ARM: bcm281xx: Add DT support for SMC handler

- Adds devicetree binding and documentation for the smc handler

Updates from V1:
- Created this separate patch for the DT portion
- Added SoC compatible to smc binding

Signed-off-by: Christian Daudt <csd@broadcom.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>

diff --git a/Documentation/devicetree/bindings/misc/smc.txt b/Documentation/devicetree/bindings/misc/smc.txt
new file mode 100644 (file)
index 0000000..02b4281
--- /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 ad13588..be2a261 100644 (file)
--- 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";