Hi Angelo, On Mon, Oct 31, 2016 at 8:26 AM, Angelo Dureghello <angelo@xxxxxxxx> wrote:
i have still a last issue open on mcf5307-based "amcore" board i would like to fix, and need a suggestion: at design time, i wired the 32bit parallel data bus from cpu to the ethernet chip as "straight" (D0 to D0, ... D32 to D32). dm9000 driver btw works for little-endian cpu only. To have it working, i actually keep a byte "swap" patch in the driver. Since i guess i cannot pretend any driver patch for this case, i am planning a new pcb version with 32bit data bus bytes swapped in hardware. What do you think ?
BenH has written some excellent background information about this: Big and Little Endian inside / out https://www.linuxplumbersconf.org/2012/wp-content/uploads/2012/09/2012-lpc-ref-big-little-endian-herrenschmidt.odp https://www.youtube.com/watch?v=oBSuXP-1Tc0 Happy reading! Gr{oetje,eeting}s, Geert -- Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@xxxxxxxxxxxxxx In personal conversations with technical people, I call myself a hacker. But when I'm talking to journalists I just say "programmer" or something like that. -- Linus Torvalds -- To unsubscribe from this list: send the line "unsubscribe linux-m68k" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
