netdev - Re: [v6] dsa: mv88e6xxx: make serdes SGMII/Fiber tx amplitude configurable

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Message-ID: <YgUW3hcGW9Zh9zNC@lunn.ch>
Date:   Thu, 10 Feb 2022 14:45:02 +0100
From:   Andrew Lunn <andrew@...n.ch>
To:     Holger Brunck <holger.brunck@...achienergy.com>
Cc:     netdev@...r.kernel.org, Jakub Kicinski <kuba@...nel.org>,
        Marek Behún <kabel@...nel.org>
Subject: Re: [v6] dsa: mv88e6xxx: make serdes SGMII/Fiber tx amplitude
 configurable

On Thu, Feb 10, 2022 at 09:43:22AM +0100, Holger Brunck wrote:
> The mv88e6352, mv88e6240 and mv88e6176  have a serdes interface. This patch
> allows to configure the output swing to a desired value in the
> phy-handle of the port. The value which is peak to peak has to be
> specified in microvolts. As the chips only supports eight dedicated
> values we return EINVAL if the value in the DTS does not match one of
> these values.
> 
> CC: Andrew Lunn <andrew@...n.ch>
> CC: Jakub Kicinski <kuba@...nel.org>
> CC: Marek Behún <kabel@...nel.org>
> Signed-off-by: Holger Brunck <holger.brunck@...achienergy.com>

Reviewed-by: Andrew Lunn <andrew@...n.ch>

    Andrew