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AM1808: Can't load uboot

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Part Number:AM1808

We are currently in production with a processor board using AM1808. We have a fairly high fall out rate (~5%) of boards where we can't load uboot. The boards come up in bootme as expected, We have 2-way serial communication with bootme. All supplies and clocks look right. But it fails to talk to flash when we try to flash uboot. We have tried replacing the flash chip but that did not help. I was wondering if anyone has experienced similar issues and what they did to fix it. Thanks.


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