2 files changed, 19 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/misc/smc.txt b/Documentation/devicetree/bindings/misc/smc.txt
new file mode 100644
index 000000000000..02b428136177
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/smc.txt
@@ -0,0 +1,14 @@
+Broadcom Secure Monitor Bounce buffer
+-----------------------------------------------------
+This binding defines the location of the bounce buffer
+used for non-secure to secure communications.
+
+Required properties:
+- compatible : "bcm,kona-smc"
+- reg : Location and size of bounce buffer
+
+Example:
+        smc@0x3404c000 {
+                compatible = "bcm,bcm11351-smc", "bcm,kona-smc";
+                reg = <0x3404c000 0x400>; //1 KiB in SRAM
+        };
diff --git a/arch/arm/boot/dts/bcm11351.dtsi b/arch/arm/boot/dts/bcm11351.dtsi
index ad135885bd2a..be2a26132376 100644
--- a/arch/arm/boot/dts/bcm11351.dtsi
+++ b/arch/arm/boot/dts/bcm11351.dtsi
@@ -31,6 +31,11 @@
                       <0x3ff00100 0x100>;
         };
 
+        smc@0x3404c000 {
+                compatible = "bcm,bcm11351-smc", "bcm,kona-smc";
+                reg = <0x3404c000 0x400>; //1 KiB in SRAM
+        };
+
         uart@3e000000 {
                 compatible = "bcm,bcm11351-dw-apb-uart", "snps,dw-apb-uart";
                 status = "disabled";