Files
OpenCellular/chip/stm32
Vincent Palatin eee7778fcf stm32: use D-cache on STM32H7
Enable the D-cache on STM32H7.
Use the ahb4 RAM region as uncached memory for DMA buffers.
Mark the serial, SPI and fingerprint DMA buffers as uncached for proper
operations.

Signed-off-by: Vincent Palatin <vpalatin@chromium.org>

BRANCH=poppy
BUG=b:78535052, b:75068419
TEST=On ZerbleBarn, run fingerprint match.
CQ-DEPEND=CL:*616448

Change-Id: Ia33496ebde3508d3427e522cc7ba060829f8f3fd
Reviewed-on: https://chromium-review.googlesource.com/1065822
Commit-Ready: ChromeOS CL Exonerator Bot <chromiumos-cl-exonerator@appspot.gserviceaccount.com>
Tested-by: Vincent Palatin <vpalatin@chromium.org>
Reviewed-by: Nicolas Boichat <drinkcat@chromium.org>
2018-06-04 17:23:27 -07:00
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