linux-kernel - Re: [PATCH 0/2] J722S: DT Node cleanup for serdes0 and serdes1

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Message-ID: <20250414120930.m7x7zfmyby22urpo@ultimate>
Date: Mon, 14 Apr 2025 07:09:30 -0500
From: Nishanth Menon <nm@...com>
To: Siddharth Vadapalli <s-vadapalli@...com>
CC: <vigneshr@...com>, <kristo@...nel.org>, <robh@...nel.org>,
        <krzk+dt@...nel.org>, <conor+dt@...nel.org>, <u-kumar1@...com>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <srk@...com>
Subject: Re: [PATCH 0/2] J722S: DT Node cleanup for serdes0 and serdes1

On 10:57-20250412, Siddharth Vadapalli wrote:
> Hello,
> 
> This series is based on the following series:
> https://patchwork.kernel.org/project/linux-arm-kernel/cover/20250408103606.3679505-1-s-vadapalli@ti.com/
> Based on the discussion in the above series which disabled 'serdes_wiz0'
> and 'serdes_wiz1' nodes in the SoC file and enabled them in the board
> file, Udit pointed out that it wasn't necessary to disable 'serdes0' and
> 'serdes1' in the SoC file anymore, since that is not a working
> configuration - serdes_wizX enabled and serdesX disabled doesn't work.
> 
> Hence, this series aims to cleanup the serdesX nodes after the changes
> made by the above series.
> 
> Regards,
> Siddharth.
> 
> Siddharth Vadapalli (2):
>   arm64: dts: ti: k3-j722s-main: don't disable serdes0 and serdes1
>   arm64: dts: ti: k3-j722s-evm: drop redundant status within
>     serdes0/serdes1
> 
>  arch/arm64/boot/dts/ti/k3-j722s-evm.dts   | 2 --
>  arch/arm64/boot/dts/ti/k3-j722s-main.dtsi | 4 ----
>  2 files changed, 6 deletions(-)
> 
> -- 
> 2.34.1
> 


I do not understand the logic here. serdes cannot operate without wiz
nodes, correct? why would we leave serdes on by default?


-- 
Regards,
Nishanth Menon
Key (0xDDB5849D1736249D) / Fingerprint: F8A2 8693 54EB 8232 17A3  1A34 DDB5 849D 1736 249D