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| SpaceCoaster | I am playing with psram, an APS6404L, very similar to flash. The mmap mode of LiteSPI works well for reading but not for writing. | 00:41 |
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| SpaceCoaster | Also who is Sports Internet Solutions LLC on Amazon, they sell teensy, orange crab, fomu, tomu and PSRAM. | 00:44 |
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| yootis | _florent_: I tried the commit immediately before the one you mention, and it makes the DMA test work again. | 05:30 |
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| _florent_ | yootis: Thanks, I'm going to look at this | 09:01 |
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| _florent_ | yootis: The dma_test issue should be fixed with https://github.com/enjoy-digital/litepcie/commit/a40b2b837cfb046b3acc27b9c637f83b46ce4731 | 13:33 |
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| SpaceCoaster | Should the PSRAM use the cache? The spiflash does but I am not sure what happens to writes. | 17:58 |
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| _florent_ | SpaceCoaster: LiteSPIMMAP only support reads for now. Write should not be too complicated to add but hasn't been implemented yet. | 18:06 |
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| SpaceCoaster | I looked at it and it seemed possible. | 18:36 |
| _florent_ | I could try to help/do some tests if you want to implement it (just need to find a board with a PSRAM or order some components) | 18:39 |
| SpaceCoaster | Cheers, had some headers for my snickerdoodle, so I made up a board with Psram attached. It looks like the icebreaker-bitsy has PSRAM. A different brand but the manuals are cut and paste for the two Psram chips. | 18:42 |
| SpaceCoaster | Mine is aps6404l3sqr and bitsy is LY68L6400 | 18:43 |
| tnt | _florent_: do you have a bitsy ? I have quite a few extra, I can send you one if you don't. | 18:43 |
| SpaceCoaster | tnt: is that the right chip? I just zoomed in on the photos. | 18:44 |
| tnt | huh, that's one of them. TBH I have no idea which one I used when I assembled that batch, they're all the same ... | 18:45 |
| _florent_ | tnt: I don't have it no, this could be useful for PSRAM support and other things (I use my icebreaker non-bitsy a lot :)) | 18:47 |
| _florent_ | tnt: but happy to pay for it | 18:47 |
| tnt | _florent_: heh, no it's fine, take it as a small thanks for all the free litex support :) Just send me a shipping address in PM or by mail 246tnt at gmail | 18:49 |
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| _florent_ | tnt: Thanks | 20:36 |
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| yootis | _florent_: That latest commit doesn't actually fix it, the problem persists. | 23:36 |
| SpaceCoaster | Odd thing, the bios runs a spiflash speed test on boot but the output doesn’t appear. Maybe it is before the UART is initialized. I don’t really need this invisible speed test. | 23:41 |
| SpaceCoaster | Or maybe it doesn’t, ignore me, | 23:42 |
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| yootis | what is the delay it is actually trying to find? Is it attempting to measure something? | 23:52 |
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