linux-kernel - Re: [PATCH 1/4] dt-bindings: net: Add ICSS IEP

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Message-ID: <d3d53a4f-a1f8-09d4-77e8-a881829fac68@ti.com>
Date:   Fri, 4 Aug 2023 11:56:19 +0530
From:   Md Danish Anwar <a0501179@...com>
To:     Conor Dooley <conor@...nel.org>,
        MD Danish Anwar <danishanwar@...com>
CC:     Randy Dunlap <rdunlap@...radead.org>,
        Roger Quadros <rogerq@...nel.org>,
        Simon Horman <simon.horman@...igine.com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Andrew Lunn <andrew@...n.ch>,
        Richard Cochran <richardcochran@...il.com>,
        Conor Dooley <conor+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Rob Herring <robh+dt@...nel.org>,
        Paolo Abeni <pabeni@...hat.com>,
        Jakub Kicinski <kuba@...nel.org>,
        Eric Dumazet <edumazet@...gle.com>,
        "David S. Miller" <davem@...emloft.net>, <nm@...com>, <srk@...com>,
        <linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <netdev@...r.kernel.org>, <linux-omap@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH 1/4] dt-bindings: net: Add ICSS IEP

Hi Conor,

On 03/08/23 8:57 pm, Conor Dooley wrote:
> On Thu, Aug 03, 2023 at 04:31:50PM +0530, MD Danish Anwar wrote:
>> From: Md Danish Anwar <danishanwar@...com>
>>
>> Add DT binding documentation for ICSS IEP module.
>>
>> Signed-off-by: Md Danish Anwar <danishanwar@...com>
>> ---
>>  .../devicetree/bindings/net/ti,icss-iep.yaml  | 37 +++++++++++++++++++
>>  1 file changed, 37 insertions(+)
>>  create mode 100644 Documentation/devicetree/bindings/net/ti,icss-iep.yaml
>>
>> diff --git a/Documentation/devicetree/bindings/net/ti,icss-iep.yaml b/Documentation/devicetree/bindings/net/ti,icss-iep.yaml
>> new file mode 100644
>> index 000000000000..79cd72b330a6
>> --- /dev/null
>> +++ b/Documentation/devicetree/bindings/net/ti,icss-iep.yaml
>> @@ -0,0 +1,37 @@
>> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
>> +%YAML 1.2
>> +---
>> +$id: http://devicetree.org/schemas/net/ti,icss-iep.yaml#
>> +$schema: http://devicetree.org/meta-schemas/core.yaml#
>> +
>> +title: Texas Instruments ICSS Industrial Ethernet Peripheral (IEP) module
>> +
>> +maintainers:
>> +  - Md Danish Anwar <danishanwar@...com>
>> +
>> +properties:
>> +  compatible:
>> +    enum:
>> +      - ti,am654-icss-iep   # for K3 AM65x, J721E and AM64x SoCs
> 
> No. ti,am654-icss-iep is for am654. You should really have compatibles
> specific to the SoC - is there a reason why this has not been done?
> 

Yes, ti,am654-icss-iep is for am654. You are right, the compatibles should be
specific to SoC. Currently the upstream support is being added for only AM65x.

I will remove J721E and AM64x SoCs from the comment above and these compatibles
when their support is enabled in future.

Below is the updated compatible property.

properties:
  compatible:
    enum:
      - ti,am654-icss-iep   # for K3 AM65x SoCs

> 
>> +
>> +  reg:
>> +    maxItems: 1
>> +
>> +  clocks:
>> +    maxItems: 1
>> +    description: phandle to the IEP source clock
>> +
>> +required:
>> +  - compatible
>> +  - reg
>> +  - clocks
>> +
>> +additionalProperties: false
>> +
>> +examples:
>> +  - |
>> +    icssg0_iep0: iep@...00 {
>> +        compatible = "ti,am654-icss-iep";
>> +        reg = <0x2e000 0x1000>;
>> +        clocks = <&icssg0_iepclk_mux>;
>> +    };
>> -- 
>> 2.34.1
>>

-- 
Thanks and Regards,
Danish.