linux-kernel - Re: [PATCH v3 1/2] dt-bindings: i3c: Add adi-i3c-master

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Message-ID: <20250618-visionary-hawk-of-success-d4aab8@kuoka>
Date: Wed, 18 Jun 2025 11:21:22 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Jorge Marques <jorge.marques@...log.com>
Cc: 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>, 
	linux-i3c@...ts.infradead.org, devicetree@...r.kernel.org, linux-kernel@...r.kernel.org, 
	gastmaier@...il.com
Subject: Re: [PATCH v3 1/2] dt-bindings: i3c: Add adi-i3c-master

On Wed, Jun 18, 2025 at 09:16:43AM GMT, Jorge Marques wrote:
> Add bindings doc for ADI I3C Controller IP core, a FPGA synthesizable IP
> core that implements the MIPI I3C Basic controller specification.

Here you put outcome of previous questions - why such compatible was
chosen, that hardware is this and that.

> 
> 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..718733bbb450c34c5d4924050cc6f85d8a80fe4b
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/i3c/adi,i3c-master.yaml

Filename based on the compatible, so adi,i3c-master-1.00.a.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: |
> +  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

Why?

> +    items:
> +      - description: The AXI interconnect clock.
> +      - description: The I3C controller clock.
> +
> +  clock-names:

Not synced with clocks.

> +    items:
> +      - const: axi
> +      - const: i3c
> +
> +  interrupts:
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +  - interrupts
> +
> +allOf:
> +  - $ref: i3c.yaml#
> +
> +unevaluatedProperties: false
> +
> +examples:
> +  - |
> +    i3c@...00000 {
> +        compatible = "adi,i3c-master";
> +        reg = <0x44a00000 0x1000>;
> +        interrupts = <0 56 4>;

Use proper defines.

Best regards,
Krzysztof