On 12-09-19, 13:47, Baolin Wang wrote: > From: Zhenfang Wang <zhenfang.w...@unisoc.com> > > We will set the link-list pointer register point to next link-list > configuration's physical address, which can load DMA configuration > from the link-list node automatically. > > But the link-list node's physical address can be larger than 32bits, > and now Spreadtrum DMA driver only supports 32bits physical address, > which may cause loading a incorrect DMA configuration when starting > the link-list transfer mode. According to the DMA datasheet, we can > use SRC_BLK_STEP register (bit28 - bit31) to save the high bits of the > link-list node's physical address to fix this issue.
Applied, thanks -- ~Vinod
