Welcome to minicom 2.7.1

OPTIONS: I18n
Compiled on Dec 23 2019, 02:06:26.
Port /dev/ttyUSB0, 15:01:15

Press CTRL-A Z for help on special keys

[0000.125] [L4T TegraBoot] (version 00.00.2018.01-l4t-b1625959)
[0000.131] Processing in cold boot mode Bootloader 2
[0000.135] A02 Bootrom Patch rev = 1023
[0000.139] Power-up reason: pmc por
[0000.142] No Battery Present
[0000.145] pmic max77620 reset reason
[0000.148] pmic max77620 NVERC : 0x40
[0000.151] RamCode = 0
[0000.154] Platform has DDR4 type RAM
[0000.157] max77620 disabling SD1 Remote Sense
[0000.161] Setting DDR voltage to 1125mv
[0000.165] Serial Number of Pmic Max77663: 0xb36e9
[0000.173] Entering ramdump check
[0000.176] Get RamDumpCarveOut = 0x0
[0000.179] RamDumpCarveOut=0x0,  RamDumperFlag=0xe59ff3f8
[0000.184] Last reboot was clean, booting normally!
[0000.189] Sdram initialization is successful
[0000.193] SecureOs Carveout Base=0x00000000ff800000 Size=0x00800000
[0000.199] Lp0 Carveout Base=0x00000000ff780000 Size=0x00001000
[0000.205] BpmpFw Carveout Base=0x00000000ff700000 Size=0x00080000
[0000.211] GSC1 Carveout Base=0x00000000ff600000 Size=0x00100000
[0000.216] GSC2 Carveout Base=0x00000000ff500000 Size=0x00100000
[0000.222] GSC4 Carveout Base=0x00000000ff400000 Size=0x00100000
[0000.228] GSC5 Carveout Base=0x00000000ff300000 Size=0x00100000
[0000.234] GSC3 Carveout Base=0x000000017f300000 Size=0x00d00000
[0000.250] RamDump Carveout Base=0x00000000ff280000 Size=0x00080000
[0000.256] Platform-DebugCarveout: 0
[0000.259] Nck Carveout Base=0x00000000ff080000 Size=0x00200000
[0000.265] Non secure mode, and RB not enabled.
[0000.269] BoardID = 3448, SKU = 0x0
[0000.273] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0000.276] Nano-SD: checking PT table on QSPI ...
[0000.281] Initialize FailControl
[0000.284] Read PT from (2:0)
[0000.314] PT crc32 and magic check passed.
[0000.318] Using BFS PT to query partitions
[0000.324] Loading Tboot-CPU binary
[0000.352] Verifying TBC in OdmNonSecureSBK mode
[0000.363] Bootloader load address is 0xa0000000, entry address is 0xa0000258
[0000.370] Bootloader downloaded successfully.
[0000.375] Downloaded Tboot-CPU binary to 0xa0000258
[0000.380] MAX77620_GPIO5 configured
[0000.383] CPU power rail is up
[0000.386] CPU clock enabled
[0000.390] Performing RAM repair
[0000.392] Updating A64 Warmreset Address to 0xa00002e9
[0000.397] BoardID = 3448, SKU = 0x0
[0000.401] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0000.405] Nano-SD: checking PT table on QSPI ...
[0000.409] NvTbootFailControlDoFailover: No failover; Continuing ...
[0000.415] Loading NvTbootBootloaderDTB
[0000.481] Verifying NvTbootBootloaderDTB in OdmNonSecureSBK mode
[0000.551] Bootloader DTB Load Address: 0x83000000
[0000.555] BoardID = 3448, SKU = 0x0
[0000.558] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0000.562] Nano-SD: checking PT table on QSPI ...
[0000.567] NvTbootFailControlDoFailover: No failover; Continuing ...
[0000.573] Loading NvTbootKernelDTB
[0000.639] Verifying NvTbootKernelDTB in OdmNonSecureSBK mode
[0000.708] Kernel DTB Load Address: 0x83100000
[0000.712] BoardID = 3448, SKU = 0x0
[0000.715] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0000.719] Nano-SD: checking PT table on QSPI ...
[0000.723] NvTbootFailControlDoFailover: No failover; Continuing ...
[0000.731] Loading cboot binary
[0000.847] Verifying EBT in OdmNonSecureSBK mode
[0000.889] Bootloader load address is 0x92c00000, entry address is 0x92c00258
[0000.896] Bootloader downloaded successfully.
[0000.900] BoardID = 3448, SKU = 0x0
[0000.903] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0000.907] Nano-SD: checking PT table on QSPI ...
[0000.911] NvTbootFailControlDoFailover: No failover; Continuing ...
[0000.918] PT: Partition NCT NOT found !
[0000.921] Warning: Find Partition via PT Failed
[0000.926] Next binary entry address: 0x92c00258
[0000.930] BoardId: 3448
[0000.935] Overriding pmu board id with proc board id
[0000.939] Display board id is not available
[0000.944] BoardID = 3448, SKU = 0x0
[0000.947] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0000.951] Nano-SD: checking PT table on QSPI ...
[0000.955] NvTbootFailControlDoFailover: No failover; Continuing ...
[0001.062] Verifying SC7EntryFw in OdmNonSecureSBK mode
[0001.151] /bpmp deleted
[0001.153] SC7EntryFw header found loaded at 0xff700000
[0001.573] OVR2 PMIC
[0001.575] Bpmp FW successfully loaded
[0001.578] BoardID = 3448, SKU = 0x0
[0001.582] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0001.585] Nano-SD: checking PT table on QSPI ...
[0001.590] NvTbootFailControlDoFailover: No failover; Continuing ...
[0001.597] WB0 init successfully at 0xff780000
[0001.601] Verifying NvTbootWb0 in OdmNonSecureSBK mode
[0001.606] Set NvDecSticky Bits
[0001.610] GSC2 address ff53fffc value c0edbbcc
[0001.616] GSC MC Settings done
[0001.619] BoardID = 3448, SKU = 0x0
[0001.622] QSPI-ONLY: SkipQspiOnlyFlag = 0
[0001.626] Nano-SD: checking PT table on QSPI ...
[0001.630] NvTbootFailControlDoFailover: No failover; Continuing ...
[0001.637] TOS Image length 53680
[0001.640]  Monitor size 53680
[0001.643]  OS size 0
[0001.658] Secure Os AES-CMAC Verification Success!
[0001.663] TOS image cipher info: plaintext
[0001.667] Loading and Validation of Secure OS Successful
[0001.683] SC7 Entry Firmware - 0xff700000, 0x4000
[0001.687] NvTbootPackSdramParams: start.
[0001.692] NvTbootPackSdramParams: done.
[0001.696] Tegraboot started after 52329 us
[0001.700] Basic modules init took 932487 us
[0001.704] Sec Bootdevice Read Time = 12 ms, Read Size = 61 KB
[0001.710] Sec Bootdevice Write Time = 0 ms, Write Size = 0 KB
[0001.715] Next stage binary read took 102860 us
[0001.719] Carveout took -132464 us
[0001.723] CPU initialization took 782110 us
[0001.727] Total time taken by TegraBoot 1684993 us

[0001.732] Starting CPU & Halting co-processor

64NOTICE:  BL31: v1.3(release):f9bf1e1
NOTICE:  BL31: Built : 21:16:40, Jun  8 2023
ERROR:   Error initializing runtime service trusty_fast
[0001.854] RamCode = 0
[0001.864] LPDDR4 Training: found 4 entries (2 nominal, 2 derated)
[0001.870] EMC Training (SRC-freq: 204000; DST-freq: 1600000)
[0001.882] EMC Training Successful
[0001.885] EMC Training (SRC-freq: 204000; DST-freq: 1600000)
[0001.898] EMC Training Successful
[0001.901] 408000 not found in DVFS table
[0001.941] RamCode = 0
[0001.947] DT Write: emc-table@204000 succeeded
[0001.955] DT Write: emc-table@1600000 succeeded
[0001.962] DT Write: emc-table-derated@204000 succeeded
[0001.971] DT Write: emc-table-derated@1600000 succeeded
[0001.976] LPDDR4 Training: Write DT: Number of tables = 4
[0002.032]
[0002.033] Debug Init done
[0002.036] Marked DTB cacheable
[0002.039] Bootloader DTB loaded at 0x83000000
[0002.043] Marked DTB cacheable
[0002.046] Kernel DTB loaded at 0x83100000
[0002.050] DeviceTree Init done
[0002.065] Pinmux applied successfully
[0002.070] gicd_base: 0x50041000
[0002.074] gicc_base: 0x50042000
[0002.077] Interrupts Init done
[0002.081] Using base:0x60005090 & irq:208 for tick-timer
[0002.086] Using base:0x60005098 for delay-timer
[0002.091] platform_init_timer: DONE
[0002.094] Timer(tick) Init done
[0002.098] osc freq = 38400 khz
[0002.102]
[0002.103] Welcome to L4T Cboot
[0002.106]
[0002.107] Cboot Version: 00.00.2018.01-t210-acb23272
[0002.112] calling constructors
[0002.115] initializing heap
[0002.118] initializing threads
[0002.121] initializing timers
[0002.124] creating bootstrap completion thread
[0002.128] top of bootstrap2()
[0002.131] CPU: ARM Cortex A57
[0002.134] CPU: MIDR: 0x411FD071, MPIDR: 0x80000000
[0002.139] initializing platform
[0002.147] Manufacturer: MF = 0xc2, ID MSB = 0x25
[0002.152] ID LSB = 0x36, ID-CFI len = 194 bytes
[0002.156] Macronix QSPI chip present
[0002.160] SPI device register
[0002.163] init boot device
[0002.165] allocating memory for boot device(SPI)
[0002.170] registering boot device
[0002.178] QSPI bdev is already initialized
[0002.182] Enable APE clock
[0002.185] Un-powergate APE partition
[0002.188] of_register: registering tegra_udc to of_hal
[0002.193] of_register: registering inv20628-driver to of_hal
[0002.199] of_register: registering ads1015-driver to of_hal
[0002.205] of_register: registering lp8557-bl-driver to of_hal
[0002.210] of_register: registering bq2419x_charger to of_hal
[0002.216] of_register: registering bq27441_fuel_gauge to of_hal
[0002.229] gpio framework initialized
[0002.233] of_register: registering tca9539_gpio to of_hal
[0002.238] of_register: registering tca9539_gpio to of_hal
[0002.243] of_register: registering i2c_bus_driver to of_hal
[0002.249] of_register: registering i2c_bus_driver to of_hal
[0002.254] of_register: registering i2c_bus_driver to of_hal
[0002.260] pmic framework initialized
[0002.263] of_register: registering max77620_pmic to of_hal
[0002.269] regulator framework initialized
[0002.273] of_register: registering tps65132_bl_driver to of_hal
[0002.279] initializing target
[0002.285] gpio_driver_register: register 'tegra_gpio_driver' driver
[0002.294] board ID = D78, board SKU = 0
[0002.298] Skipping Z3!
[0002.303] fixed regulator driver initialized
[0002.325] initializing OF layer
[0002.328] NCK carveout not present
[0002.331] Skipping dts_overrides
[0002.335] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0002.354] I2C Bus Init done
[0002.357] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0002.368] I2C Bus Init done
[0002.370] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0002.381] I2C Bus Init done
[0002.384] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0002.395] I2C Bus Init done
[0002.398] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0002.409] I2C Bus Init done
[0002.412] of_children_init: Ops found for compatible string maxim,max77620
[0002.423] max77620_init using irq 118
[0002.428] register 'maxim,max77620' pmic
[0002.432] gpio_driver_register: register 'max77620-gpio' driver
[0002.439] of_children_init: Ops found for compatible string nvidia,tegra210-i2c
[0002.450] I2C Bus Init done
[0002.454] NCK carveout not present
[0002.465] Find /i2c@7000c000's alias i2c0
[0002.469] get eeprom at 1-a0, size 256, type 0
[0002.479] Find /i2c@7000c500's alias i2c2
[0002.483] get eeprom at 3-a0, size 256, type 0
[0002.488] get eeprom at 3-ae, size 256, type 0
[0002.492] pm_ids_update: Updating 1,a0, size 256, type 0
[0002.497] I2C slave not started
[0002.500] I2C write failed
[0002.503] Writing offset failed
[0002.506] eeprom_init: EEPROM read failed
[0002.510] pm_ids_update: eeprom init failed
[0002.514] pm_ids_update: Updating 3,a0, size 256, type 0
[0002.544] pm_ids_update: The pm board id is 3448-0000-200
[0002.551] Adding plugin-manager/ids/3448-0000-200=/i2c@7000c500:module@0x50
[0002.560] pm_ids_update: pm id update successful
[0002.564] pm_ids_update: Updating 3,ae, size 256, type 0
[0002.594] pm_ids_update: The pm board id is 3449-0000-200
[0002.601] Adding plugin-manager/ids/3449-0000-200=/i2c@7000c500:module@0x57
[0002.609] pm_ids_update: pm id update successful
[0002.639] eeprom_get_mac: EEPROM invalid MAC address (all 0xff)
[0002.645] shim_eeprom_update_mac:267: Failed to update 0 MAC address in DTB
[0002.653] eeprom_get_mac: EEPROM invalid MAC address (all 0xff)
[0002.659] shim_eeprom_update_mac:267: Failed to update 1 MAC address in DTB
[0002.668] updating /chosen/nvidia,ethernet-mac node 00:04:4b:e5:00:3a
[0002.674] Plugin Manager: Parse ODM data 0x000a4000
[0002.687] shim_cmdline_install: /chosen/bootargs: earlycon=uart8250,mmio32,0x70006000
[0002.703] Find /i2c@7000c000's alias i2c0
[0002.707] get eeprom at 1-a0, size 256, type 0
[0002.717] Find /i2c@7000c500's alias i2c2
[0002.721] get eeprom at 3-a0, size 256, type 0
[0002.726] get eeprom at 3-ae, size 256, type 0
[0002.730] pm_ids_update: Updating 1,a0, size 256, type 0
[0002.735] I2C slave not started
[0002.738] I2C write failed
[0002.741] Writing offset failed
[0002.744] eeprom_init: EEPROM read failed
[0002.748] pm_ids_update: eeprom init failed
[0002.752] pm_ids_update: Updating 3,a0, size 256, type 0
[0002.782] pm_ids_update: The pm board id is 3448-0000-200
[0002.789] Adding plugin-manager/ids/3448-0000-200=/i2c@7000c500:module@0x50
[0002.796] pm_ids_update: pm id update successful
[0002.800] pm_ids_update: Updating 3,ae, size 256, type 0
[0002.830] pm_ids_update: The pm board id is 3449-0000-200
[0002.837] Adding plugin-manager/ids/3449-0000-200=/i2c@7000c500:module@0x57
[0002.844] pm_ids_update: pm id update successful
[0002.874] Add serial number:0421519063129 as DT property
[0002.883] Applying platform configs
[0002.890] platform-init is not present. Skipping
[0002.894] calling apps_init()
[0002.900] Couldn't find GPT header
[0002.905] Proceeding to Cold Boot
[0002.908] starting app android_boot_app
[0002.912] Device state: unlocked
[0002.915] display console init
[0002.924] could not find regulator
[0002.948] hdmi cable not connected
[0002.951] is_hdmi_needed: HDMIDT entry for leds-pwm not found
 [0002.961] not connected, returning false
[0002.965] hdmi is not connected
[0002.968] sor0 is not supported
[0002.971] display_console_init: no valid display out_type
[0002.979] subnode volume_up is not found !
[0002.983] subnode back is not found !
[0002.987] subnode volume_down is not found !
[0002.991] subnode menu is not found !
[0002.995] Gpio keyboard init success
[0003.075] found decompressor handler: lz4-legacy
[0003.089] decompressing blob (type 1)...
[0003.155] display_resolution: No display init
[0003.160] Failed to retrieve display resolution
[0003.164] Could not load/initialize BMP blob...ignoring
[0003.169] -------> se_aes_verify_sbk_clear: 747
[0003.174] se_aes_verify_sbk_clear: Error
[0003.178] SE operation failed
[0003.180] bl_battery_charging: connected to external power supply
[0003.191] display_console_ioctl: No display init
[0003.195] switch_backlight failed
[0003.201] device_query_partition_size: failed to open partition spiflash0:MSC !
[0003.209] MSC Partition not found
[0003.215] device_query_partition_size: failed to open partition spiflash0:USP !
[0003.222] USP partition read failed!
[0003.226] blob_init: blob-partition USP header read failed
[0003.231] android_boot Unable to update recovery partition
[0003.237] kfs_getpartname: name = LNX
[0003.240] Loading kernel from LNX
[0003.249] Found 19 BFS partitions in "spiflash0"
[0003.570] load kernel from storage
[0003.575] decompressor handler not found
[0003.841] Successfully loaded kernel and ramdisk images
[0003.846] board ID = D78, board SKU = 0
[0003.851] sdmmc node status = okay
[0003.854] sdcard instance = 0
[0003.857] sdmmc cd-inverted
[0003.860] sdcard gpio handle 0x5b
[0003.863] sdcard gpio pin 0xc9
[0003.866] sdcard gpio flags 0x0
[0003.869] vmmc-supply 0x9b
[0003.871] cd_gpio_pin = 201
[0003.874] pin_state = 0
[0003.876] Found sdcard
[0003.879] SD-card IS present ...
[0003.882] load_and_boot_kernel: SD card detected OK
[0003.888] display_resolution: No display init
[0003.892] Failed to retrieve display resolution
[0003.897] bmp blob is not loaded and initialized
[0003.901] Failed to display boot-logo
[0003.905] NCK carveout not present
[0003.908] Skipping dts_overrides
[0003.911] NCK carveout not present
[0003.923] Find /i2c@7000c000's alias i2c0
[0003.927] get eeprom at 1-a0, size 256, type 0
[0003.937] Find /i2c@7000c500's alias i2c2
[0003.941] get eeprom at 3-a0, size 256, type 0
[0003.945] get eeprom at 3-ae, size 256, type 0
[0003.950] pm_ids_update: Updating 1,a0, size 256, type 0
[0003.955] I2C slave not started
[0003.958] I2C write failed
[0003.961] Writing offset failed
[0003.964] eeprom_init: EEPROM read failed
[0003.968] pm_ids_update: eeprom init failed
[0003.972] pm_ids_update: Updating 3,a0, size 256, type 0
[0004.002] pm_ids_update: The pm board id is 3448-0000-200
[0004.009] Adding plugin-manager/ids/3448-0000-200=/i2c@7000c500:module@0x50
[0004.017] pm_ids_update: pm id update successful
[0004.022] pm_ids_update: Updating 3,ae, size 256, type 0
[0004.052] pm_ids_update: The pm board id is 3449-0000-200
[0004.058] Adding plugin-manager/ids/3449-0000-200=/i2c@7000c500:module@0x57
[0004.066] pm_ids_update: pm id update successful
[0004.097] eeprom_get_mac: EEPROM invalid MAC address (all 0xff)
[0004.103] shim_eeprom_update_mac:267: Failed to update 0 MAC address in DTB
[0004.111] eeprom_get_mac: EEPROM invalid MAC address (all 0xff)
[0004.117] shim_eeprom_update_mac:267: Failed to update 1 MAC address in DTB
[0004.125] updating /chosen/nvidia,ethernet-mac node 00:04:4b:e5:00:3a
[0004.132] Plugin Manager: Parse ODM data 0x000a4000
[0004.144] shim_cmdline_install: /chosen/bootargs: earlycon=uart8250,mmio32,0x70006000
[0004.153] Add serial number:0421519063129 as DT property
[0004.162] "bpmp" doesn't exist, creating
[0004.168] Updated bpmp info to DTB
[0004.173] Updated initrd info to DTB
[0004.177] "proc-board" doesn't exist, creating
[0004.183] Updated board info to DTB
[0004.186] "pmu-board" doesn't exist, creating
[0004.192] Updated board info to DTB
[0004.195] "display-board" doesn't exist, creating
[0004.201] Updated board info to DTB
[0004.204] "reset" doesn't exist, creating
[0004.209] Updated reset info to DTB
[0004.212] display_console_ioctl: No display init
[0004.217] display_console_ioctl: No display init
[0004.222] display_console_ioctl: No display init
[0004.226] Cmdline: tegraid=21.1.2.0.0 ddr_die=4096M@2048M section=512M memtype=0 vpr_resize usb_p
[0004.261] DTB cmdline: earlycon=uart8250,mmio32,0x70006000
[0004.266] boot image cmdline: root=/dev/mmcblk0p1 rw rootwait rootfstype=ext4 console=ttyS0,11520
[0004.279] Updated bootarg info to DTB
[0004.283] Adding uuid 00000001644226c82000000006ff0240 to DT
[0004.289] Adding eks info 0 to DT
[0004.295] WARNING: Failed to pass NS DRAM ranges to TOS, err: -7
[0004.301] Updated memory info to DTB
[0004.307] Updated system-lp0-disable info to DTB
[0004.316] set vdd_core voltage to 1075 mv
[0004.320] setting 'vdd-core' regulator to 1075000 micro volts
[0004.326] Found secure-pmc; disable BPMP


U-Boot 2020.04-g4335beb (Jun 08 2023 - 21:16:44 -0700)

SoC: tegra210
Model: NVIDIA Jetson Nano Developer Kit
Board: NVIDIA P3450-0000
DRAM:  4 GiB
MMC:   sdhci@700b0000: 1, sdhci@700b0600: 0
Loading Environment from SPI Flash... SF: Detected mx25u3235f with page size 256 Bytes, erase sizeB
*** Warning - bad CRC, using default environment

In:    serial
Out:   serial
Err:   serial
Net:   No ethernet found.
Hit any key to stop autoboot:  0
switch to partitions #0, OK
mmc1 is current device
Scanning mmc 1:1...
Found /boot/extlinux/extlinux.conf
Retrieving file: /boot/extlinux/extlinux.conf
845 bytes read in 30 ms (27.3 KiB/s)
1:      primary kernel
Retrieving file: /boot/initrd
7159624 bytes read in 335 ms (20.4 MiB/s)
Retrieving file: /boot/Image
34484232 bytes read in 1510 ms (21.8 MiB/s)
append: tegraid=21.1.2.0.0 ddr_die=4096M@2048M section=512M memtype=0 vpr_resize usb_port_owner_in
## Flattened Device Tree blob at 83100000
   Booting using the fdt blob at 0x83100000
ERROR: reserving fdt memory region failed (addr=83410000 size=10000)
ERROR: reserving fdt memory region failed (addr=83400000 size=10000)
ERROR: reserving fdt memory region failed (addr=0 size=0)
ERROR: reserving fdt memory region failed (addr=0 size=0)
   Using Device Tree in place at 0000000083100000, end 000000008317bfff
copying carveout for /host1x@50000000/dc@54200000...
copying carveout for /host1x@50000000/dc@54240000...

Starting kernel ...

[    0.000000] Booting Linux on physical CPU 0x0
[    0.000000] Linux version 4.9.253-tegra (buildbrain@mobile-u64-5434-d8000) (gcc version 7.3.1 22
[    0.000000] Boot CPU: AArch64 Processor [411fd071]
[    0.000000] OF: fdt:memory scan node memory@80000000, reg size 32,
[    0.000000] OF: fdt: - 80000000 ,  7ee00000
[    0.000000] OF: fdt: - 100000000 ,  7f200000
[    0.000000] earlycon: uart8250 at MMIO32 0x0000000070006000 (options '')
[    0.000000] bootconsole [uart8250] enabled
[    1.066596] tegradc tegradc.1: dpd enable lookup fail:-19
[    1.572401] Host read timeout at address 545c00c4
[    1.808065] imx219 6-0010: imx219_board_setup: error during i2c read probe (-121)
[    1.815745] imx219 6-0010: board setup failed
[    3.951482] cgroup: cgroup2: unknown option "nsdelegate"
[    5.028345] using random self ethernet address
[    5.032857] using random host ethernet address
[    5.383645] random: crng init done
[    5.387050] random: 7 urandom warning(s) missed due to ratelimiting
[    5.514330] using random self ethernet address
[    5.518800] using random host ethernet address
[   14.586554] Please complete system configuration setup on the serial port provided by Jetson's .