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Date:	Mon, 08 Feb 2016 13:19:40 +0000
From:	Måns Rullgård <mans@...sr.com>
To:	Sebastian Frias <sf84@...oste.net>
Cc:	"David S. Miller" <davem@...emloft.net>, netdev@...r.kernel.org,
	LKML <linux-kernel@...r.kernel.org>, mason <slash.tmp@...e.fr>
Subject: Re: [PATCH v5] net: ethernet: nb8800: support fixed-link DT node

Sebastian Frias <sf84@...oste.net> writes:

> Under some circumstances, for example when connecting
> to a switch:
>
> https://stackoverflow.com/questions/31046172/device-tree-for-phy-less-connection-to-a-dsa-switch
>
> the ethernet port will not be connected to a PHY.
> In that case a "fixed-link" DT node can be used to replace it.
>
> This patch adds support for the "fixed-link" node to the
> nb8800 driver.
>
> Signed-off-by: Sebastian Frias <sf84@...oste.net>

Acked-by: Mans Rullgard <mans@...sr.com>

> ---
>  drivers/net/ethernet/aurora/nb8800.c | 14 +++++++++++++-
>  1 file changed, 13 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/net/ethernet/aurora/nb8800.c
> b/drivers/net/ethernet/aurora/nb8800.c
> index ecc4a33..e1fb071 100644
> --- a/drivers/net/ethernet/aurora/nb8800.c
> +++ b/drivers/net/ethernet/aurora/nb8800.c
> @@ -1460,7 +1460,19 @@ static int nb8800_probe(struct platform_device *pdev)
>  		goto err_disable_clk;
>  	}
>
> -	priv->phy_node = of_parse_phandle(pdev->dev.of_node, "phy-handle", 0);
> +	if (of_phy_is_fixed_link(pdev->dev.of_node)) {
> +		ret = of_phy_register_fixed_link(pdev->dev.of_node);
> +		if (ret < 0) {
> +			dev_err(&pdev->dev, "bad fixed-link spec\n");
> +			goto err_free_bus;
> +		}
> +		priv->phy_node = of_node_get(pdev->dev.of_node);
> +	}
> +
> +	if (!priv->phy_node)
> +		priv->phy_node = of_parse_phandle(pdev->dev.of_node,
> +						  "phy-handle", 0);
> +
>  	if (!priv->phy_node) {
>  		dev_err(&pdev->dev, "no PHY specified\n");
>  		ret = -ENODEV;
> -- 
> 2.1.4
>

-- 
Måns Rullgård

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