ARM: bcm2835: Add the Raspberry Pi firmware driver

This gives us a function for making mailbox property channel requests
of the firmware, which is most notable in that it will let us get and
set clock rates.

Signed-off-by: Eric Anholt <eric@anholt.net>
Acked-by: Stephen Warren <swarren@wwwdotorg.org>
This commit is contained in:
Eric Anholt 2015-02-26 10:08:06 +00:00
commit 4e3d60656a
4 changed files with 383 additions and 0 deletions