00:41 <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.

00:44 <SpaceCoaster> Also who is Sports Internet Solutions LLC on Amazon, they sell teensy, orange crab, fomu, tomu and PSRAM.

05:30 <yootis> _florent_: I tried the commit immediately before the one you mention, and it makes the DMA test work again.

09:01 <_florent_> yootis: Thanks, I'm going to look at this

13:33 <_florent_> yootis: The dma_test issue should be fixed with https://github.com/enjoy-digital/litepcie/commit/a40b2b837cfb046b3acc27b9c637f83b46ce4731

17:58 <SpaceCoaster> Should the PSRAM use the cache? The spiflash does but I am not sure what happens to writes.

18:06 <_florent_> SpaceCoaster: LiteSPIMMAP only support reads for now. Write should not be too complicated to add but hasn't been implemented yet.

18:36 <SpaceCoaster> I looked at it and it seemed possible.

18:39 <_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)

18:42 <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.

18:43 <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.

18:44 <SpaceCoaster> tnt: is that the right chip? I just zoomed in on the photos.

18:45 <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 ...

18:47 <_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

18:49 <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

20:36 <_florent_> tnt: Thanks

23:36 <yootis> _florent_: That latest commit doesn't actually fix it, the problem persists.

23:41 <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.

23:42 <SpaceCoaster> Or maybe it doesn’t, ignore me,

23:52 <yootis> what is the delay it is actually trying to find? Is it attempting to measure something?