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authorBenjamin Herrenschmidt <benh@kernel.crashing.org>2014-09-04 17:44:18 +1000
committerDave Airlie <airlied@redhat.com>2014-09-15 11:37:43 +1000
commit0dd68309b9c516eac76549b71f68f01f57bb0c71 (patch)
tree66b958e685c72bb58004f344fd04c7406073d792 /drivers/dio
parent98faa78ce7f1f986e11e7805d31b409782a6d2d4 (diff)
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drm/ast: Try to use MMIO registers when PIO isn't supported
If the PIO resources haven't been assigned, then we have no choice but try to use the MMIO version. This is the case for example on POWER8 which doesn't support PIO at all. Chips rev 0x20 or later have MMIO decoding enabled by default. Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org> Signed-off-by: Dave Airlie <airlied@redhat.com>
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