Hi, On Sun, Nov 27, 2011 at 5:41 PM, Tom Rini <[email protected]> wrote: > On Sun, Nov 27, 2011 at 8:09 AM, Wolfgang Denk <[email protected]> wrote: >> In message <[email protected]> you wrote: >>> DaVinci EMAC driver has no support for running with D-Cache enabled so >>> disable D-Cache on all DaVinci boards with EMAC device. >>> >>> Signed-off-by: Ilya Yanok <[email protected]> >>> --- >>> >>> I can't test it on any DaVinci boards right now but my understanding >>> is that currently EMAC driver can't work properly with D-Cache enabled.
[...] >> Why do we have to permanently disable the data cache just because the >> network driver is broken? USB is also broken, and probably other >> drivers as well. > > To be clear, the problem is that today the driver is broken (not cache > safe) and this series of patches fixes that problem. In doing so we > expose that arm926ejs doesn't have complete cache support today. What do you mean by "broken"? Is it "never working" or is it "working sometimes" or "not working under specific conditions"? I have a DA850 based board and I use the Davinci EMAC driver (CONFIG_DRIVER_TI_EMAC). I don't have these CONFIG_SYS_xCACHE_OFF defines in my board config file so I guess D-Cache is enabled. But Ethernet works fine, so what am I missing here? Is D-Cache disabled somewhere else? Regards, Christian _______________________________________________ U-Boot mailing list [email protected] http://lists.denx.de/mailman/listinfo/u-boot
