linux-kernel - Re: [PATCH] dt-bindings: ti-serdes-mux: Add defines for SERDES4 in J784S4 SoC

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Message-ID: <d54b0cc2-91d9-b081-fc39-0bbba715ee5b@ti.com>
Date:   Tue, 11 Jul 2023 12:51:47 +0530
From:   Jayesh Choudhary <j-choudhary@...com>
To:     Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
        <peda@...ntia.se>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>
CC:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <s-vadapalli@...com>
Subject: Re: [PATCH] dt-bindings: ti-serdes-mux: Add defines for SERDES4 in
 J784S4 SoC



On 11/07/23 11:34, Krzysztof Kozlowski wrote:
> On 11/07/2023 07:55, Jayesh Choudhary wrote:
>> Hello Krzysztof,
>>
>> On 10/07/23 17:11, Krzysztof Kozlowski wrote:
>>> On 10/07/2023 12:27, Jayesh Choudhary wrote:
>>>> SERDES4 has 4 lanes. Add lane definitions for it.
>>>>
>>>> Signed-off-by: Jayesh Choudhary <j-choudhary@...com>
>>>> ---
>>>>    include/dt-bindings/mux/ti-serdes.h | 20 ++++++++++++++++++++
>>>
>>> Where are the users of this binding constants? IOW, why do you need to
>>> add these?
>>>
>>> I don't see users of existing constants either...
>>>
>>
>> These constants are propagated in the idle-state property for the
>> mux-controller node (named serdes_ln_ctrl) usually in the final
>> board dts files and occasionally in the main dtsi files for TI SoCs.
> 
> So they are not used. 

'They' as in SERDES4 definition or others as well??

Do not add headers which are not used - neither to
> the kernel sources, nor to the DTSI. The header constants don't even
> look as suitable for bindings, although this is tricky to judge without
> users.
> 
> Best regards,
> Krzysztof
>