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| somlo | This only works for the nexys4ddr, but I think I'm finally on to the relationship between the various moving parts in where the various pieces of the test pattern go during read leveling: https://pastebin.com/u2ABky30 | 17:05 |
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| somlo | I'll now try to cook up a general patch using the various alignment, chunk-size, etc. #defines | 17:06 |
| somlo | ^^ I meant it only works on the nexys4ddr, and only for 32-bit csr-data-width, to be precise :) | 17:07 |
| somlo | _florent_: ^^ | 17:08 |
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| _florent_ | somlo: ok great, now that you figured out things, getting something generic should not be too complicated (i'm happy helping on that) | 18:49 |
| somlo | _florent_: trying something right now, but I can't test write_leveling or the sdrrdbuf/sdrrderr/sdrwr functions, as they get #ifdef'd out in my designs | 19:25 |
| somlo | but let me first make sure I have something that works generally on read_leveling, then I'll email it to you :) | 19:26 |
| _florent_ | somlo: indeed, write leveling is probably only used on kintex7/ultrascale, i can do the tests for that | 20:21 |
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| somlo | _florent_: somewhat unrelated: https://github.com/enjoy-digital/litex/blob/master/litex/soc/software/bios/sdram.c#L207 should print "sdrwr" :) | 21:50 |
| tpb | Title: litex/sdram.c at master · enjoy-digital/litex · GitHub (at github.com) | 21:50 |
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