linux-kernel - [PATCH v4 1/2] dt-bindings: i3c: Add adi-i3c-master

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Message-ID: <20250626-adi-i3c-master-v4-1-3846a1f66d5e@analog.com>
Date: Thu, 26 Jun 2025 12:07:36 +0200
From: Jorge Marques <jorge.marques@...log.com>
To: Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Frank Li
	<Frank.Li@....com>, Rob Herring <robh@...nel.org>,
        Krzysztof Kozlowski
	<krzk+dt@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>
CC: <linux-i3c@...ts.infradead.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>, <gastmaier@...il.com>,
        Jorge Marques
	<jorge.marques@...log.com>
Subject: [PATCH v4 1/2] dt-bindings: i3c: Add adi-i3c-master

Add bindings doc for ADI I3C Controller IP core, a FPGA synthesizable IP
core that implements the MIPI I3C Basic controller specification.

Signed-off-by: Jorge Marques <jorge.marques@...log.com>
---
 .../bindings/i3c/adi,i3c-master-1.00.a.yaml        | 66 ++++++++++++++++++++++
 MAINTAINERS                                        |  5 ++
 2 files changed, 71 insertions(+)

diff --git a/Documentation/devicetree/bindings/i3c/adi,i3c-master-1.00.a.yaml b/Documentation/devicetree/bindings/i3c/adi,i3c-master-1.00.a.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..9bad24187800cb47090f440b70c519b3f710adf2
--- /dev/null
+++ b/Documentation/devicetree/bindings/i3c/adi,i3c-master-1.00.a.yaml
@@ -0,0 +1,66 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/i3c/adi,i3c-master-1.00.a.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices I3C Controller
+
+description: |
+  FPGA-based I3C controller designed to interface with I3C and I2C peripherals,
+  implementing a subset of the I3C-basic specification.
+
+  https://analogdevicesinc.github.io/hdl/library/i3c_controller
+
+maintainers:
+  - Jorge Marques <jorge.marques@...log.com>
+
+properties:
+  compatible:
+    const: adi,i3c-master-1.00.a
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    minItems: 1
+    items:
+      - description: The AXI interconnect clock, drives the register map.
+      - description: The I3C controller clock. AXI clock drives all logic if not provided.
+
+  clock-names:
+    minItems: 1
+    items:
+      - const: axi
+      - const: i3c
+
+  interrupts:
+    maxItems: 1
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - clock-names
+  - interrupts
+
+allOf:
+  - $ref: i3c.yaml#
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/interrupt-controller/irq.h>
+
+    i3c@...00000 {
+        compatible = "adi,i3c-master-1.00.a";
+        reg = <0x44a00000 0x1000>;
+        interrupts = <3 IRQ_TYPE_LEVEL_HIGH>;
+        clocks = <&clkc 15>, <&clkc 15>;
+        clock-names = "axi", "i3c";
+        #address-cells = <3>;
+        #size-cells = <0>;
+
+        /* I3C and I2C devices */
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 96b82704950184bd71623ff41fc4df31e4c7fe87..6f56e17dcecf902c6812827c1ec3e067c65e9894 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -11243,6 +11243,11 @@ S:	Maintained
 F:	Documentation/devicetree/bindings/i3c/aspeed,ast2600-i3c.yaml
 F:	drivers/i3c/master/ast2600-i3c-master.c
 
+I3C DRIVER FOR ANALOG DEVICES I3C CONTROLLER IP
+M:	Jorge Marques <jorge.marques@...log.com>
+S:	Maintained
+F:	Documentation/devicetree/bindings/i3c/adi,i3c-master.yaml
+
 I3C DRIVER FOR CADENCE I3C MASTER IP
 M:	Przemysław Gaj <pgaj@...ence.com>
 S:	Maintained

-- 
2.49.0