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| somlo | Flea86: doesn't help to lower the sd clock rate | 01:02 |
|---|---|---|
| somlo | I'm still hoping it's a simple matter of having the wrong d1, d2 pins | 01:03 |
| somlo | (tried swapping them, that didn't work either :) ) | 01:03 |
| Flea86 | smolo: Hmm | 01:04 |
| Flea86 | smolo: Does that board have the correct external pullups per the SDHC spec? | 01:05 |
| Flea86 | or any other obscure stuff that prevent it from working in sd mode | 01:06 |
| Flea86 | Supply decoupling good? | 01:06 |
| Flea86 | idk | 01:06 |
| Flea86 | Does it have series resistors on the signal lines? If so, what value are they and are they correct? | 01:08 |
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| somlo | soon as I get the actual schematics I'll check | 03:59 |
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| Melkhior | somlo: +1 on double-checking the pull-ups ; in particular if you expect the FPGA to do it, double-check the Misc properties... | 12:05 |
| Melkhior | had the same issue some time ago, turned out Misc("PULLUP") is valid syntax but does nothing, needed Misc("PULLUP True") ... | 12:06 |
| Melkhior | 7 series (Artix-7) in my case | 12:07 |
| somlo | the sdcard `cmd` and `data` pins do have `Misc("PULLUP True")` in the platform file | 13:46 |
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| somlo | \o/ holy crap, sdcard works (in sd-mode) on the stlv-7325-v2! | 23:35 |
| somlo | after pushing the bitstream to the board, I have to eject the card first, then push it back in, *then* it works :D | 23:35 |
| somlo | the stlv-7235-v2 does *not* have a physical card-detect pin, so the gateware has to assume the sdcard is "inserted" at all times | 23:36 |
| somlo | not sure if that has anything to do with the "push bitstream, eject and re-insert sdcard, then boot from it" dance, but there we go :) | 23:36 |
| Flea86 | Aha | 23:39 |
| somlo | still no sata or rgmii ethernet, but progress! | 23:44 |
| Flea86 | somlo: No way to fudge that, such that when power to the FPGA board is applied it configures the sd properly? | 23:44 |
| somlo | well, it might just be a power-on thing, because ever since I did that song-and-dance the first time, subsequent bitstream pushes (with openocd) allow me to boot from sdcard without ejecting/reinserting | 23:45 |
| somlo | like somewhere along the way I "confused" the actual sdcard, which needed to be power-cycled itself once before it started working with otherwise "good" bitstream | 23:46 |
| somlo | and the bitstream turned "good" a long time ago, but I couldn't tell b/c my sdcard was "stuck"... Fun... | 23:46 |
| somlo | hmmm | 23:47 |
| somlo | that makes me wonder, maybe I need to power-cycle my sata disk too :D | 23:47 |
| somlo | nope, no such luck :D | 23:48 |
| Flea86 | lol | 23:49 |
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