linux-kernel - Re: [PATCH v4 net-next 03/13] dt-bindings: net: add bindings for NETC blocks control

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Message-ID: <f7064783-983a-44bd-a9db-fd20f4e50e33@kernel.org>
Date: Wed, 23 Oct 2024 10:55:58 +0200
From: Krzysztof Kozlowski <krzk@...nel.org>
To: Wei Fang <wei.fang@....com>
Cc: "davem@...emloft.net" <davem@...emloft.net>,
 "edumazet@...gle.com" <edumazet@...gle.com>,
 "kuba@...nel.org" <kuba@...nel.org>, "pabeni@...hat.com"
 <pabeni@...hat.com>, "robh@...nel.org" <robh@...nel.org>,
 "krzk+dt@...nel.org" <krzk+dt@...nel.org>,
 "conor+dt@...nel.org" <conor+dt@...nel.org>,
 Vladimir Oltean <vladimir.oltean@....com>,
 Claudiu Manoil <claudiu.manoil@....com>, Clark Wang <xiaoning.wang@....com>,
 Frank Li <frank.li@....com>,
 "christophe.leroy@...roup.eu" <christophe.leroy@...roup.eu>,
 "linux@...linux.org.uk" <linux@...linux.org.uk>,
 "bhelgaas@...gle.com" <bhelgaas@...gle.com>,
 "horms@...nel.org" <horms@...nel.org>,
 "imx@...ts.linux.dev" <imx@...ts.linux.dev>,
 "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
 "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
 "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
 "linux-pci@...r.kernel.org" <linux-pci@...r.kernel.org>,
 "alexander.stein@...tq-group.com" <alexander.stein@...tq-group.com>
Subject: Re: [PATCH v4 net-next 03/13] dt-bindings: net: add bindings for NETC
 blocks control

On 23/10/2024 10:18, Wei Fang wrote:
>>> +maintainers:
>>> +  - Wei Fang <wei.fang@....com>
>>> +  - Clark Wang <xiaoning.wang@....com>
>>> +
>>> +properties:
>>> +  compatible:
>>> +    enum:
>>> +      - nxp,imx95-netc-blk-ctrl
>>> +
>>> +  reg:
>>> +    minItems: 2
>>> +    maxItems: 3
>>
>> You have one device, why this is flexible? Device either has exactly 2
>> or exactly 3 IO spaces, not both depending on the context.
>>
> 
> There are three register blocks, IERB and PRB are inside NETC IP, but NETCMIX
> is outside NETC. There are dependencies between these three blocks, so it is
> better to configure them in one driver. But for other platforms like S32, it does
> not have NETCMIX, so NETCMIX is optional.

But how s32 is related here? That's a different device.

Best regards,
Krzysztof