Add device tree binding documentation for the AMD I3C master controller.

Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
---
Changes for V2:
Updated commit subject and description.
Moved allOf to after required.
Removed xlnx,num-targets property.

Changes for V3:
Updated commit description.
Corrected the order of properties and removed resets property.
Added compatible to required list.
Added interrupts to example.

Changes for V4:
Added h/w documentation details.

Changes for V5:
Renamed the xlnx,axi-i3c.yaml file into xlnx,axi-i3c-1.0.yaml.
---
 .../bindings/i3c/xlnx,axi-i3c-1.0.yaml        | 55 +++++++++++++++++++
 1 file changed, 55 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/i3c/xlnx,axi-i3c-1.0.yaml

diff --git a/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c-1.0.yaml b/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c-1.0.yaml
new file mode 100644
index 000000000000..1daeb20205ac
--- /dev/null
+++ b/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c-1.0.yaml
@@ -0,0 +1,55 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i3c/xlnx,axi-i3c.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: AMD I3C master
+
+maintainers:
+  - Manikanta Guntupalli <manikanta.guntupalli@amd.com>
+
+description:
+  The AXI-I3C IP is an I3C Controller with an AXI4-Lite interface, compatible
+  with the MIPI I3C Specification v1.1.1. The design includes bidirectional I/O
+  buffers that implement open collector drivers for the SDA and SCL signals.
+  External pull-up resistors are required to properly hold the bus at a Logic-1
+  level when the drivers are released.
+
+  For more details, please see https://docs.amd.com/r/en-US/pg439-axi-i3c
+
+properties:
+  compatible:
+    const: xlnx,axi-i3c-1.0
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+allOf:
+  - $ref: i3c.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    i3c@80000000 {
+        compatible = "xlnx,axi-i3c-1.0";
+        reg = <0x80000000 0x10000>;
+        clocks = <&zynqmp_clk 71>;
+        interrupt-parent = <&imux>;
+        interrupts = <0 89 4>;
+        #address-cells = <3>;
+        #size-cells = <0>;
+    };
+...
-- 
2.34.1

On Mon, 08 Sep 2025 16:51:16 +0530, Manikanta Guntupalli wrote:
> Add device tree binding documentation for the AMD I3C master controller.
> 
> Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
> ---
> Changes for V2:
> Updated commit subject and description.
> Moved allOf to after required.
> Removed xlnx,num-targets property.
> 
> Changes for V3:
> Updated commit description.
> Corrected the order of properties and removed resets property.
> Added compatible to required list.
> Added interrupts to example.
> 
> Changes for V4:
> Added h/w documentation details.
> 
> Changes for V5:
> Renamed the xlnx,axi-i3c.yaml file into xlnx,axi-i3c-1.0.yaml.
> ---
>  .../bindings/i3c/xlnx,axi-i3c-1.0.yaml        | 55 +++++++++++++++++++
>  1 file changed, 55 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/i3c/xlnx,axi-i3c-1.0.yaml
> 

My bot found errors running 'make dt_binding_check' on your patch:

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c-1.0.yaml: $id: Cannot determine base path from $id, relative path/filename doesn't match actual path or filename
 	 $id: http://devicetree.org/schemas/i3c/xlnx,axi-i3c.yaml
 	file: /builds/robherring/dt-review-ci/linux/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c-1.0.yaml

doc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/project/devicetree-bindings/patch/20250908112117.205270-2-manikanta.guntupalli@amd.com

The base for the series is generally the latest rc1. A different dependency
should be noted in *this* patch.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit after running the above command yourself. Note
that DT_SCHEMA_FILES can be set to your schema file to speed up checking
your schema. However, it must be unset to test all examples with your schema.