linux-kernel - Re: [PATCH 1/5] dt-bindings: mips: Document mti,mips-cm

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Message-ID: <20241115-strained-rule-631f3a514bf9@spud>
Date: Fri, 15 Nov 2024 18:13:11 +0000
From: Conor Dooley <conor@...nel.org>
To: Gregory CLEMENT <gregory.clement@...tlin.com>
Cc: Aleksandar Rikalo <arikalo@...il.com>,
	Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
	Jiaxun Yang <jiaxun.yang@...goat.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Vladimir Kondratiev <vladimir.kondratiev@...ileye.com>,
	Théo Lebrun <theo.lebrun@...tlin.com>,
	Tawfik Bayouk <tawfik.bayouk@...ileye.com>,
	Thomas Petazzoni <thomas.petazzoni@...tlin.com>,
	linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/5] dt-bindings: mips: Document mti,mips-cm

On Fri, Nov 15, 2024 at 04:29:54PM +0100, Gregory CLEMENT wrote:
> From: Jiaxun Yang <jiaxun.yang@...goat.com>
> 
> Add devicetree binding documentation for MIPS Coherence Manager.
> 
> gc: reg is no more mandatory

That's not enough, you need to explain somewhere why it's not required
anymore. Without a reg property, what does this even convey that cannot
be derived from a compatible etc?

> Signed-off-by: Jiaxun Yang <jiaxun.yang@...goat.com>
> Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
> ---
>  .../devicetree/bindings/mips/mti,mips-cm.yaml      | 37 ++++++++++++++++++++++
>  1 file changed, 37 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml b/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml
> new file mode 100644
> index 0000000000000000000000000000000000000000..03a5ba5624a429c428ee2afca73b3e29127e02f9
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml
> @@ -0,0 +1,37 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/mips/mti,mips-cm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: MIPS Coherence Manager
> +
> +description: |
> +  Defines a location of the MIPS Coherence Manager registers.
> +
> +maintainers:
> +  - Jiaxun Yang <jiaxun.yang@...goat.com>
> +
> +properties:
> +  compatible:
> +    const: mti,mips-cm
> +
> +  reg:
> +    description:
> +      Base address and size of an unoccupied region in system's MMIO address
> +      space, which will be used to map the MIPS CM global control registers
> +      block. It is conventionally decided by the system integrator.
> +    maxItems: 1
> +
> +required:
> +  - compatible
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    coherency-manager@...f8000 {
> +      compatible = "mti,mips-cm";
> +      reg = <0x1bde8000 0x8000>;
> +    };
> +...
> 
> -- 
> 2.45.2
> 

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