On Monday, October 12, 2015 at 02:55:03 PM, Thomas Chou wrote: > Hi Marek,
Hi Thomas, > On 10/12/2015 06:32 PM, Marek Vasut wrote: > > Wouldn't invalidate_dcache_range() be enough here ? You don't care about > > the data in the newly allocated area at this point I guess -- either you > > fill them in and then flush, for DMA from CPU to device OR you receive > > data from device to CPU and then you invalidate this buffer again. > > No. We cannot use invalidate cache here. This is related to cache design > of nios2, kind of direct mapped cache. Can you please expand on this ? btw. I was thinking about this whole cache situation. Please don't get me wrong, my intention is not to put way more work unto you and/or grind you about minor details. I hope it doesn't look that way to you. Best regards, Marek Vasut _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot
