diff --git a/Documentation/devicetree/bindings/soc/apple/apple,t8140-mcc.yaml b/Documentation/devicetree/bindings/soc/apple/apple,t8140-mcc.yaml
index 11f103732ef63..63767db0cea1a 100644
--- a/Documentation/devicetree/bindings/soc/apple/apple,t8140-mcc.yaml
+++ b/Documentation/devicetree/bindings/soc/apple/apple,t8140-mcc.yaml
@@ -28,7 +28,7 @@ properties:
   reg:
     description: Per-plane blocks on T8140, or the two multicast apertures on T8132.
     minItems: 1
-    maxItems: 16
+    maxItems: 32
 
   nonposted-mmio: true
 
diff --git a/drivers/soc/apple/mcc.c b/drivers/soc/apple/mcc.c
index 91fc698f43a72..3b9b47a6d6213 100644
--- a/drivers/soc/apple/mcc.c
+++ b/drivers/soc/apple/mcc.c
@@ -30,7 +30,7 @@
 #define MCC_CACHE_FLUSH		0x2844
 #define MCC_CACHE_FLUSH_BUSY	BIT(0)
 
-#define MCC_MAX_PLANES		16
+#define MCC_MAX_PLANES		32
 #define MCC_FLUSH_TIMEOUT_US	100000
 
 struct apple_mcc {