Commits
![Zhenfang Wang](https://secure.gravatar.com/avatar/4c4e94561185c09dadb18afc0c98a242.jpg?s=96&d=mm)
Zhenfang Wang committed 8b6bc5fd71e
dmaengine: sprd: Fix the link-list pointer register configuration issue 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. Fixes: 4ac695464763 ("dmaengine: sprd: Support DMA link-list mode") Signed-off-by: Zhenfang Wang <zhenfang.wang@unisoc.com> Signed-off-by: Baolin Wang <baolin.wang@linaro.org> Link: https://lore.kernel.org/r/eadfe9295499efa003e1c344e67e2890f9d1d780.1568267061.git.baolin.wang@linaro.org Signed-off-by: Vinod Koul <vkoul@kernel.org>