path: root/mm
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authorLinus Walleij <>2011-08-12 13:54:42 +0200
committerGreg Kroah-Hartman <>2011-11-11 09:43:31 -0800
commitf9f92901e2810448ed31691613a78cc232e4bc84 (patch)
tree3276a4e702615f6415b5d82b0d435f581dca2229 /mm
parent859967a0ffdb214e97ea202bcafc7bf41a73bb34 (diff)
ARM: mach-ux500: unlock I&D l2x0 caches before init
commit 1bf6d2c1bb23533af6930581cc39b74685bc29de upstream. Apparently U8500 U-Boot versions may leave the l2x0 locked down before executing the kernel. Make sure we unlock it before we initialize the l2x0. This fixes a performance problem reported by Jan Rinze. The l2x0 core has been modified to unlock the l2x0 by default, but it will not touch the locking registers if the l2x0 was already enabled, as on the ux500, so we need this quirk to make sure it is properly turned off. Cc: Srinidhi Kasagar <> Cc: Rabin Vincent <> Cc: Adrian Bunk <> Reported-by: Jan Rinze <> Tested-by: Robert Marklund <> Signed-off-by: Linus Walleij <> Signed-off-by: Greg Kroah-Hartman <>
Diffstat (limited to 'mm')
0 files changed, 0 insertions, 0 deletions