Got my serial console working. thanks for the guidance! In term of TX2, the good news is that the board is still alive. The bad news is that the board keeps rebooting itself.
From the console message, I saw the footprint of my DTB which is to configure six IMX219 cameras (apparently failed). What puzzles me is that I had reflashed that board a couple of times using SDK manager. I expected the system should have been wiped clean, is there a way to force that in SDK Manager?
For those viewers didn’t know what happened, my TX2 went dark after I tried to reflash the DTB in old way (something like L4T 28). Reflash the system with new Jetpak seems not helping.
Here is the screen shot from series console:
U-Boot 2016.07-ge6da093be3 (Jun 25 2020 - 21:14:32 -0700)
TEGRA186
Model: NVIDIA P2771-0000-500
DRAM: 7.8 GiB
MC: Tegra SD/MMC: 0, Tegra SD/MMC: 1
*** Warning - bad CRC, using default environment
In: serial
Out: serial
Err: serial
Net: eth0: ethernet@2490000
Hit any key to stop autoboot: 0
MMC: no card present
switch to partitions #0, OK
mmc0(part 0) is current device
Scanning mmc 0:1…
Found /boot/extlinux/extlinux.conf
Retrieving file: /boot/extlinux/extlinux.conf
857 bytes read in 133 ms (5.9 KiB/s)
1: primary kernel
Retrieving file: /boot/initrd
5565615 bytes read in 196 ms (27.1 MiB/s)
Retrieving file: /boot/Image
34330632 bytes read in 861 ms (38 MiB/s)
append: console=ttyS0,115200 root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 co
## Flattened Device Tree blob at 80000000
Booting using the fdt blob at 0x80000000
reserving fdt memory region: addr=80000000 size=10000
Using Device Tree in place at 0000000080000000, end 000000008003e3cd
Starting kernel …
[ 0.000000] Booting Linux on physical CPU 0x100
[ 0.000000] Linux version 4.9.140-tegra (buildbrain@mobile-u64-3357) (gcc ve0
[ 0.000000] Boot CPU: AArch64 Processor [411fd073]
[ 0.000000] OF: fdt:memory scan node memory@80000000, reg size 16416,
[ 0.000000] OF: fdt: - 80000000 , 70000000
[ 0.000000] OF: fdt: - f0200000 , 185600000
[ 0.000000] OF: fdt: - 275e00000 , 200000
[ 0.000000] OF: fdt: - 276600000 , 200000
[ 0.000000] OF: fdt: - 277000000 , 200000
[ 0.000000] earlycon: uart8250 at MMIO32 0x0000000003100000 (options ‘’)
[ 0.000000] bootconsole [uart8250] enabled
[ 0.795392] falcon 15340000.vic: failed to get IRQ
[ 0.798282] iommu_context_dev 13e10000.host1x:ctx0: iommu is not enabled for.
[ 0.798320] iommu_context_dev 13e10000.host1x:ctx1: iommu is not enabled for.
[ 0.798353] iommu_context_dev 13e10000.host1x:ctx2: iommu is not enabled for.
[ 0.798385] iommu_context_dev 13e10000.host1x:ctx3: iommu is not enabled for.
[ 0.798417] iommu_context_dev 13e10000.host1x:ctx4: iommu is not enabled for.
[ 0.798449] iommu_context_dev 13e10000.host1x:ctx5: iommu is not enabled for.
[ 0.798480] iommu_context_dev 13e10000.host1x:ctx6: iommu is not enabled for.
[ 0.798512] iommu_context_dev 13e10000.host1x:ctx7: iommu is not enabled for.
[ 1.915964] tegra-ahci 3507000.ahci-sata: controller reset failed (0xfffffff)
[ 2.081529] imx219 2-0038: Failed to find port index
[ 2.086515] imx219 2-0038: Failed to find port info.
[ 2.091493] imx219 2-0038: Failed to initialize imx219
[ 2.096644] imx219 2-0038: tegra camera driver registration failed
[ 2.103262] imx219 2-0039: imx219_power_get: unable to request reset_gpio (-)
[ 2.110599] imx219 2-0039: unable to power get
[ 2.115057] imx219 2-0039: tegra camera driver registration failed
[ 2.121633] imx219 2-003a: imx219_power_get: unable to request reset_gpio (-)
[ 2.128960] imx219 2-003a: unable to power get
[ 2.133429] imx219 2-003a: tegra camera driver registration failed
[ 2.140161] imx219 2-003b: imx219_power_get: unable to request reset_gpio (-)
[ 2.147490] imx219 2-003b: unable to power get
[ 2.151946] imx219 2-003b: tegra camera driver registration failed
[ 2.158517] imx219 2-003c: imx219_power_get: unable to request reset_gpio (-)
[ 2.165854] imx219 2-003c: unable to power get
[ 2.170312] imx219 2-003c: tegra camera driver registration failed
[ 2.176873] imx219 2-003d: imx219_power_get: unable to request reset_gpio (-)
[ 2.184199] imx219 2-003d: unable to power get
[ 2.188665] imx219 2-003d: tegra camera driver registration failed
[ 2.203873] arm-smmu 12000000.iommu: Unexpected {global,context} fault, thiss
[ 2.212402] arm-smmu 12000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000
[ 2.222707] mc-err: vpr base=0:0, size=0, ctrl=1, override:(e01a8341, 1dc10c)
[ 2.231078] mc-err: (255) csw_bpmpw: MC request violates VPR requirements
[ 2.237871] mc-err: status = 0x00337094; addr = 0x3ffffffc0
[ 2.243622] mc-err: secure: yes, access-type: write
[ 2.248685] mc-err: unknown mcerr fault, int_status=0x00000000, ch_int_statu0
[ 2.259211] mc-err: unknown mcerr fault, int_status=0x00000000, ch_int_statu0
[ 2.269736] mc-err: unknown mcerr fault, int_status=0x00000000, ch_int_statu0
[ 2.280260] mc-err: Too many MC errors; throttling prints
[ 2.285796] arm-smmu 12000000.iommu: Unexpected {global,context} fault, thiss
[ 2.294320] arm-smmu 12000000.iommu: GFSR 0x80000002, GFSYNR0 0x00000
[ 2.306971] Unable to handle kernel paging request at virtual address ffffff0
[ 2.314924] Mem abort info:
[ 2.317739] ESR = 0x96000047
[ 2.320818] Exception class = DABT (current EL), IL = 32 bits
[ 2.326749] SET = 0, FnV = 0
[ 2.329816] EA = 0, S1PTW = 0
[ 2.332969] Data abort info:
[ 2.335851] ISV = 0, ISS = 0x00000047
[ 2.339697] CM = 0, WnR = 1
[ 2.342678] swapper pgtable: 4k pages, 39-bit VAs, pgd = ffffff800a1d9000
[ 2.349474] [ffffff800a3aa020] *pgd=00000002771fe003, *pud=00000002771fe003,0
[ 2.360508] Internal error: Oops: 96000047 [#1] PREEMPT SMP
[ 2.366080] Modules linked in:
[ 2.369153] CPU: 3 PID: 1 Comm: swapper/0 Not tainted 4.9.140-tegra #1
[ 2.375678] Hardware name: quill (DT)
[ 2.379342] task: ffffffc1ecb30000 task.stack: ffffffc1ecb38000
[ 2.385270] PC is at tegra_update_cpu_speed+0x140/0x178
[ 2.390494] LR is at tegra_update_cpu_speed+0x11c/0x178
[ 2.395719] pc : [] lr : [] pstate: 60405
[ 2.403112] sp : ffffffc1ecb3b9a0
[ 2.406427] x29: ffffffc1ecb3b9a0 x28: 00000000024000c0
[ 2.411764] x27: 0000000000000000 x26: ffffff8009e67f74
[ 2.417099] x25: ffffff800a1aa4f0 x24: ffffff800a3aa020
[ 2.422432] x23: ffffff800a1aa4f0 x22: 0000000000000000
[ 2.427766] x21: ffffff800a1aa558 x20: ffffffc1f703da98
[ 2.433100] x19: 0000000000000000 x18: 0000000000000000
[ 2.438434] x17: 0000000000000000 x16: 0000000000000000
[ 2.443768] x15: 0000000000000000 x14: 0000000000000001
[ 2.449100] x13: 0000000000000030 x12: 0000000000000038
[ 2.454432] x11: 000000000000000b x10: 0101010101010101
[ 2.459765] x9 : ffffffffffffffff x8 : ffffffc1e9f32800
[ 2.465099] x7 : 0000000000000000 x6 : 0000000000000000
[ 2.470432] x5 : 0000000000000001 x4 : 0000000000000000
[ 2.475765] x3 : ffffff8009831a98 x2 : 0000000000000000
[ 2.481096] x1 : 0000000000000000 x0 : ffffff800a3aa000
[ 2.486430]
[ 2.487925] Process swapper/0 (pid: 1, stack limit = 0xffffffc1ecb38000)
[ 2.494622] Call trace:
[ 2.497076] [] tegra_update_cpu_speed+0x140/0x178
[ 2.503344] [] tegra186_cpufreq_set_target+0x198/0x228
[ 2.510043] [] __cpufreq_driver_target+0x1d0/0x610
[ 2.516395] [] cpufreq_online+0x654/0x748
[ 2.521965] [] cpufreq_add_dev+0x84/0xc8
[ 2.527455] [] subsys_interface_register+0x90/0xd8
[ 2.533806] [] cpufreq_register_driver+0x190/0x278
[ 2.540163] [] tegra186_cpufreq_probe+0xa20/0xa90
[ 2.546430] [] platform_drv_probe+0x60/0xc0
[ 2.552175] [] driver_probe_device+0xd8/0x408
[ 2.558093] [] __driver_attach+0xdc/0x128
[ 2.563664] [] bus_for_each_dev+0x5c/0xa8
[ 2.569235] [] driver_attach+0x30/0x40
[ 2.574546] [] bus_add_driver+0x20c/0x2a8
[ 2.580118] [] driver_register+0x6c/0x110
[ 2.585688] [] __platform_driver_register+0x5c/0x68
[ 2.592127] [] tegra186_cpufreq_platform_driver_init+0x18/0
[ 2.599527] [] do_one_initcall+0x44/0x130
[ 2.605101] [] kernel_init_freeable+0x1a0/0x244
[ 2.611195] [] kernel_init+0x18/0x108
[ 2.616418] [] ret_from_fork+0x10/0x30
[ 2.621738] —[ end trace 8c0218b566354a00 ]—
[ 2.630776] note: swapper/0[1] exited with preempt_count 1
[ 2.636289] Kernel panic - not syncing: Attempted to kill init! exitcode=0x0b
[ 2.636289]
[ 2.645427] SMP: stopping secondary CPUs
[ 2.649364] Kernel Offset: disabled
[ 2.652852] Memory Limit: none
[ 2.660370] Rebooting in 5 seconds…