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

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Message-ID: <20220628054338.1631516-4-appana.durga.rao@xilinx.com>
Date:   Tue, 28 Jun 2022 11:13:37 +0530
From:   Appana Durga Kedareswara rao <appana.durga.rao@...inx.com>
To:     <robh+dt@...nel.org>, <krzysztof.kozlowski+dt@...aro.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <appana.durga.rao@...inx.com>, <michal.simek@...inx.com>,
        <derek.kiernan@...inx.com>, <dragan.cvetic@...inx.com>,
        <arnd@...db.de>, <gregkh@...uxfoundation.org>,
        <linux-arm-kernel@...ts.infradead.org>
CC:     <git@....com>, <git@...inx.com>
Subject: [PATCH 3/4] dt-bindings: misc: tmr-inject: Add device-tree binding for TMR Inject

This commit adds documentation for Triple Modular Redundancy (TMR)
Inject IP.

Signed-off-by: Appana Durga Kedareswara rao <appana.durga.rao@...inx.com>
---
 .../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..4daf9539000b
--- /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 TMR Inject Device Tree Bindings
+
+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 used when injecting faults. The fault inject write data least
+      significant byte (bits 7:0) must match this number to have any effect.
+    $ref: /schemas/types.yaml#/definitions/uint32
+
+required:
+  - compatible
+  - reg
+  - xlnx,magic
+
+additionalProperties: false
+
+examples:
+  - |
+    tmr-inject@...30000 {
+            compatible = "xlnx,tmr-inject-1.0";
+            reg = <0x44a10000 0x10000>;
+            xlnx,magic = <0x46>;
+    };
-- 
2.25.1