nvtboot hang

Hi, There

We developed a custom TX1 carrier board. I flashed stock tx1 image on it using tegraflash.py.
When I boot up the system, it enter tegraboot successfully but always stop after Performing RAM repair as show below. Does anyone has some insight on how can I find more information about why it stops there? Could it be PMIC issue? Can I enable more verbose output for nvtboot?


[0000.151] [TegraBoot] (version 24.00.2015.42-mobile-ec3b827e)
[0000.156] Processing in cold boot mode Bootloader 2
[0000.161] A02 Bootrom Patch rev = 63
[0000.164] Power-up reason: usb hotplug
[0000.168] No Battery Present
[0000.170] RamCode = 0
[0000.173] Platform has Ddr4 type ram
[0000.176] max77620 disabling SD1 Remote Sense
[0000.180] Setting Ddr voltage to 1125mv
[0000.184] Serial Number of Pmic Max77663: 0x2308b4
[0000.192] Entering ramdump check
[0000.195] Get RamDumpCarveOut = 0x0
[0000.198] RamDumpCarveOut=0x0, RamDumperFlag=0xe59ff3f8
[0000.203] Last reboot was clean, booting normally!
[0000.208] Sdram initialization is successful
[0000.212] SecureOs Carveout Base=0xff800000 Size=0x00800000
[0000.217] GSC1 Carveout Base=0xff700000 Size=0x00100000
[0000.223] GSC2 Carveout Base=0xff600000 Size=0x00100000
[0000.228] GSC3 Carveout Base=0xff500000 Size=0x00100000
[0000.233] GSC4 Carveout Base=0xff400000 Size=0x00100000
[0000.238] GSC5 Carveout Base=0xff300000 Size=0x00100000
[0000.243] BpmpFw Carveout Base=0xff2c0000 Size=0x00040000
[0000.248] Lp0 Carveout Base=0xff2bf000 Size=0x00001000
[0000.264] RamDump Carveout Base=0xff23f000 Size=0x00080000
[0000.269] Platform-DebugCarveout: 0
[0000.272] Nck Carveout Base=0xff03f000 Size=0x00200000
[0000.277] Non secure mode. Disable rollback prevention
[0000.282] AOTAG Init Done
[0000.320] Using GPT Primary to query partitions
[0000.325] Loading Tboot-CPU binary
[0000.374] Verifying bootloader in OdmNonSecureSBK mode
[0000.384] Bootloader load address is 0xa0000000, entry address is 0xa0000258
[0000.391] Bootloader downloaded successfully.
[0000.395] Downloaded Tboot-CPU binary to 0xa0000258
[0000.400] MAX77620_GPIO1 Configured.
[0000.404] MAX77620_GPIO5 Configured.
[0000.407] CPU power rail is up
[0000.410] CPU clock enabled
[0000.414] Performing RAM repair

I found a similar thread wrt this, seems very relevant, I’ll report back later if that solve my problem

We had a pull up for JTAG_AP_TRST_L, remove it fixed the problem