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Author SHA1 Message Date
Felix Radensky c1a676dfa2 powerpc/85xx: Workaround MPC8572/MPC8536 GPIO 1 errata. 
On MPC8572 and MPC8536 the status of GPIO pins configured
as output cannot be determined by reading GPDAT register.
Workaround by reading the status of input pins from GPDAT
and the status of output pins from a shadow register.

Signed-off-by: Felix Radensky <felix@embedded-sol.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
 2009-12-10 21:11:08 -06:00
Peter Korsgaard 1e16dfc1ba powerpc: gpio driver for mpc8349/8572/8610 and compatible 
Structured similar to the existing QE GPIO support.

Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
Acked-by: Anton Vorontsov <avorontsov@ru.mvista.com>
Signed-off-by: Kumar Gala <galak@kernel.crashing.org>
 2008-09-23 10:41:16 -05:00