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IMX28 what the meaning of startup HTLLLLL

Question asked by shashikant h on Aug 31, 2019
Latest reply on Sep 5, 2019 by shashikant h

i am seeing a weird behaviour during power cycle test of imx28 board,

 

in normal room temperature, the power cycle test passed.

on every power up, bootletlog shows this

HTLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLFLC
>> TS-BOOTROM - built Dec 22 2016 12:46:40
>> Copyright (c) 2013, Technologic Systems
LLLCFeb 9 201205:04:46
FRAC 0x92925552
memory type is DDR2
Wait for ddr ready 1power 0x00820710
Frac 0x92925552
start change cpu freq
hbus 0x00000003
cpu 0x00010001
start test memory accress
ddr2 0x40000000
finish simple test
LLLLLLLFLCLLJUncompressing Linux... done, booting the kernel.

 

but at hot chamber power cycle test, at 60 C, the unit freese, not even the kernel loading start,

 

HTLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLLFLC
>> TS-BOOTROM - built Dec 22 2016 12:46:40
>> Copyright (c) 2013, Technologic Systems
LLLCFeb 9 201205:04:46
FRAC 0x92925552
memory type is DDR2
Wait for ddr ready 1power 0x00820710
Frac 0x92925552
start change cpu freq
hbus 0x00000003
cpu 0x00010001
start test memory accress
ddr2 0x40000000
finish simple test
LLLLLLLFLCLLJ

 

the unit is not reboot, its freeze

 

Any suggestion would be helpful

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