linux-kernel - [PATCH v6 2/6] dt-bindings: fsi: Document the IBM I2C Responder virtual FSI master

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Date:   Wed, 22 Feb 2023 13:23:50 -0600
From:   Eddie James <eajames@...ux.ibm.com>
To:     linux-fsi@...ts.ozlabs.org
Cc:     rostedt@...dmis.org, linux-trace-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        mhiramat@...nel.org, alistair@...ple.id.au, joel@....id.au,
        jk@...abs.org, andrew@...id.au, robh+dt@...nel.org,
        krzysztof.kozlowski+dt@...aro.org, eajames@...ux.ibm.com
Subject: [PATCH v6 2/6] dt-bindings: fsi: Document the IBM I2C Responder virtual FSI master

The I2C Responder translates I2C commands to CFAM or SCOM operations,
effectively implementing an FSI master.

Signed-off-by: Eddie James <eajames@...ux.ibm.com>
Reviewed-by: Andrew Jeffery <andrew@...id.au>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
---
 .../bindings/fsi/ibm,i2cr-fsi-master.yaml     | 41 +++++++++++++++++++
 1 file changed, 41 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/fsi/ibm,i2cr-fsi-master.yaml

diff --git a/Documentation/devicetree/bindings/fsi/ibm,i2cr-fsi-master.yaml b/Documentation/devicetree/bindings/fsi/ibm,i2cr-fsi-master.yaml
new file mode 100644
index 000000000000..442cecdc57cb
--- /dev/null
+++ b/Documentation/devicetree/bindings/fsi/ibm,i2cr-fsi-master.yaml
@@ -0,0 +1,41 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/fsi/ibm,i2cr-fsi-master.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: IBM I2C Responder virtual FSI master
+
+maintainers:
+  - Eddie James <eajames@...ux.ibm.com>
+
+description: |
+  The I2C Responder (I2CR) is a an I2C device that's connected to an FSI CFAM
+  (see fsi.txt). The I2CR translates I2C bus operations to FSI CFAM reads and
+  writes or SCOM operations, thereby acting as an FSI master.
+
+properties:
+  compatible:
+    enum:
+      - ibm,i2cr-fsi-master
+
+  reg:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+
+additionalProperties: false
+
+examples:
+  - |
+    i2c {
+      #address-cells = <1>;
+      #size-cells = <0>;
+
+      i2cr@20 {
+        compatible = "ibm,i2cr-fsi-master";
+        reg = <0x20>;
+      };
+    };
-- 
2.31.1