Tuesday, 2022-06-21

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tplatenWhen I try to pnr ls2 for the orangecrab, I get ERROR: DQS group mismatch, port DQSW270 of 'ddrphy.U$$46' in group LDQ41 is driven by DQSBUFM 'ddrphy.U$$45' in group LDQ53 in nextpnr16:47
tplatenI have carefully compared nmigen-boards to the schematics and still don't understand whats going wrong16:52
gatecatls2?16:57
gatecatthe problem is probably a mismatch between DQS groups16:57
tplatenthis one https://git.libre-soc.org/?p=ls2.git;a=summary16:57
tpbTitle: git.libre-soc.org Git - ls2.git/summary (at git.libre-soc.org)16:57
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tplatenmost likely16:58
gatecatit might also be worth asking one of the orangecrab people16:58
gatecatand looking at other amaranth projects using the orangecrab to compare?16:58
tplatenI am going to ask them, as microwatt is already working16:59
tplatenI am not aware of any other project using orangecrab to compare, so I ask gregdavill17:01
jevinskie[m]Looks like it is flipped compared to litex https://github.com/litex-hub/litex-boards/blob/master/litex_boards/platforms/gsd_orangecrab.py19:21
tplatenI'll have a look tomorrow19:27
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