[PATCH V7 1/4] dt-bindings: i3c: Add AMD I3C master controller support

Manikanta Guntupalli
2025-09-23T15:46:24Z

Add device tree binding documentation for the AMD I3C master
controller version 1.0.

Signed-off-by: Manikanta Guntupalli <manikanta.guntupalli@amd.com>
Reviewed-by: Rob Herring (Arm) <robh@kernel.org>
---
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.

Changes for V6:
Corrected the file name for $id in yaml to fix the dtschema warning.

Changes for V7:
Added i3c controller version details to commit description.
Added Reviewed-by tag.
---
.../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..17c63807dbcf
--- /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
+---
+$id: http://devicetree.org/schemas/i3c/xlnx,axi-i3c-1.0.yaml#
+$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