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authorMichael Buesch <mb@bu3sch.de>2009-04-02 16:57:07 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2009-04-02 19:04:51 -0700
commitbfb9bcdbda9a61bca469bf899a589918c60c4c18 (patch)
tree40b28178c9d969c94e2039b27ac213cab5de0e79 /drivers/pnp
parent8a0cecffeb52363a57257bbbbd58f4c4537a75bb (diff)
spi-gpio: allow operation without CS signal
Change spi-gpio so that it is possible to drive SPI communications over GPIO without the need for a chipselect signal. This is useful in very small setups where there's only one slave device on the bus. This patch does not affect existing setups. I use this for a tiny communication channel between an embedded device and a microcontroller. There are not enough GPIOs available for chipselect and it's not needed anyway in this case. Signed-off-by: Michael Buesch <mb@bu3sch.de> Cc: David Brownell <david-b@pacbell.net> Signed-off-by: Andrew Morton <akpm@linux-foundation.org> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'drivers/pnp')
0 files changed, 0 insertions, 0 deletions