netdev - Re: [PATCH net-next v3] net: dsa: mv88e6xxx: implement USXGMII mode for mv88e6393x

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Message-ID: <ZHd4DJa7ha2Szne5@corigine.com>
Date: Wed, 31 May 2023 18:38:36 +0200
From: Simon Horman <simon.horman@...igine.com>
To: Michal Smulski <msmulski2@...il.com>
Cc: andrew@...n.ch, f.fainelli@...il.com, olteanv@...il.com,
	netdev@...r.kernel.org, Michal Smulski <michal.smulski@...a.com>
Subject: Re: [PATCH net-next v3] net: dsa: mv88e6xxx: implement USXGMII mode
 for mv88e6393x

On Tue, May 30, 2023 at 10:50:10PM -0700, Michal Smulski wrote:
> Enable USXGMII mode for mv88e6393x chips. Tested on Marvell 88E6191X.
> 
> Signed-off-by: Michal Smulski <michal.smulski@...a.com>

> @@ -984,6 +985,64 @@ static int mv88e6393x_serdes_pcs_get_state_10g(struct mv88e6xxx_chip *chip,
>  			state->speed = SPEED_10000;
>  		state->duplex = DUPLEX_FULL;
>  	}
> +	return 0;
> +}
> +
> +/* USXGMII registers for Marvell switch 88e639x are undocumented and this function is based
> + * on some educated guesses. There does not seem to bit status bit related to
> + * autonegotion complete or flow control.

Hi Michal,

: checkpatch --codespell suggests s/autonegotion/autonegotiation/