netdev - Re: [PATCH net-next 2/3] net: pcs: pcs-mtk-lynxi: implement pcs_inband

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Message-ID: <e1e271e3-b684-46d2-879d-e3481d25a712@gmail.com>
Date: Tue, 17 Dec 2024 08:49:58 +0100
From: Eric Woudstra <ericwouds@...il.com>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>,
 Daniel Golle <daniel@...rotopia.org>
Cc: Andrew Lunn <andrew@...n.ch>, Heiner Kallweit <hkallweit1@...il.com>,
 Alexander Couzens <lynxis@...0.eu>, "David S. Miller" <davem@...emloft.net>,
 Eric Dumazet <edumazet@...gle.com>, Jakub Kicinski <kuba@...nel.org>,
 Paolo Abeni <pabeni@...hat.com>, Matthias Brugger <matthias.bgg@...il.com>,
 AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
 netdev@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-mediatek@...ts.infradead.org
Subject: Re: [PATCH net-next 2/3] net: pcs: pcs-mtk-lynxi: implement
 pcs_inband_caps() method

On 12/5/24 10:42 AM, Russell King (Oracle) wrote:
> Report the PCS in-band capabilities to phylink for the LynxI PCS.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>
> Reviewed-by: Daniel Golle <daniel@...rotopia.org>
> ---
>  drivers/net/pcs/pcs-mtk-lynxi.c | 16 ++++++++++++++++
>  1 file changed, 16 insertions(+)
> 
> diff --git a/drivers/net/pcs/pcs-mtk-lynxi.c b/drivers/net/pcs/pcs-mtk-lynxi.c
> index 4f63abe638c4..7de804535229 100644
> --- a/drivers/net/pcs/pcs-mtk-lynxi.c
> +++ b/drivers/net/pcs/pcs-mtk-lynxi.c
> @@ -88,6 +88,21 @@ static struct mtk_pcs_lynxi *pcs_to_mtk_pcs_lynxi(struct phylink_pcs *pcs)
>  	return container_of(pcs, struct mtk_pcs_lynxi, pcs);
>  }
>  
> +static unsigned int mtk_pcs_lynxi_inband_caps(struct phylink_pcs *pcs,
> +					      phy_interface_t interface)
> +{
> +	switch (interface) {
> +	case PHY_INTERFACE_MODE_1000BASEX:
> +	case PHY_INTERFACE_MODE_2500BASEX:

Isn't this the place now where to report to phylink, that this PCS does
not support in-band at 2500base-x?

Best regards,

Eric

> +	case PHY_INTERFACE_MODE_SGMII:
> +	case PHY_INTERFACE_MODE_QSGMII:
> +		return LINK_INBAND_DISABLE | LINK_INBAND_ENABLE;
> +
> +	default:
> +		return 0;
> +	}
> +}
> +
>  static void mtk_pcs_lynxi_get_state(struct phylink_pcs *pcs,
>  				    struct phylink_link_state *state)
>  {
> @@ -241,6 +256,7 @@ static void mtk_pcs_lynxi_disable(struct phylink_pcs *pcs)
>  }
>  
>  static const struct phylink_pcs_ops mtk_pcs_lynxi_ops = {
> +	.pcs_inband_caps = mtk_pcs_lynxi_inband_caps,
>  	.pcs_get_state = mtk_pcs_lynxi_get_state,
>  	.pcs_config = mtk_pcs_lynxi_config,
>  	.pcs_an_restart = mtk_pcs_lynxi_restart_an,