[ARM] 4864/1: Enable write buffer coalescing on IOP
Some bootloaders are disabling write buffer coalescing. Enable it back
under linux.
Signed-off-by: Arnaud Patard <arnaud.patard@rtp-net.org>
Signed-off-by: Russell King <rmk+kernel@arm.linux.org.uk>
diff --git a/arch/arm/mm/proc-xscale.S b/arch/arm/mm/proc-xscale.S
index c156ddab..016690b 100644
--- a/arch/arm/mm/proc-xscale.S
+++ b/arch/arm/mm/proc-xscale.S
@@ -114,6 +114,10 @@
* Nothing too exciting at the moment
*/
ENTRY(cpu_xscale_proc_init)
+ @ enable write buffer coalescing. Some bootloader disable it
+ mrc p15, 0, r1, c1, c0, 1
+ bic r1, r1, #1
+ mcr p15, 0, r1, c1, c0, 1
mov pc, lr
/*