netdev - Re: [PATCH net-next 12/14] net: stmmac: only call stmmac_pcs_ctrl

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Message-ID: <79822da1-d797-43f5-b0d3-533d5e914b07@lunn.ch>
Date: Wed, 15 Oct 2025 23:01:37 +0200
From: Andrew Lunn <andrew@...n.ch>
To: "Russell King (Oracle)" <rmk+kernel@...linux.org.uk>
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Subject: Re: [PATCH net-next 12/14] net: stmmac: only call
 stmmac_pcs_ctrl_ane() for integrated SGMII PCS

On Wed, Oct 15, 2025 at 03:20:59PM +0100, Russell King (Oracle) wrote:
> The internal PCS registers only exist if the core is synthesized with
> SGMII, TBI or RTBI support. They have no relevance for RGMII.
> 
> However, priv->hw->pcs contains a STMMAC_PCS_RGMII flag, which is set
> if a PCS has been synthesized but we are operating in RGMII mode. As
> the register has no effect for RGMII, there is no point calling
> stmmac_pcs_ctrl_ane() in this case. Add a comment describing this
> and make it conditional on STMMAC_PCS_SGMII.
> 
> Signed-off-by: Russell King (Oracle) <rmk+kernel@...linux.org.uk>

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

    Andrew