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Nand problems - mx6ul commercial to industrial

Question asked by Grant Sinclair on May 16, 2019
Latest reply on Jun 6, 2019 by igorpadykov

Hi

I'm working with an i.mx6ul on a custom board. Recently I've moved from the commercial part to the industrial part (MCIMX6G2DVM05AA to MCIMX6G2CVM05AB) but now I'm having NAND problems at boot (see log below). Sometimes I'm able to load an image to nand, but then on subsequent boots I get the same NAND read error. Erasing the NAND from u-boot sometimes reports problems too.

 

I2C: ready
DRAM: 256 MiB
NAND: 128 MiB
MMC: FSL_SDHC: 0, FSL_SDHC: 1
MXS NAND: DMA read error
NAND read from offset c80000 failed -110

 

I'm aware of errata 11115, but the parts placed have date code 1831 so should not be susceptible to this. I had assumed the commercial and industrial versions would behave identically - I haven't found any documented differences. There have been some small copper changes to the PCB layout, but these look low-risk and there are no changes to any other components.

 

Thanks and kind regards

Grant Sinclair

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