1 files changed, 39 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/firmware/amlogic,meson-gxbb-sm.yaml b/Documentation/devicetree/bindings/firmware/amlogic,meson-gxbb-sm.yaml
new file mode 100644
index 000000000000..8f50e698760e
--- /dev/null
+++ b/Documentation/devicetree/bindings/firmware/amlogic,meson-gxbb-sm.yaml
@@ -0,0 +1,39 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/firmware/amlogic,meson-gxbb-sm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Amlogic Secure Monitor (SM)
+
+description:
+  In the Amlogic SoCs the Secure Monitor code is used to provide access to the
+  NVMEM, enable JTAG, set USB boot, etc...
+
+maintainers:
+  - Neil Armstrong <neil.armstrong@linaro.org>
+
+properties:
+  compatible:
+    oneOf:
+      - const: amlogic,meson-gxbb-sm
+      - items:
+          - const: amlogic,meson-gx-sm
+          - const: amlogic,meson-gxbb-sm
+
+  power-controller:
+    type: object
+    $ref: /schemas/power/amlogic,meson-sec-pwrc.yaml#
+
+required:
+  - compatible
+
+additionalProperties: false
+
+examples:
+  - |
+    firmware {
+        secure-monitor {
+            compatible = "amlogic,meson-gxbb-sm";
+        };
+    };