diff --git a/src/soc/intel/alderlake/meminit.c b/src/soc/intel/alderlake/meminit.c
index 46f28f09d3..157aa65f4c 100644
--- a/src/soc/intel/alderlake/meminit.c
+++ b/src/soc/intel/alderlake/meminit.c
@@ -70,8 +70,8 @@ static const struct soc_mem_cfg soc_mem_cfg[] = {
 			 * configuration.
 			 */
 			.half_channel = BIT(0),
-			/* In mixed topologies, either channel 0 or 1 can be memory-down. */
-			.mixed_topo = BIT(0) | BIT(1),
+			/* In mixed topologies, channel 0 is memory-down. */
+			.mixed_topo = BIT(0),
 		},
 	},
 	[MEM_TYPE_LP4X] = {
diff --git a/src/soc/intel/meteorlake/meminit.c b/src/soc/intel/meteorlake/meminit.c
index 2b2edcca38..e905874171 100644
--- a/src/soc/intel/meteorlake/meminit.c
+++ b/src/soc/intel/meteorlake/meminit.c
@@ -46,8 +46,8 @@ static const struct soc_mem_cfg soc_mem_cfg[] = {
 			 * configuration.
 			 */
 			.half_channel = BIT(0),
-			/* In mixed topologies, either channel 0 or 1 can be memory-down. */
-			.mixed_topo = BIT(0) | BIT(1),
+			/* In mixed topologies, channel 0 is memory-down. */
+			.mixed_topo = BIT(0),
 		},
 	},
 	[MEM_TYPE_LP5X] = {