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xtensa: xtfpga: fix hardware lockup caused by LCD driver

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LCD driver is always built for the XTFPGA platform, but its base address
is not configurable, and is wrong for ML605/KC705. Its initialization
locks up KC705 board hardware.

Make the whole driver optional, and its base address and bus width
configurable. Implement 4-bit bus access method.

Cc: stable@vger.kernel.org
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
This commit is contained in:
Max Filippov 2015-02-27 06:28:00 +03:00
commit 4949009eb8
5 changed files with 81 additions and 25 deletions
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