Re: [PATCH net-next v4 04/10] net: sparx5: add port module support

[Russell King (Oracle)]

Hi,

On Tue, Jun 15, 2021 at 10:50:28AM +0200, Steen Hegelund wrote:
> +static int sparx5_port_pcs_low_set(struct sparx5 *sparx5,
> +				   struct sparx5_port *port,
> +				   struct sparx5_port_config *conf)
> +{
> +	bool sgmii = false, inband_aneg = false;
> +	int err;
> +
> +	if (!port->conf.has_sfp) {
> +		sgmii = true; /* Phy is connnected to the MAC */
> +	} else {
> +		if (conf->portmode == PHY_INTERFACE_MODE_SGMII ||
> +		    conf->portmode == PHY_INTERFACE_MODE_QSGMII)
> +			inband_aneg = true; /* Cisco-SGMII in-band-aneg */
> +		else if (conf->portmode == PHY_INTERFACE_MODE_1000BASEX &&
> +			 conf->autoneg)
> +			inband_aneg = true; /* Clause-37 in-band-aneg */

I have to wonder why the presence of inband aneg depends on whether
there's a SFP or not... We don't do that kind of thing in other
drivers, so what is different here?

Thanks.

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