diff --git a/drivers/memory/tegra/tegra20-emc.c b/drivers/memory/tegra/tegra20-emc.c
index 497b6edbf3ca..25ba3c5e4ad6 100644
--- a/drivers/memory/tegra/tegra20-emc.c
+++ b/drivers/memory/tegra/tegra20-emc.c
@@ -540,7 +540,7 @@ static int emc_read_lpddr_mode_register(struct tegra_emc *emc,
 					unsigned int register_addr,
 					unsigned int *register_data)
 {
-	u32 memory_dev = emem_dev + 1;
+	u32 memory_dev = emem_dev ? 1 : 2;
 	u32 val, mr_mask = 0xff;
 	int err;