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powerpc/powernv: Add support for indirect XSCOM via debugfs
authorBenjamin Herrenschmidt <benh@kernel.crashing.org>
Thu, 10 Oct 2013 08:19:15 +0000 (19:19 +1100)
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>
Wed, 6 Nov 2013 03:13:51 +0000 (14:13 +1100)
Indirect XSCOM addresses normally have the top bit set (of the 64-bit
address). This doesn't work via the normal debugfs interface, so we use
a different encoding, which we need to convert before calling OPAL.

Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

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