We're currently testing a custom board. the SD card boot fails with the following log:
Xilinx Zynq MP First Stage Boot Loader
Release 2018.3 Jun 5 2020 - 16:31:27
Reset Mode : System Reset
Platform: Silicon (4.0), Cluster ID 0x80000000
Running on A53-0 (64-bit) Processor, Device Name: XCZU7EV
Processor Initialization Done
================= In Stage 2 ============
SD1 Boot Mode
SD: rc= 0
File name is 1:/BOOT.BIN
SD: Unable to open file 1:/BOOT.BIN: 3
Boot Device Initialization failed 0x29
================= In Stage Err ============
Fsbl Error Status: 0x0
Our image can boot on carrier board. We compare power-up sequence of the two board. No improvement.
We tried to slow down the clock from 200MHz to 100MHz. No improvement.
Do you have another idea that we could try?