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GOWIN GW1NR-LV9 mem init + memtest failure #381
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Hi @axibo-reiner, I ordered some Tang Nano 9K but unfortunately haven't received yet them (and not sure I will unless I reorder some...), so I'm not able to test directly. The PSRAM/HyperRAM support has been contributed by @Icenowy and since this, the HyperRAM core has been reworked. I would first recommend testing with the HyperRAM core version from https://github.com/litex-hub/litehyperbus/releases/tag/2021.12. If working, then we have a regression on the HyperRAM core for Gowin parts and I could try to reorder some Tang Nano 9K, if failing, that's probably an issue with the toolchain. |
success
Rolling back to 2021.12 for hyperbus worked with the latest tool chain from gowin. I will start poking around to see if i can upstream some fix. |
With 5188b17, we are now using the old HyperRAM core on the tang nano 9k as a workaround until the issue is properly investigated. |
Using the target for the tang nano 9k with no modifications.
made with
What I have tested
I am using the latest Gowin toolchain.
Now i am taking some time to better understand the memory initialization and testing.
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