dt-bindings: misc: tmr-inject: Add device-tree binding for TMR Inject

The Triple Modular Redundancy(TMR) Inject core provides functional fault
injection by changing selected MicroBlaze instructions, which provides the
possibility to verify that the TMR subsystem error detection and fault
recovery logic is working properly.

Signed-off-by: Appana Durga Kedareswara rao <[email protected]>
Reviewed-by: Krzysztof Kozlowski <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Greg Kroah-Hartman <[email protected]>

1 files changed, 47 insertions, 0 deletions

diff --git a/Documentation/devicetree/bindings/misc/xlnx,tmr-inject.yaml b/Documentation/devicetree/bindings/misc/xlnx,tmr-inject.yaml
new file mode 100644
index 000000000000..1b6020e4ec27
--- /dev/null
+++ b/Documentation/devicetree/bindings/misc/xlnx,tmr-inject.yaml
@@ -0,0 +1,47 @@
+# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/misc/xlnx,tmr-inject.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Xilinx Triple Modular Redundancy(TMR) Inject IP
+
+maintainers:
+  - Appana Durga Kedareswara rao <[email protected]>
+
+description: |
+  The Triple Modular Redundancy(TMR) Inject core provides functional fault
+  injection by changing selected MicroBlaze instructions, which provides the
+  possibility to verify that the TMR subsystem error detection and fault
+  recovery logic is working properly.
+
+properties:
+  compatible:
+    enum:
+      - xlnx,tmr-inject-1.0
+
+  reg:
+    maxItems: 1
+
+  xlnx,magic:
+    minimum: 0
+    maximum: 255
+    description: |
+      Magic number, When configured it allows the controller to perform
+      recovery.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+  - compatible
+  - reg
+  - xlnx,magic
+
+additionalProperties: false
+
+examples:
+  - |
+    fault-inject@44a30000 {
+        compatible = "xlnx,tmr-inject-1.0";
+        reg = <0x44a10000 0x10000>;
+        xlnx,magic = <0x46>;
+    };