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| Hynix H27QFGDYEB0R Read Retry Datasheet http://forum.hddguru.com/viewtopic.php?f=10&t=31359 |
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| Author: | jeremyb [ June 8th, 2015, 0:31 ] |
| Post subject: | Hynix H27QFGDYEB0R Read Retry Datasheet |
I have a few projects that are using high density Hynix NAND chips that are returning many errors when read.. I'm trying to figure out how to implement read retry on them but I can't find any datasheet that mentions it.. I did find this uncommitted patch but I don't understand the process.. https://lkml.org/lkml/2014/2/24/431 I don't understand the significance to setting NAND_CMD_NONE w/ a column value. or why they're reading a data structure from the NAND chip and writing specific bytes from that structure back to it depending on the retry_mode. Seems like Micron's method is much easier.. |
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| Author: | DRUG [ June 8th, 2015, 5:06 ] |
| Post subject: | Re: Hynix H27QFGDYEB0R Read Retry Datasheet |
jeremyb wrote: I did find this uncommitted patch but I don't understand the process.. https://lkml.org/lkml/2014/2/24/431 I can't help much, but if you wanna do this make sure you are running in sudo otherwise you will get .ioperm error. |
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