Fix FlexSPI LUT access

Fix the SPI dual output mode. There was a bug, where the output lines were tri-state during the mode cycle, which left the flash chip in read mode on some circumstances. Fix that by driving the lines low during that cycle. Additionally, there was a bug in the unlock code (which didn't affect anything, because the LUTs were not locked). Since this commit, we also lock the LUTs after we've written them. Signed-off-by: Michael Walle <[email protected]>
kontron · Aug 23, 2019 · f85ab17 · f85ab17
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