linux-kernel - Re: PROBLEM: Broken or delayed ethernet on Xilinx ZCU104 since 5.18 (regression)

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Message-ID: <CADyTPEyQcHd5-A2TLf_-U5KdtA5WKZ_mNYKvx3DSMjkNi99E0g@mail.gmail.com>
Date:   Sat, 5 Aug 2023 03:34:22 -0400
From:   Nick Bowler <nbowler@...conx.ca>
To:     Andrew Lunn <andrew@...n.ch>
Cc:     Rob Herring <robh@...nel.org>,
        Saravana Kannan <saravanak@...gle.com>,
        linux-kernel@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        netdev@...r.kernel.org, regressions@...ts.linux.dev
Subject: Re: PROBLEM: Broken or delayed ethernet on Xilinx ZCU104 since 5.18 (regression)

On 2023-08-05, Andrew Lunn <andrew@...n.ch> wrote:
>> > It was also commented out before that change. It could be that gpio
>> > controller is missing. Do you have the driver for the tca6416 in
>> > your kernel configuration?
>>
>> I have CONFIG_GPIO_PCA953X=y which I think is the correct driver?
>
> It does appear to be the correct driver. But check if it has
> loaded. It is an i2c device, so maybe you are missing the I2C bus
> master device?

That's it!  I needed to set

  CONFIG_I2C_CADENCE=y

and now things are working again!

Thanks,
  Nick