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| _florent_ | somlo: good news, we are now able to use your litex-hub/linux/litex-rebase branch with Linux-on-LiteX-VexRiscv, see: https://github.com/litex-hub/linux-on-litex-vexriscv/issues/176 | 11:06 |
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| somlo | _florent_: nice! | 11:57 |
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| somlo | _florent_: trying to understand what appears to be a "quirk" of the antmicro litesdcard linux driver: https://github.com/litex-hub/linux/blob/litex-rebase/drivers/mmc/host/litex_mmc.c#L246 | 13:41 |
| somlo | here's my theory, please confirm or set me straight: by default, the microSD card assumes/expects bus width 1 | 13:41 |
| somlo | but the litesdcard driver doesn't actually support that default option, and only works with bus width 4, at all times | 13:42 |
| somlo | (which might be a deviation from the "standard", but whatever :) | 13:42 |
| somlo | so, instead of waiting for the linux mmc subsystem to do a bunch of data transfers using default width 1, *then* setting width to 4 at some convenient later point, the litesdcard linux driver MUST inject an ACMD6 to set bus width before the very first data transfer, or else things won't work | 13:43 |
| somlo | if that's the case, I'll update the comments around that work to make it clear what's going on :) | 13:44 |
| somlo | but if I'm wrong about my assumptions above, please kick me :) | 13:44 |
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| cr1901_modern | _florent_: Since lxterm doesn't work any more on Mac OS or Windows, is there any possibility we could revert to the old single-process version or provide the single-process version as a workaround for now? https://github.com/enjoy-digital/litex/issues/743#issuecomment-755902333 | 16:36 |
| cr1901_modern | If not, I'm in the process of adding SFL support to an alternate serial terminal impl | 16:37 |
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| st-gourichon-fid | Hi! I reinstalled tools and observed allocation failures on ICE40. Very few ICESTORM_RAM used, but extremely high usage of ICESTORM_LC, up to 1383%. Reverting yosys from "Yosys 0.9+3830 (git sha1 b72c2946, clang 10.0.0-4ubuntu1 -fPIC -Os)" to "Yosys 0.9+2406 (git sha1 aafaeb66, clang 10.0.0-4ubuntu1 -fPIC -Os)" fixed the issue. | 17:24 |
| st-gourichon-fid | Open to any advice. | 17:24 |
| zyp | cr1901_modern, I'm also curious what the reasoning for switching from threading to multiprocessing is, looks like just a random change tacked onto another feature: https://github.com/enjoy-digital/litex/commit/feeb2f7 | 17:33 |
| zyp | I don't see multiprocessing giving an obvious benefit to anything in this situation, but the disadvantage is obvious | 17:37 |
| zyp | I should probably make that comment on the issue rather than on irc :) | 17:38 |
| _florent_ | cr1901_modern, zyp: thanks for the feedback, I'll look at that. In fact we should probably switch to asyncio | 17:56 |
| zyp | true, asyncio would probably be a better approach, but more work :) | 18:16 |
| _florent_ | cr1901_modern: I just reverted LiteXTerm to use threading with https://github.com/enjoy-digital/litex/commit/460fada3acbc6626f15388e4259bec0058b4a2d6 | 18:30 |
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| cr1901_modern | _florent_: Tyvm. A few lxterm changes incoming on my end | 19:20 |
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| cr1901_modern | Is the donut demo known to crash or otherwise produce some characters that aren't actually part of the donut? | 20:09 |
| cr1901_modern | Hmm, I guess the donut demo's speed sensitive | 20:22 |
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