1 files changed, 10 insertions, 0 deletions

diff --git a/arch/mips/alchemy/common/setup.c b/arch/mips/alchemy/common/setup.c
index 62b4e7bbeab9..566a1743f685 100644
--- a/arch/mips/alchemy/common/setup.c
+++ b/arch/mips/alchemy/common/setup.c
@@ -30,6 +30,7 @@
 #include <linux/jiffies.h>
 #include <linux/module.h>
 
+#include <asm/dma-coherence.h>
 #include <asm/mipsregs.h>
 #include <asm/time.h>
 
@@ -59,6 +60,15 @@ void __init plat_mem_setup(void)
                 /* Clear to obtain best system bus performance */
                 clear_c0_config(1 << 19); /* Clear Config[OD] */
 
+        hw_coherentio = 0;
+        coherentio = 1;
+        switch (alchemy_get_cputype()) {
+        case ALCHEMY_CPU_AU1000:
+        case ALCHEMY_CPU_AU1500:
+        case ALCHEMY_CPU_AU1100:
+                coherentio = 0;
+        }
+
         board_setup();  /* board specific setup */
 
         /* IO/MEM resources. */