linux-kernel - Re: [PATCH 2/5] dt-bindings: mips: mips-cm: Add property for broken HCI information

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Message-ID: <20241119162821.GA1767692-robh@kernel.org>
Date: Tue, 19 Nov 2024 10:28:21 -0600
From: Rob Herring <robh@...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>,
	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 2/5] dt-bindings: mips: mips-cm: Add property for broken
 HCI information

On Fri, Nov 15, 2024 at 04:29:55PM +0100, Gregory CLEMENT wrote:
> Some CM3.5 reports show that Hardware Cache Initialization is
> complete, but in reality it's not the case. They also incorrectly
> indicate that Hardware Cache Initialization is supported. This
> optional property allows warning about this broken feature that cannot
> be detected at runtime.
> 
> Signed-off-by: Gregory CLEMENT <gregory.clement@...tlin.com>
> ---
>  Documentation/devicetree/bindings/mips/mti,mips-cm.yaml | 6 ++++++
>  1 file changed, 6 insertions(+)
> 
> diff --git a/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml b/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml
> index 03a5ba5624a429c428ee2afca73b3e29127e02f9..eab31a1022c8cbdee86081110516579ebe99e640 100644
> --- a/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml
> +++ b/Documentation/devicetree/bindings/mips/mti,mips-cm.yaml
> @@ -23,6 +23,12 @@ properties:
>        block. It is conventionally decided by the system integrator.
>      maxItems: 1
>  
> +  cm3-l2-config-hci-broken:
> +    type: boolean
> +    description:
> +      If present, indicates that the HCI (Hardware Cache Initialization)
> +      information for the L2 cache in multi-cluster configuration is broken.
> +

This should be implied by a specific compatible.

>  required:
>    - compatible
>  
> 
> -- 
> 2.45.2
>