Blackfin arch: check the EXTBANKS field of the DDRCTL1 register to see if we are using both memory banks

Signed-off-by: Mike Frysinger <vapier.adi@gmail.com>
Signed-off-by: Bryan Wu <cooloney@kernel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/arch/blackfin/kernel/setup.c b/arch/blackfin/kernel/setup.c
index 8671d1db1f99..102a9db98559 100644
--- a/arch/blackfin/kernel/setup.c
+++ b/arch/blackfin/kernel/setup.c
@@ -700,6 +700,8 @@ static inline int __init get_mem_size(void)
                 case DEVWD_8:  ret *= 2;
                 case DEVWD_16: break;
         }
+        if ((ddrctl & 0xc000) == 0x4000)
+                ret *= 2;
         return ret;
 #endif
         BUG();