01:26 <futarisIRCcloud> dkozel: The Vivado and Android stuff looks interesting. https://twitter.com/derekkozel/status/1276861144519585793

09:49 <gregdavill> I've got an interesting bug, on the OrnageCrab I'm creating an SoC with LiteDRAM. If I load the same design to my board over JTAG it only passes the DDR3 init and memtest maybe 1/2 the time.

10:36 <tnt> gregdavill: something missing proper reset or not waiting for pll lock or something like that ?

10:38 <gregdavill> That's what I'm thinking. I'm looking through the clock/reset logic.

10:39 <gregdavill> The ECP5 also has some soft logic needed to sync up phase of the sclk and eclk signals.

13:08 <_florent_> scanakci: hi, yes sure, please create a PR for BlackParrot, i could see how to do to also clone basejump_stl with the blackparrot pythondata

13:10 <_florent_> gregdavill: i also have a similar issue this week when testing doing tests with the Trellisboard, but haven't been able to look at it yet

15:58 <somlo> _florent_: litex-hub/linux/litex-[vexriscv|rocket]-rebase branches are now updated to 5.8.0-rc2 (and ethernet & spi-sdcard still work with rocket)

16:01 <somlo> _florent_, benh: speaking of spi-sdcard, a bare-metal copy of boot.bin from sdcard to dram takes 10 seconds, whereas dd-ing the same file from /dev/mmcblk0p1 (mounted as /mnt) to /dev/null takes 9 minutes.

16:02 <somlo> _florent_, benh: I'm going to dig through the spi and mmc layers to see if I can spot any bottlenecks

16:03 <somlo> _florent_, benh: but before I go down that road, is it completely unreasonable that adding all the layers (spi, mmc, the linux vfs layer, etc.) on a cpu running at 60 MHz might just add enough overhead to explain a significant portion of that discrepancy ?

18:58 <_florent_> somlo: thanks for updating the branches, i'll continue working on LiteSDCard next week and also want to do tests with Linux and spisdcard.

18:59 <_florent_> the spisdcard in Linux should probably be faster, what really makes a difference is optimizing the block transfers functions:

18:59 <_florent_> https://github.com/enjoy-digital/litex/blob/master/litex/soc/software/liblitesdcard/spisdcard.c#L127-L161 of block read in the bios

18:59 <tpb> Title: litex/spisdcard.c at master · enjoy-digital/litex · GitHub (at github.com)

19:01 <_florent_> but not sure it's easy to do by reusing the SPI MMC linux driver directly

19:34 <dkozel> futarisIRCcloud: The Android work is really good. The Vivado piece was nice but pretty standard.