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

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Message-ID: <aECSL3cn3m9pKJv6@lizhi-Precision-Tower-5810>
Date: Wed, 4 Jun 2025 14:36:31 -0400
From: Frank Li <Frank.li@....com>
To: Jorge Marques <jorge.marques@...log.com>
Cc: Alexandre Belloni <alexandre.belloni@...tlin.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, linux-i3c@...ts.infradead.org,
	devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: i3c: Add adi-i3c-master

On Wed, Jun 04, 2025 at 05:48:57PM +0200, Jorge Marques wrote:
> Add nodes for ADI I3C Controller IP core.

Add binding doc for ...

>
> Signed-off-by: Jorge Marques <jorge.marques@...log.com>
> ---
>  .../devicetree/bindings/i3c/adi,i3c-master.yaml    | 63 ++++++++++++++++++++++
>  MAINTAINERS                                        |  5 ++
>  2 files changed, 68 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/i3c/adi,i3c-master.yaml b/Documentation/devicetree/bindings/i3c/adi,i3c-master.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..859dbfde15f123db59d7aa46c120c4a3ac05198e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i3c/adi,i3c-master.yaml
> @@ -0,0 +1,63 @@
> +# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/i3c/adi,i3c-master.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Analog Devices I3C Controller
> +
> +description: |
> +  The ADI I3C controller implements a subset of the I3C-basic specification to
> +  interface I3C and I2C peripherals [1].
> +
> +  [1] https://analogdevicesinc.github.io/hdl/library/i3c_controller
> +
> +maintainers:
> +  - Jorge Marques <jorge.marques@...log.com>
> +
> +allOf:
> +  - $ref: i3c.yaml#
> +

New binding, generally, allOf between required and unevaluatedProperties

> +properties:
> +  compatible:
> +    const: adi,i3c-master
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    minItems: 1
> +    items:
> +      - description: The AXI interconnect clock.
> +      - description: The I3C controller clock.
> +
> +  clock-names:
> +    items:
> +      - const: s_axi_aclk
> +      - const: i3c_clk

Needn't _clk surfix,

- const: axi
- const: i3c

Frank
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - interrupts
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    i3c@...00000 {
> +        compatible = "adi,i3c-master";
> +        reg = <0x44a00000 0x1000>;
> +        interrupts = <0 56 4>;
> +        clocks = <&clkc 15>, <&clkc 15>;
> +        clock-names = "s_axi_aclk", "i3c_clk";
> +        #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
>