tree de7ce4def3bb48c1125b0aaf505ec29df9924e42
parent 0ffa0285052607513a29f529ddb5061c907fd8a6
author David Brownell <david-b@pacbell.net> 1171270366 -0800
committer Linus Torvalds <torvalds@woody.linux-foundation.org> 1171302511 -0800

[PATCH] SPI doc clarifications

This clarifies some aspects of the SPI programming interface, based on
feedback from Hans-Peter Nilsson.  The in-memory representation of words is
right-aligned, so for example a twelve bit word is stored using sixteen bits
with four undefined bits in the MSB.  And controller drivers must reject
protocol tweaking modes they do not support.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>