linux-kernel - [PATCH v2 3/4] dt-bindings: misc: tmr-inject: Add device-tree binding for TMR Inject

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Message-ID: <20220720060016.1646317-4-appana.durga.kedareswara.rao@amd.com>
Date:   Wed, 20 Jul 2022 11:30:15 +0530
From:   Appana Durga Kedareswara rao 
        <appana.durga.kedareswara.rao@....com>
To:     <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <michal.simek@...inx.com>, <derek.kiernan@...inx.com>,
        <dragan.cvetic@...inx.com>, <arnd@...db.de>,
        <gregkh@...uxfoundation.org>
CC:     <appanad@....com>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <git@....com>,
        <git@...inx.com>,
        Appana Durga Kedareswara rao <appana.durga.rao@...inx.com>
Subject: [PATCH v2 3/4] dt-bindings: misc: tmr-inject: Add device-tree binding for TMR Inject

From: Appana Durga Kedareswara rao <appana.durga.rao@...inx.com>

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 <appana.durga.kedareswara.rao@....com>
Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@...inx.com>
---
Changes for v2:
--> Improved description for xlnx,magic property as suggested by Krzysztof.
--> Fixed style issues (indentation of example node title description
etc..)
 .../bindings/misc/xlnx,tmr-inject.yaml        | 47 +++++++++++++++++++
 1 file changed, 47 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/misc/xlnx,tmr-inject.yaml

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..cb14ea73fb4c
--- /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 <appana.durga.rao@...inx.com>
+
+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@...30000 {
+        compatible = "xlnx,tmr-inject-1.0";
+        reg = <0x44a10000 0x10000>;
+        xlnx,magic = <0x46>;
+    };
-- 
2.25.1