[ARM] Kirkwood: add support for L2 cache WB/WT selection

Feroceon L2 cache can work in eighther write through or write back mode
on Kirkwood. Add the option to configure this mode according to Kconfig.

Signed-off-by: Ronen Shitrit <rshitrit@marvell.com>
Signed-off-by: Nicolas Pitre <nico@marvell.com>

1 files changed, 8 insertions, 0 deletions

diff --git a/arch/arm/mm/Kconfig b/arch/arm/mm/Kconfig
index ed15f876c725..330814d1ee25 100644
--- a/arch/arm/mm/Kconfig
+++ b/arch/arm/mm/Kconfig
@@ -735,6 +735,14 @@ config CACHE_FEROCEON_L2
         help
           This option enables the Feroceon L2 cache controller.
 
+config CACHE_FEROCEON_L2_WRITETHROUGH
+        bool "Force Feroceon L2 cache write through"
+        depends on CACHE_FEROCEON_L2
+        default n
+        help
+          Say Y here to use the Feroceon L2 cache in writethrough mode.
+          Unless you specifically require this, say N for writeback mode.
+
 config CACHE_L2X0
         bool "Enable the L2x0 outer cache controller"
         depends on REALVIEW_EB_ARM11MP || MACH_REALVIEW_PB11MP || MACH_REALVIEW_PB1176