On Friday 24 June 2016, Pavel Pisa <ppisa4li...@pikron.com> wrote: > Hello Deval Shah and others, > > On Friday 24 of June 2016 10:45:34 Deval Shah wrote: > > Hello all, > > > > I have successfully ported the bcm283x_dwcotg driver for the Raspberry > Pi. > > Changes are shown in the commit > > > > https://github.com/deval-maker/rtems-libbsd/commit/fd650f7ded413a0d891b5395 > >abb0c8768d71acc7. I need feedback on the code. > > > > Also am getting error in mailbox functions (failed to set power state, > > err=-2). As far as I know Pavel and Mudit are looking into this problem. > I > > can not move to next part before solving this issue. Please let me know > how > > can I contribute if the problem is not already solved. > > I have pushes workaround patch to mainline to ensure that > your projects are not blocked by mailbox access problem. > So the problem should be solved for you. > > I am currently using latest mainline rtems kernel. And I am still getting this error. Any other possible reason?
> I would work on suggestions/proposal of patches to fix cache > manager for mainline but testing and acknowledge would require > help from more people and would take time. > > Your peripherals needs probably to access memory through DMA. > If you use DMA then check if ARM CP15 operations are used > directly for data synchronization (they work correctly) > or if you use portable > > rtems_cache_flush_multiple_data_lines(buf, size); > rtems_cache_invalidate_multiple_data_lines(buf, size); > > thelater are not working on RPi for now. But I consider these > after fixing as better choice for long term goal. > > Best wishes, > > Pavel >
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