[PATCH v6 2/3] documentation: Add secure monitor binding documentation

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From: Carlo Caione <carlo@xxxxxxxxxxxx>

Add the binding documentation for the Amlogic secure monitor driver.

Signed-off-by: Carlo Caione <carlo@xxxxxxxxxxxx>
---
 .../bindings/firmware/meson/meson_sm.txt           | 29 ++++++++++++++++++++++
 1 file changed, 29 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/firmware/meson/meson_sm.txt

diff --git a/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
new file mode 100644
index 0000000..2d8f29d
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/meson/meson_sm.txt
@@ -0,0 +1,29 @@
+* Amlogic Secure Monitor
+
+In the Amlogic SoCs the Secure Monitor code is used to provide access to the
+NVMEM, enable JTAG, set USB boot, etc...
+
+Required properties for the secure monitor node:
+- compatible: Should be "amlogic,meson-gxbb-sm"
+
+Example:
+
+	firmware {
+		compatible = "simple-bus";
+
+		sm: secure-monitor {
+			compatible = "amlogic,meson-gxbb-sm";
+		};
+	};
+
+Example of the node using the secure monitor:
+
+	efuse: efuse {
+		compatible = "amlogic,meson-gxbb-efuse";
+		secure-monitor = <&sm>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		...
+	};
+
-- 
2.7.4

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