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Date:   Fri, 28 Oct 2022 20:43:54 +0200
From:   Andrew Lunn <>
To:     Fabio Estevam <>
        Steffen Bätz <>,
        Fabio Estevam <>
Subject: Re: [PATCH v3 net-next] net: dsa: mv88e6xxx: Add RGMII delay to

On Fri, Oct 28, 2022 at 01:31:58PM -0300, Fabio Estevam wrote:
> From: Steffen Bätz <>
> Currently, the .port_set_rgmii_delay hook is missing for the 88E6320
> family, which causes failure to retrieve an IP address via DHCP.
> Add mv88e6320_port_set_rgmii_delay() that allows applying the RGMII
> delay for ports 2, 5, and 6, which are the only ports that can be used
> in RGMII mode.
> Tested on a custom i.MX8MN board connected to an 88E6320 switch.
> This change also applies safely to the 88E6321 variant.
> The only difference between 88E6320 versus 88E6321 is the temperature
> grade and pinout.
> They share exactly the same MDIO register map for ports 2, 5, and 6,
> which are the only ports that can be used in RGMII mode.
> Signed-off-by: Steffen Bätz <>
> [fabio: Improved commit log and extended it to mv88e6321_ops]
> Signed-off-by: Fabio Estevam <>

Reviewed-by: Andrew Lunn <>


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