netdev - Re: [PATCH v2 net-next 03/12] drivers: net: xgene: Use rgmii mdio mac access

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Date:   Wed, 10 May 2017 14:48:36 -0700
From:   Florian Fainelli <f.fainelli@...il.com>
To:     Iyappan Subramanian <isubramanian@....com>, davem@...emloft.net,
        netdev@...r.kernel.org
Cc:     Quan Nguyen <qnguyen@....com>, patches@....com,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v2 net-next 03/12] drivers: net: xgene: Use rgmii mdio mac
 access

On 05/10/2017 01:45 PM, Iyappan Subramanian wrote:
> From: Quan Nguyen <qnguyen@....com>
> 
> This patch switches to use rgmii mdio mac access routines if available,
> as they share the same HW.
> 
> Signed-off-by: Quan Nguyen <qnguyen@....com>
> Signed-off-by: Iyappan Subramanian <isubramanian@....com>
> ---
>  drivers/net/ethernet/apm/xgene/xgene_enet_hw.c | 14 ++++++++++++++
>  1 file changed, 14 insertions(+)
> 
> diff --git a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
> index 2050c58..47c5b75 100644
> --- a/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
> +++ b/drivers/net/ethernet/apm/xgene/xgene_enet_hw.c
> @@ -277,6 +277,13 @@ void xgene_enet_wr_mac(struct xgene_enet_pdata *pdata, u32 wr_addr, u32 wr_data)
>  	u8 wait = 10;
>  	u32 done;
>  
> +	if (pdata->mdio_driver && ndev->phydev &&
> +	    pdata->phy_mode == PHY_INTERFACE_MODE_RGMII) {

To be on the safe side you should check all 4 values of
PHY_INTERFACE_MODE_RGMII, not just this one.
-- 
Florian