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Observer pmusumeci
Observer
214 Views
Registered: ‎11-12-2018

zcu102 intermittent boot problems - typically DIMM_VDDQ and PS_DDR4_VTERM fail, or VCCBRAM fails

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Context: Using HW-Z1-ZCU102 Revision 1.1 and the system has booted and run a 2017.4 demo linux from SD Card.

Problem: However it often does not get to start the boot process due to power supply issues. Typically, LEDs DS17 (DIMM_VDDQ) and DS31 (PS_DDR4_VTERM) will light but then be extinguished after about 5 seconds . In a small number of other cases, these LEDs stay on but the DS8 LED (VCCBRAM) goes out. 

This looks very similar but not exactly the same as (solved) problem at URL

https://forums.xilinx.com/t5/Embedded-Linux/zcu102-intermittent-boot-problems/m-p/862514

(shorter URL https://goo.gl/kpfaWW).

Question: should we buy the adapter and reprogram the MAX15301 and MAX15303 PMBus devices as per AR# 66882 and AR# 66811?

Thanks in advance for any suggestions.

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Xilinx Employee
Xilinx Employee
201 Views
Registered: ‎06-06-2018

Re: zcu102 intermittent boot problems - typically DIMM_VDDQ and PS_DDR4_VTERM fail, or VCCBRAM fails

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Hi @pmusumeci,

Yes, follow those AR.

 

Regards,

Deepak D N

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Xilinx Employee
Xilinx Employee
202 Views
Registered: ‎06-06-2018

Re: zcu102 intermittent boot problems - typically DIMM_VDDQ and PS_DDR4_VTERM fail, or VCCBRAM fails

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Hi @pmusumeci,

Yes, follow those AR.

 

Regards,

Deepak D N

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