[PATCH V2 1/2] dt-bindings: i3c: Add AMD I3C master controller support
From: Manikanta Guntupalli <hidden>
Date: 2025-08-29 17:13:55
Also in:
linux-hardening, linux-i3c, lkml
Subsystem:
i3c subsystem, open firmware and flattened device tree bindings, the rest · Maintainers:
Alexandre Belloni, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
Add device tree binding documentation for the AMD I3C master controller. The controller is represented by the compatible string "xlnx,axi-i3c-1.0". The binding specifies required properties including register space, clock, resets, interrupts, and provides an example usage. Signed-off-by: Manikanta Guntupalli <redacted> --- Changes for V2: Updated commit subject and description. Moved allOf to after required. Removed xlnx,num-targets property. --- .../devicetree/bindings/i3c/xlnx,axi-i3c.yaml | 53 +++++++++++++++++++ 1 file changed, 53 insertions(+) create mode 100644 Documentation/devicetree/bindings/i3c/xlnx,axi-i3c.yaml
diff --git a/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c.yaml b/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c.yaml
new file mode 100644
index 000000000000..48be3c53c1be
--- /dev/null
+++ b/Documentation/devicetree/bindings/i3c/xlnx,axi-i3c.yaml@@ -0,0 +1,53 @@ +# 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. + +properties: + compatible: + const: xlnx,axi-i3c-1.0 + + resets: + maxItems: 1 + + interrupts: + maxItems: 1 + + reg: + maxItems: 1 + + clocks: + maxItems: 1 + +required: + - reg + - clocks + +allOf: + - $ref: i3c.yaml# + +unevaluatedProperties: false + +examples: + - | + i3c@80000000 { + compatible = "xlnx,axi-i3c-1.0"; + reg = <0x80000000 0x10000>; + clocks = <&zynqmp_clk 71>; + #address-cells = <3>; + #size-cells = <0>; + }; +...
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2.34.1