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| somlo | \o/ https://lkml.org/lkml/2022/1/24/607 | 15:11 |
|---|---|---|
| tpb | Title: LKML: Ulf Hansson: Re: [PATCH v14 0/3] mmc: Add LiteSDCard mmc driver (at lkml.org) | 15:11 |
| somlo | might be another while until it shows up in the official tree, but at this point it's just a matter of waiting :) | 15:12 |
| _florent_ | somlo: Great work! Thanks | 15:46 |
| _florent_ | (somlo: Still need to test LiteSATA on NexysVideo, will do before leaving the office...) | 15:47 |
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| somlo | _florent_: do you happen to know, should there be a direct contact between the dp0_[c2m|m2c]_[p|n] fpga pins connected to the LPC/FMC connector and the sata [a|b][+|-] (tx/rx pairs)? Or is there usually a capacitor connected inline? | 17:09 |
| somlo | I've been thinking of taking an ohm-meter to see if my extension card connects the right fmc pins to the right sata pins, but that may not be conclusive if it's not supposed to be a direct electric contact :) | 17:09 |
| somlo | and I noticed some sort of inline components soldered on the adapter card close to the SATA pin leads :) | 17:10 |
| somlo | I'm very much a beginner when it comes to proper electrical engineering :) | 17:10 |
| somlo | specifically, row-C 1,2 and 6,7 (https://fmchub.github.io/appendix/VITA57_FMC_HPC_LPC_SIGNALS_AND_PINOUT.html) vs. the sata pinout scheme (http://www.interfacebus.com/SATA_Pinout.html) | 17:13 |
| somlo | ... and I've convinced myself that the fpga-to-fmc pins are correct here: https://github.com/litex-hub/litex-boards/blob/master/litex_boards/platforms/digilent_nexys_video.py#L184 | 17:14 |
| somlo | so it's a matter of whether I have a broken fmc-2-sata adapter, because the wiring clues all seem to check out and be correct | 17:15 |
| somlo | _florent_: there *does* appear to be a 100nF capacitor inline between the FMC connector and whatever's on the other side (sata pins) in the schematic on page2 of http://mirror.ini.cmu.edu/litex/HTG-FMC-X4SFP-X4SATA.pdf | 17:26 |
| somlo | so my ohm-meter plan to check for connectivity is likely not going to work :D | 17:26 |
| tcal | In a build of mine that /uses/ LiteX, I'm hitting a typo in the meson.build file for picolibc/data: `pythondata_software_picolibc/data/meson.build:737:10: ERROR: configuration_data.set got unknown keyword arguments "descrption"` (this typo actually occurs twice). But for some reason I don't get an error when doing a pure LiteX build, even though the typo is there as well. SOLUTION: I was using the lastest `meson` from its | 17:52 |
| tcal | repo (the pure LiteX build was using meson via pip3). When I backed off to the 0.61.1 tag, it worked again. I've opened an issue for picolibc. | 17:52 |
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| Johnsel | hello everyone | 19:43 |
| somlo | _florent_: hmm, the antmicro fmc adapter schematics show 10nF capacitors (as opposed to the 100nF ones used on the HTG adapter) -- wonder what that means for the target operating SATA frequency being supported... | 19:43 |
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| Johnsel | :( | 20:58 |
| Johnsel | Error (170012): Fitter requires 988 LABs to implement the design, but the device contains only 963 LABs | 20:58 |
| Johnsel | I am trying to run linux-on-litex on an Arduino MKR Vidor 4000 | 20:59 |
| Johnsel | which is an altera cyclone 10 LP device | 20:59 |
| Johnsel | any ideas where/how to optimize? | 21:00 |
| Johnsel | platform/target are already minimal (1 clock, sdram and serial only) | 21:01 |
| Johnsel | halving L2 seemed to have done the trick | 21:11 |
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