problem flashing u-boot on to TX2 eMMC

After building my own version of u-boot according the procedure in
https://docs.nvidia.com/jetson/l4t/index.html#page/Tegra%2520Linux%2520Driver%2520Package%2520Development%2520Guide%2Fuboot_guide.html%23

I tried flashing the u-boot using the below command. But the flash fails with a return value of 13

sudo ./flash.sh -k LNX jetson-tx2 mmcblk0p1
###############################################################################
    # L4T BSP Information:
    # R32 , REVISION: 2.1
    ###############################################################################
    # Target Board Information:
    # Name: jetson-tx2, Board Family: t186ref, SoC: Tegra 186, 
    # OpMode: production, Boot Authentication: NS, 
    ###############################################################################
    ./tegraflash.py --chip 0x18 --applet "/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_recovery_prod.bin" --skipuid --cmd "dump eeprom boardinfo cvm.bin" 
    Welcome to Tegra Flash
    version 1.0.0
    Type ? or help for help and q or quit to exit
    Use ! to execute system commands
     
    [   0.0023 ] Generating RCM messages
    [   0.0031 ] tegrarcm_v2 --listrcm rcm_list.xml --chip 0x18 0 --download rcm /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_recovery_prod.bin 0 0
    [   0.0039 ] RCM 0 is saved as rcm_0.rcm
    [   0.0043 ] RCM 1 is saved as rcm_1.rcm
    [   0.0043 ] List of rcm files are saved in rcm_list.xml
    [   0.0043 ] 
    [   0.0044 ] Signing RCM messages
    [   0.0050 ] tegrasign_v2 --key None --list rcm_list.xml --pubkeyhash pub_key.key
    [   0.0057 ] Assuming zero filled SBK key
    [   0.0084 ] 
    [   0.0084 ] Copying signature to RCM mesages
    [   0.0092 ] tegrarcm_v2 --chip 0x18 0 --updatesig rcm_list_signed.xml
    [   0.0101 ] 
    [   0.0101 ] Boot Rom communication
    [   0.0107 ] tegrarcm_v2 --chip 0x18 0 --rcm rcm_list_signed.xml --skipuid
    [   0.0113 ] RCM version 0X180001
    [   0.0123 ] Boot Rom communication completed
    [   1.0189 ] 
    [   2.0233 ] tegrarcm_v2 --isapplet
    [   2.0261 ] Applet version 01.00.0000
    [   2.0466 ] 
    [   2.0487 ] Retrieving EEPROM data
    [   2.0489 ] tegrarcm_v2 --oem platformdetails eeprom cvm /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/cvm.bin
    [   2.0506 ] Applet version 01.00.0000
    [   2.0862 ] Saved platform info in /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/cvm.bin
    [   2.1591 ] 
    Board ID(3310) version(B02) sku(1000) revision(B.0)
    copying bctfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/P3310_A00_8GB_Samsung_8GB_lpddr4_204Mhz_A02_l4t.cfg)... done.
    copying misc_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-misc-si-l4t.cfg)... done.
    copying pinmux_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-pinmux-quill-p3310-1000-c03.cfg)... done.
    copying pmic_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-pmic-quill-p3310-1000-c04.cfg)... done.
    copying pmc_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-pad-quill-p3310-1000-c03.cfg)... done.
    copying prod_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-prod-quill-p3310-1000-c03.cfg)... done.
    copying scr_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/minimal_scr.cfg)... done.
    copying scr_cold_boot_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/mobile_scr.cfg)... done.
    copying bootrom_config(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/tegra186-mb1-bct-bootrom-quill-p3310-1000-c03.cfg)... done.
    copying dev_params(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/BCT/emmc.cfg)... done.
    Existing bootloader(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_cpu.bin) reused.
    copying initrd(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/l4t_initrd.img)... done.
    	populating kernel to rootfs... done.
    	populating initrd to rootfs... done.
    	populating /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb to rootfs... done.
    Making Boot image... done.
    Existing sosfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_recovery_prod.bin) reused.
    copying tegraboot(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/nvtboot.bin)... done.
    Existing cpu_bootloader(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_cpu.bin) reused.
    Existing mb2blfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_recovery.bin) reused.
    Existing mtspreboot(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/preboot_d15_prod_cr.bin) reused.
    Existing mts(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mce_mts_d15_prod_cr.bin) reused.
    Existing mb1file(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/mb1_prod.bin) reused.
    Existing bpffile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/bpmp.bin) reused.
    copying bpfdtbfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb)... done.
    Existing scefile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/camera-rtcpu-sce.img) reused.
    Existing spefile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/spe.bin) reused.
    Existing drameccfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/dram-ecc.bin) reused.
    Existing badpagefile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/badpage.bin) reused.
    copying wb0boot(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/warmboot.bin)... done.
    Existing tosfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tos-trusty.img) reused.
    Existing eksfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/eks.img) reused.
    copying dtbfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb)... done.
    Copying nv_boot_control.conf to rootfs
    Existing tbcfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/cboot.bin) reused.
    copying tbcdtbfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/kernel/dtb/tegra186-quill-p3310-1000-c03-00-base.dtb)... done.
    copying cfgfile(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/t186ref/cfg/flash_l4t_t186.xml) to flash.xml... done.
    Existing flasher(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/nvtboot_recovery_cpu.bin) reused.
    Existing flashapp(/home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegraflash.py) reused.
    *** Updating [LNX] with boot.img ***
    ./tegraflash.py --bl nvtboot_recovery_cpu.bin  --chip 0x18 --applet mb1_recovery_prod.bin --sdram_config P3310_A00_8GB_Samsung_8GB_lpddr4_204Mhz_A02_l4t.cfg --misc_config tegra186-mb1-bct-misc-si-l4t.cfg --pinmux_config tegra186-mb1-bct-pinmux-quill-p3310-1000-c03.cfg --pmic_config tegra186-mb1-bct-pmic-quill-p3310-1000-c04.cfg --pmc_config tegra186-mb1-bct-pad-quill-p3310-1000-c03.cfg --prod_config tegra186-mb1-bct-prod-quill-p3310-1000-c03.cfg --scr_config minimal_scr.cfg --scr_cold_boot_config mobile_scr.cfg --br_cmd_config tegra186-mb1-bct-bootrom-quill-p3310-1000-c03.cfg --dev_params emmc.cfg  --cfg  flash.xml --bins "mb2_bootloader nvtboot_recovery.bin; mts_preboot preboot_d15_prod_cr.bin; mts_bootpack mce_mts_d15_prod_cr.bin; bpmp_fw bpmp.bin; bpmp_fw_dtb tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb; tlk tos-trusty.img; eks eks.img; bootloader_dtb tegra186-quill-p3310-1000-c03-00-base.dtb"  --cmd "write DTB tegra186-quill-p3310-1000-c03-00-base.dtb; write LNX boot.img; reboot"  
    Welcome to Tegra Flash
    version 1.0.0
    Type ? or help for help and q or quit to exit
    Use ! to execute system commands
     
    [   0.0075 ] Generating RCM messages
    [   0.0083 ] tegrarcm_v2 --listrcm rcm_list.xml --chip 0x18 0 --download rcm mb1_recovery_prod.bin 0 0
    [   0.0090 ] RCM 0 is saved as rcm_0.rcm
    [   0.0093 ] RCM 1 is saved as rcm_1.rcm
    [   0.0093 ] List of rcm files are saved in rcm_list.xml
    [   0.0093 ] 
    [   0.0093 ] Signing RCM messages
    [   0.0100 ] tegrasign_v2 --key None --list rcm_list.xml --pubkeyhash pub_key.key
    [   0.0106 ] Assuming zero filled SBK key
    [   0.0133 ] 
    [   0.0133 ] Copying signature to RCM mesages
    [   0.0139 ] tegrarcm_v2 --chip 0x18 0 --updatesig rcm_list_signed.xml
    [   0.0148 ] 
    [   0.0148 ] Boot Rom communication
    [   0.0154 ] tegrarcm_v2 --chip 0x18 0 --rcm rcm_list_signed.xml
    [   0.0159 ] BootRom is not running
    [   5.0339 ] 
    [   6.0376 ] tegrarcm_v2 --isapplet
    [   6.0397 ] Applet version 01.00.0000
    [   6.0428 ] 
    [   6.0447 ] tegrasign_v2 --key None --getmode mode.txt
    [   6.0463 ] Assuming zero filled SBK key
    [   6.0466 ] 
    [   6.0467 ] Parsing partition layout
    [   6.0479 ] tegraparser_v2 --pt flash.xml.tmp
    [   6.0495 ] 
    [   6.0496 ] Creating list of images to be signed
    [   6.0507 ] tegrahost_v2 --chip 0x18 0 --partitionlayout flash.xml.bin --list images_list.xml zerosbk
    [   6.0751 ] 
    [   6.0751 ] Generating signatures
    [   6.0760 ] tegrasign_v2 --key None --list images_list.xml --pubkeyhash pub_key.key
    [   6.0766 ] Assuming zero filled SBK key
    [   6.3232 ] 
    [   6.3232 ] Reading BCT from device for further operations
    [   6.3233 ] Generating blob
    [   6.3243 ] tegrahost_v2 --chip 0x18 --align blob_nvtboot_recovery_cpu.bin
    [   6.3251 ] 
    [   6.3257 ] tegrahost_v2 --appendsigheader blob_nvtboot_recovery_cpu.bin zerosbk
    [   6.3267 ] 
    [   6.3276 ] tegrasign_v2 --key None --list blob_nvtboot_recovery_cpu_sigheader.bin_list.xml
    [   6.3282 ] Assuming zero filled SBK key
    [   6.3329 ] 
    [   6.3344 ] tegrahost_v2 --updatesigheader blob_nvtboot_recovery_cpu_sigheader.bin.encrypt blob_nvtboot_recovery_cpu_sigheader.bin.hash zerosbk
    [   6.3358 ] 
    [   6.3369 ] tegrahost_v2 --chip 0x18 --align blob_nvtboot_recovery.bin
    [   6.3376 ] 
    [   6.3382 ] tegrahost_v2 --appendsigheader blob_nvtboot_recovery.bin zerosbk
    [   6.3390 ] 
    [   6.3399 ] tegrasign_v2 --key None --list blob_nvtboot_recovery_sigheader.bin_list.xml
    [   6.3404 ] Assuming zero filled SBK key
    [   6.3426 ] 
    [   6.3434 ] tegrahost_v2 --updatesigheader blob_nvtboot_recovery_sigheader.bin.encrypt blob_nvtboot_recovery_sigheader.bin.hash zerosbk
    [   6.3443 ] 
    [   6.3451 ] tegrahost_v2 --chip 0x18 --align blob_preboot_d15_prod_cr.bin
    [   6.3459 ] 
    [   6.3466 ] tegrahost_v2 --appendsigheader blob_preboot_d15_prod_cr.bin zerosbk
    [   6.3473 ] 
    [   6.3481 ] tegrasign_v2 --key None --list blob_preboot_d15_prod_cr_sigheader.bin_list.xml
    [   6.3486 ] Assuming zero filled SBK key
    [   6.3501 ] 
    [   6.3509 ] tegrahost_v2 --updatesigheader blob_preboot_d15_prod_cr_sigheader.bin.encrypt blob_preboot_d15_prod_cr_sigheader.bin.hash zerosbk
    [   6.3516 ] 
    [   6.3523 ] tegrahost_v2 --chip 0x18 --align blob_mce_mts_d15_prod_cr.bin
    [   6.3529 ] 
    [   6.3539 ] tegrahost_v2 --appendsigheader blob_mce_mts_d15_prod_cr.bin zerosbk
    [   6.3582 ] 
    [   6.3593 ] tegrasign_v2 --key None --list blob_mce_mts_d15_prod_cr_sigheader.bin_list.xml
    [   6.3599 ] Assuming zero filled SBK key
    [   6.4073 ] 
    [   6.4085 ] tegrahost_v2 --updatesigheader blob_mce_mts_d15_prod_cr_sigheader.bin.encrypt blob_mce_mts_d15_prod_cr_sigheader.bin.hash zerosbk
    [   6.4112 ] 
    [   6.4120 ] tegrahost_v2 --chip 0x18 --align blob_bpmp.bin
    [   6.4127 ] 
    [   6.4133 ] tegrahost_v2 --appendsigheader blob_bpmp.bin zerosbk
    [   6.4146 ] 
    [   6.4155 ] tegrasign_v2 --key None --list blob_bpmp_sigheader.bin_list.xml
    [   6.4161 ] Assuming zero filled SBK key
    [   6.4288 ] 
    [   6.4300 ] tegrahost_v2 --updatesigheader blob_bpmp_sigheader.bin.encrypt blob_bpmp_sigheader.bin.hash zerosbk
    [   6.4312 ] 
    [   6.4319 ] tegrahost_v2 --chip 0x18 --align blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb
    [   6.4325 ] 
    [   6.4332 ] tegrahost_v2 --appendsigheader blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2.dtb zerosbk
    [   6.4344 ] 
    [   6.4352 ] tegrasign_v2 --key None --list blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb_list.xml
    [   6.4358 ] Assuming zero filled SBK key
    [   6.4465 ] 
    [   6.4474 ] tegrahost_v2 --updatesigheader blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb.encrypt blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb.hash zerosbk
    [   6.4485 ] 
    [   6.4491 ] tegrahost_v2 --chip 0x18 --align blob_tos-trusty.img
    [   6.4498 ] 
    [   6.4504 ] tegrahost_v2 --appendsigheader blob_tos-trusty.img zerosbk
    [   6.4515 ] 
    [   6.4522 ] tegrasign_v2 --key None --list blob_tos-trusty_sigheader.img_list.xml
    [   6.4528 ] Assuming zero filled SBK key
    [   6.4599 ] 
    [   6.4608 ] tegrahost_v2 --updatesigheader blob_tos-trusty_sigheader.img.encrypt blob_tos-trusty_sigheader.img.hash zerosbk
    [   6.4618 ] 
    [   6.4626 ] tegrahost_v2 --chip 0x18 --align blob_eks.img
    [   6.4633 ] 
    [   6.4639 ] tegrahost_v2 --appendsigheader blob_eks.img zerosbk
    [   6.4645 ] 
    [   6.4653 ] tegrasign_v2 --key None --list blob_eks_sigheader.img_list.xml
    [   6.4661 ] Assuming zero filled SBK key
    [   6.4663 ] 
    [   6.4672 ] tegrahost_v2 --updatesigheader blob_eks_sigheader.img.encrypt blob_eks_sigheader.img.hash zerosbk
    [   6.4678 ] 
    [   6.4687 ] tegrahost_v2 --chip 0x18 --align blob_tegra186-quill-p3310-1000-c03-00-base.dtb
    [   6.4693 ] 
    [   6.4700 ] tegrahost_v2 --appendsigheader blob_tegra186-quill-p3310-1000-c03-00-base.dtb zerosbk
    [   6.4711 ] 
    [   6.4719 ] tegrasign_v2 --key None --list blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb_list.xml
    [   6.4725 ] Assuming zero filled SBK key
    [   6.4804 ] 
    [   6.4813 ] tegrahost_v2 --updatesigheader blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb.encrypt blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb.hash zerosbk
    [   6.4823 ] 
    [   6.4831 ] tegrahost_v2 --chip 0x18 --generateblob blob.xml blob.bin
    [   6.4837 ] number of images in blob are 9
    [   6.4839 ] blobsize is 4097256
    [   6.4840 ] Added binary blob_nvtboot_recovery_cpu_sigheader.bin.encrypt of size 203312
    [   6.4856 ] Added binary blob_nvtboot_recovery_sigheader.bin.encrypt of size 89360
    [   6.4860 ] Added binary blob_preboot_d15_prod_cr_sigheader.bin.encrypt of size 63104
    [   6.4864 ] Added binary blob_mce_mts_d15_prod_cr_sigheader.bin.encrypt of size 2082144
    [   6.4868 ] Added binary blob_bpmp_sigheader.bin.encrypt of size 533904
    [   6.4872 ] Added binary blob_tegra186-a02-bpmp-quill-p3310-1000-c04-00-te770d-ucm2_sigheader.dtb.encrypt of size 466240
    [   6.4877 ] Added binary blob_tos-trusty_sigheader.img.encrypt of size 313152
    [   6.4879 ] Added binary blob_eks_sigheader.img.encrypt of size 1440
    [   6.4882 ] Added binary blob_tegra186-quill-p3310-1000-c03-00-base_sigheader.dtb.encrypt of size 344448
    [   6.4897 ] 
    [   6.4897 ] Sending bootloader and pre-requisite binaries
    [   6.4906 ] tegrarcm_v2 --download blob blob.bin
    [   6.4912 ] Applet version 01.00.0000
    [   6.5073 ] Sending blob
    [   6.5074 ] [................................................] 100%
    [   7.0118 ] 
    [   7.0149 ] tegrarcm_v2 --boot recovery
    [   7.0173 ] Applet version 01.00.0000
    [   7.0369 ] 
    [   8.0402 ] tegrarcm_v2 --isapplet
    [   8.0428 ] 
    [   8.0448 ] tegradevflash_v2 --iscpubl
    [   8.0460 ] CPU Bootloader is not running on device.
    [   8.0620 ] 
    [   9.0658 ] tegrarcm_v2 --isapplet
    [   9.0702 ] 
    [   9.0726 ] tegradevflash_v2 --iscpubl
    [   9.0749 ] Bootloader version 01.00.0000
    [   9.0915 ] Bootloader version 01.00.0000
    [   9.0926 ] 
    [   9.0927 ] Writing partition
    [   9.0945 ] tegradevflash_v2 --write DTB /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegra186-quill-p3310-1000-c03-00-base.dtb
    [   9.0960 ] Bootloader version 01.00.0000
    [   9.1111 ] Writing partition DTB with /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegra186-quill-p3310-1000-c03-00-base.dtb
    [   9.1119 ] 000000000d0d000d: o open partition %s.
    [   9.1241 ] 
    [   9.1241 ] 
    Error: Return value 13
    Command tegradevflash_v2 --write DTB /home/deepak/nvidia/nvidia_sdk/JetPack_4.2.2_Linux_GA_P3310/Linux_for_Tegra/bootloader/tegra186-quill-p3310-1000-c03-00-base.dtb
    Failed to flash/read t186ref.

This problem arises only when I try to flash u-boot separately. If I simply flash using the below command, there are no issues. However, I want to flash u-boot only. Please let me know if there are any issues with my command.

sudo ./flash.sh jetson-tx2 mmcblk0p1

hello deepak.rajamohan,

you’re using wrong partition names for TX2 platforms.
please check the flash configuration files for its partition names.
thanks

for example,

<i>$OUT/Linux_for_Tegra/bootloader/flash.xml</i>

        <partition name="kernel" type="data" oem_sign="true">
            <filename> boot.img </filename>
...
        <partition name="kernel-dtb" type="data" oem_sign="true">
            <filename> tegra186-quill-p3310-1000-c03-00-base.dtb </filename>

The Linux_for_Tegra/bootloader/flash.xml file has a partition name for cboot.bin file. but not for the u-boot.bin file that I want to flash.

According to

</partition>
        <partition name="cpu-bootloader" type="bootloader" oem_sign="true">
...
            <filename> cboot.bin </filename>

The file Linux_for_Tegra/bootloader/t186ref/cfg/flash_l4t_t186.xml has the partition name LNXNAME which should contain u-boot according to the table

“Jetson TX2 Series (P3489 and P3489-nnnn), sdmmc_user Partition”

But when I use the command below it says “*** Update [LNXNAME] is not supported. ***”

sudo ./flash.sh -k LNXNAME jetson-tx2 mmcblk0p1

hello deepak.rajamohan,

u-boot is in the kernel partition, please refer to U-Boot Customization for details.
thanks

I did refer to the link U-Boot Customization page and I understand that U-Boot is in the kernel partition. It says the name of the kernel partition is LNX. However, when I use this name I get error. This is what I mentioned in my original question. So what is the name of the kernel partition?

hello deepak.rajamohan,

LNX is the kernel partition name for TX1, Nano; TX2 and Xavier is using different names.
you may refer to comment #2 to check the flash configuration files for all partition names.
please using below commands to update kernel partition,
for example,

$ sudo ./flash.sh -r -k kernel jetson-tx2 mmcblk0p1