638 00000007 ee8d7f94 ee8d7f48
[    0.884628] 7f40: c0eac008 c0009830 00000006 00000006 00000000 c0eab638 c0de00ac c0f85ac8
[    0.884637] 7f60: c01c7d44 dc8ba644 c0a0ecd0 00000000 c0a0ecd0 00000000 00000000 00000000
[    0.884645] 7f80: 00000000 00000000 ee8d7fac ee8d7f98 c0a0ecec c0eabe20 00000000 c0a0ecd0
[    0.884654] 7fa0: 00000000 ee8d7fb0 c0010ee0 c0a0ecdc 00000000 00000000 00000000 00000000
[    0.884662] 7fc0: 00000000 00000000 00000000 00000000 00000000 00000000 00000000 00000000
[    0.884670] 7fe0: 00000000 00000000 00000000 00000000 00000013 00000000 aaaaaaaa aaaaaaaa
[    0.884700] [<c0636b6c>] (tilcdc_crtc_irq) from [<c06387a4>] (tilcdc_irq+0x20/0x24)
[    0.884722] [<c06387a4>] (tilcdc_irq) from [<c00a7f8c>] (handle_irq_event_percpu+0xac/0x2b0)
[    0.884735] [<c00a7f8c>] (handle_irq_event_percpu) from [<c00a81e4>] (handle_irq_event+0x54/0x78)
[    0.884746] [<c00a81e4>] (handle_irq_event) from [<c00aba74>] (handle_level_irq+0xb8/0x150)
[    0.884757] [<c00aba74>] (handle_level_irq) from [<c00a7530>] (generic_handle_irq+0x34/0x44)
[    0.884768] [<c00a7530>] (generic_handle_irq) from [<c00a783c>] (__handle_domain_irq+0x6c/0xc4)
[    0.884780] [<c00a783c>] (__handle_domain_irq) from [<c0009500>] (omap_intc_handle_irq+0x44/0xa0)
[    0.884795] [<c0009500>] (omap_intc_handle_irq) from [<c0a14714>] (__irq_svc+0x54/0x70)
[    0.884799] Exception stack(0xee8d74c8 to 0xee8d7510)
[    0.884806] 74c0:                   c0f93358 a0000013 dc8ba644 00000007 00000000 c0f93358
[    0.884815] 74e0: a0000013 c0f85140 00000000 00000008 c0f85140 ee8d7524 ee8d7528 ee8d7518
[    0.884821] 7500: c002fc30 c0a13f84 60000013 ffffffff
[    0.884832] [<c0a14714>] (__irq_svc) from [<c0a13f84>] (_raw_spin_unlock_irqrestore+0x30/0x34)
[    0.884852] [<c0a13f84>] (_raw_spin_unlock_irqrestore) from [<c002fc30>] (omap_hwmod_idle+0x44/0x54)
[    0.884864] [<c002fc30>] (omap_hwmod_idle) from [<c00312f4>] (omap_device_idle+0x58/0xb0)
[    0.884875] [<c00312f4>] (omap_device_idle) from [<c0031378>] (_od_runtime_suspend+0x2c/0x30)
[    0.884891] [<c0031378>] (_od_runtime_suspend) from [<c064df94>] (__rpm_callback+0x48/0x94)
[    0.884902] [<c064df94>] (__rpm_callback) from [<c064e010>] (rpm_callback+0x30/0x90)
[    0.884911] [<c064e010>] (rpm_callback) from [<c064e5fc>] (rpm_suspend+0x130/0x65c)
[    0.884919] [<c064e5fc>] (rpm_suspend) from [<c064edd0>] (rpm_idle+0x1d8/0x2e0)
[    0.884930] [<c064edd0>] (rpm_idle) from [<c064ef58>] (__pm_runtime_idle+0x80/0xa8)
[    0.884938] [<c064ef58>] (__pm_runtime_idle) from [<c06369b8>] (tilcdc_crtc_mode_set+0x470/0x5d8)
[    0.884952] [<c06369b8>] (tilcdc_crtc_mode_set) from [<c05d86a8>] (drm_crtc_helper_set_mode+0x2a8/0x4e4)
[    0.884963] [<c05d86a8>] (drm_crtc_helper_set_mode) from [<c05d9408>] (drm_crtc_helper_set_config+0x9ec/0xb5c)
[    0.884975] [<c05d9408>] (drm_crtc_helper_set_config) from [<c05f7cec>] (drm_mode_set_config_internal+0x68/0xe4)
[    0.884995] [<c05f7cec>] (drm_mode_set_config_internal) from [<c05e53a4>] (restore_fbdev_mode+0xc4/0x2a8)
[    0.885009] [<c05e53a4>] (restore_fbdev_mode) from [<c05e7000>] (drm_fb_helper_restore_fbdev_mode_unlocked+0x40/0x88)
[    0.885021] [<c05e7000>] (drm_fb_helper_restore_fbdev_mode_unlocked) from [<c05e7088>] (drm_fb_helper_set_par+0x40/0x64)
[    0.885032] [<c05e7088>] (drm_fb_helper_set_par) from [<c0564224>] (fbcon_init+0x524/0x560)
[    0.885050] [<c0564224>] (fbcon_init) from [<c05b4bb8>] (visual_init+0xd0/0x118)
[    0.885063] [<c05b4bb8>] (visual_init) from [<c05b6450>] (do_bind_con_driver+0x1d4/0x434)
[    0.885074] [<c05b6450>] (do_bind_con_driver) from [<c05b6adc>] (do_take_over_console+0x190/0x1f8)
[    0.885084] [<c05b6adc>] (do_take_over_console) from [<c05642e4>] (do_fbcon_takeover+0x84/0xe0)
[    0.885092] [<c05642e4>] (do_fbcon_takeover) from [<c0564fd4>] (fbcon_event_notify+0x7a8/0x7e4)
[    0.885113] [<c0564fd4>] (fbcon_event_notify) from [<c0066d10>] (notifier_call_chain+0x54/0x94)
[    0.885125] [<c0066d10>] (notifier_call_chain) from [<c006716c>] (__blocking_notifier_call_chain+0x58/0x70)
[    0.885134] [<c006716c>] (__blocking_notifier_call_chain) from [<c00671ac>] (blocking_notifier_call_chain+0x28/0x30)
[    0.885147] [<c00671ac>] (blocking_notifier_call_chain) from [<c056bb14>] (fb_notifier_call_chain+0x28/0x2c)
[    0.885160] [<c056bb14>] (fb_notifier_call_chain) from [<c056dba4>] (register_framebuffer+0x1cc/0x2ec)
[    0.885172] [<c056dba4>] (register_framebuffer) from [<c05e7378>] (drm_fb_helper_initial_config+0x2cc/0x47c)
[    0.885183] [<c05e7378>] (drm_fb_helper_initial_config) from [<c05e8064>] (drm_fbdev_cma_init+0x9c/0x114)
[    0.885192] [<c05e8064>] (drm_fbdev_cma_init) from [<c0638e88>] (tilcdc_load+0x5d0/0x638)
[    0.885207] [<c0638e88>] (tilcdc_load) from [<c05f1e30>] (drm_dev_register+0xb8/0xc8)
[    0.885219] [<c05f1e30>] (drm_dev_register) from [<c05f4068>] (drm_platform_init+0x54/0xec)
[    0.885229] [<c05f4068>] (drm_platform_init) from [<c0639018>] (tilcdc_pdev_probe+0x90/0xb8)
[    0.885243] [<c0639018>] (tilcdc_pdev_probe) from [<c0645c78>] (platform_drv_probe+0x5c/0xc0)
[    0.885254] [<c0645c78>] (platform_drv_probe) from [<c06438dc>] (driver_probe_device+0x238/0x470)
[    0.885263] [<c06438dc>] (driver_probe_device) from [<c0643bb0>] (__driver_attach+0x9c/0xa0)
[    0.885277] [<c0643bb0>] (__driver_attach) from [<c064136c>] (bus_for_each_dev+0x8c/0xd0)
[    0.885286] [<c064136c>] (bus_for_each_dev) from [<c0643030>] (driver_attach+0x2c/0x30)
[    0.885294] [<c0643030>] (driver_attach) from [<c0642b30>] (bus_add_driver+0x1e8/0x280)
[    0.885303] [<c0642b30>] (bus_add_driver) from [<c064469c>] (driver_register+0x88/0x108)
[    0.885311] [<c064469c>] (driver_register) from [<c0645b88>] (__platform_driver_register+0x50/0x58)
[    0.885328] [<c0645b88>] (__platform_driver_register) from [<c0ef19fc>] (tilcdc_drm_init+0x48/0x50)
[    0.885340] [<c0ef19fc>] (tilcdc_drm_init) from [<c00098fc>] (do_one_initcall+0xd8/0x230)
[    0.885358] [<c00098fc>] (do_one_initcall) from [<c0eac008>] (kernel_init_freeable+0x1f4/0x2a4)
[    0.885380] [<c0eac008>] (kernel_init_freeable) from [<c0a0ecec>] (kernel_init+0x1c/0xf0)
[    0.885396] [<c0a0ecec>] (kernel_init) from [<c0010ee0>] (ret_from_fork+0x14/0x34)
[    0.885406] Code: e3520002 03a0205c 13a02008 e0833002 (e5935000)
[    0.885455] ---[ end trace 4cc7d10ab5dc73c8 ]---
[    0.885462] Kernel panic - not syncing: Fatal exception in interrupt
[    2.321986] ---[ end Kernel panic - not syncing: Fatal exception in interrupt
[   34.328378] random: nonblocking pool is initialized

Hi,

What about your dts files? I need to see how you configure your LCDC & display panel, as it seems they are the problematic modules.

Best Regards,
Yordan

This is the LCD dts file.

/*
* Copyright (C) 2012 Texas Instruments Incorporated - http://www.ti.com/
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*/
/dts-v1/;
/plugin/;

/ {
compatible = "ti,beaglebone", "ti,beaglebone-black", "ti,beaglebone-green";

/* identification */
part-number = "BB-BONE-LCD4-01";
version = "00A0";

/* state the resources this cape uses */
exclusive-use =
/* the pin header uses */
"P8.45", /* lcd: lcd_data0 */
"P8.46", /* lcd: lcd_data1 */
"P8.43", /* lcd: lcd_data2 */
"P8.44", /* lcd: lcd_data3 */
"P8.41", /* lcd: lcd_data4 */
"P8.42", /* lcd: lcd_data5 */
"P8.39", /* lcd: lcd_data6 */
"P8.40", /* lcd: lcd_data7 */
"P8.37", /* lcd: lcd_data8 */
"P8.38", /* lcd: lcd_data9 */
"P8.36", /* lcd: lcd_data10 */
"P8.34", /* lcd: lcd_data11 */
"P8.35", /* lcd: lcd_data12 */
"P8.33", /* lcd: lcd_data13 */
"P8.31", /* lcd: lcd_data14 */
"P8.32", /* lcd: lcd_data15 */
"P8.27", /* lcd: lcd_vsync */
"P8.29", /* lcd: lcd_hsync */
"P8.28", /* lcd: lcd_pclk */
"P8.30", /* lcd: lcd_ac_bias_en */
"P8.14", /* key: gpio0_26 */
"P8.15", /* key: gpio1_15 */
"P8.16", /* key: gpio1_14 */
"P8.18", /* key: gpio2_1 */
/* the hardware IP uses */
"lcd";

fragment@0 {
target = <&am33xx_pinmux>;
__overlay__ {

acr330_keys_00A0_pins: pinmux_acr330_keys_00A0_pins {
pinctrl-single,pins = <
0x028 0x37 /* KEY_ESC gpmc_ad10.gpio0_26, INPUT | PULLUPEN | MODE7 */
0x03c 0x37 /* KEY_UP gpmc_ad15.gpio1_15, INPUT | PULLUPEN | MODE7 */
0x038 0x37 /* KEY_DOWN gpmc_ad14.gpio1_14, INPUT | PULLUPEN | MODE7 */
0x08c 0x37 /* KEY_ENTER gpmc_clk.gpio2_1, INPUT | PULLUPEN | MODE7 */
>;
};

bone_lcd4_cape_lcd_pins: pinmux_bone_lcd4_cape_lcd_pins {
pinctrl-single,pins = <
0xa0 0x08 /* lcd_data0.lcd_data0, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xa4 0x08 /* lcd_data1.lcd_data1, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xa8 0x08 /* lcd_data2.lcd_data2, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xac 0x08 /* lcd_data3.lcd_data3, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xb0 0x08 /* lcd_data4.lcd_data4, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xb4 0x08 /* lcd_data5.lcd_data5, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xb8 0x08 /* lcd_data6.lcd_data6, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xbc 0x08 /* lcd_data7.lcd_data7, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xc0 0x08 /* lcd_data8.lcd_data8, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xc4 0x08 /* lcd_data9.lcd_data9, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xc8 0x08 /* lcd_data10.lcd_data10, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xcc 0x08 /* lcd_data11.lcd_data11, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xd0 0x08 /* lcd_data12.lcd_data12, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xd4 0x08 /* lcd_data13.lcd_data13, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xd8 0x08 /* lcd_data14.lcd_data14, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xdc 0x08 /* lcd_data15.lcd_data15, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT | AM33XX_PULL_DISA */
0xe0 0x00 /* lcd_vsync.lcd_vsync, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
0xe4 0x00 /* lcd_hsync.lcd_hsync, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
0xe8 0x00 /* lcd_pclk.lcd_pclk, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
0xec 0x00 /* lcd_ac_bias_en.lcd_ac_bias_en, OMAP_MUX_MODE0 | AM33XX_PIN_OUTPUT */
>;
};

pwm_bl_pins: pinmux_pwm_bl_pins {
pinctrl-single,pins = <
0x48 0x06 /* gpmc_a2.ehrpwm1a, OMAP_MUX_MODE6 | AM33XX_PIN_OUTPUT */
>;
};

};
};

fragment@1 {
target = <&ocp>;

__overlay__ {

/* avoid stupid warning */
#address-cells = <1>;
#size-cells = <1>;

gpio_keys {
compatible = "gpio-keys";
pinctrl-names = "default";
pinctrl-0 = <&acr330_keys_00A0_pins>;

#address-cells = <1>;
#size-cells = <0>;

button@1 {
debounce_interval = <50>;
linux,code = <59>;
label = "esc";
gpios = <&gpio0 26 0x1>;
gpio-key,wakeup;
autorepeat;
};
button@2 {
debounce_interval = <50>;
linux,code = <60>;
label = "up";
gpios = <&gpio2 1 0x1>;
gpio-key,wakeup;
autorepeat;
};
button@3 {
debounce_interval = <50>;
linux,code = <61>;
label = "down";
gpios = <&gpio1 14 0x1>;
gpio-key,wakeup;
autorepeat;
};
button@4 {
debounce_interval = <50>;
linux,code = <62>;
label = "enter";
gpios = <&gpio1 15 0x1>;
gpio-key,wakeup;
};
};

/* Settings for NHD-4.3-ATXI#-T-1 / LCD4 cape: */
panel {
status = "okay";
compatible = "ti,tilcdc,panel";
pinctrl-names = "default";
pinctrl-0 = <&bone_lcd4_cape_lcd_pins>;
panel-info {
ac-bias = <255>;
ac-bias-intrpt = <0>;
dma-burst-sz = <16>;
bpp = <32>;
fdd = <0x80>;
tft-alt-mode = <0>;
stn-565-mode = <0>;
mono-8bit-mode = <0>;
sync-edge = <0>;
sync-ctrl = <1>;
raster-order = <0>;
fifo-th = <0>;
};
display-timings {
native-mode = <&timing0>;
timing0: 480x272 {
hactive = <480>;
vactive = <272>;
hback-porch = <44>;
hfront-porch = <9>;
hsync-len = <5>;
vback-porch = <13>;
vfront-porch = <4>;
vsync-len = <10>;
clock-frequency = <9000000>;
hsync-active = <0>;
vsync-active = <0>;
};
};
};

fb {
compatible = "ti,am33xx-tilcdc";
reg = <0x4830e000 0x1000>;
interrupt-parent = <&intc>;
interrupts = <36>;
ti,hwmods = "lcdc";
};

backlight {
compatible = "pwm-backlight";
pinctrl-names = "default";
pinctrl-0 = <&pwm_bl_pins>;

pwms = <&ehrpwm1 0 20000 0>;
pwm-names = "LCD4";
brightness-levels = <0 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100>;
default-brightness-level = <100>; /* index to the array above */
power-supply = <&ldo3_reg>;
status = "okay";
};

};
};

fragment@2 {
target = <&epwmss1>;
__overlay__ {
status = "okay";
};
};

fragment@3 {
target = <&ehrpwm1>;
__overlay__ {
status = "okay";
};
};
};

Please post what Linux version is this, and where did you get it from.

The Linux version is 4.4.68. It is downloaded from github.com/.../linux.