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Commit c0c8688f authored by Marc Gonzalez's avatar Marc Gonzalez Committed by Greg Kroah-Hartman
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net: ethernet: nb8800: Handle all 4 RGMII modes identically 




[ Upstream commit 4813497b537c6208c90d6cbecac5072d347de900 ]

Before commit bf8f6952a233 ("Add blurb about RGMII") it was unclear
whose responsibility it was to insert the required clock skew, and
in hindsight, some PHY drivers got it wrong. The solution forward
is to introduce a new property, explicitly requiring skew from the
node to which it is attached. In the interim, this driver will handle
all 4 RGMII modes identically (no skew).

Fixes: 52dfc830 ("net: ethernet: add driver for Aurora VLSI NB8800 Ethernet controller")
Signed-off-by: default avatarMarc Gonzalez <marc_gonzalez@sigmadesigns.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent 23a91c8a

drivers/net/ethernet/aurora/nb8800.c

+4 −5
Original line number Diff line number Diff line
@@ -609,7 +609,7 @@ static void nb8800_mac_config(struct net_device *dev) 
		mac_mode |= HALF_DUPLEX;



	if (gigabit) {

		if (priv->phy_mode == PHY_INTERFACE_MODE_RGMII)

		if (phy_interface_is_rgmii(dev->phydev))

			mac_mode |= RGMII_MODE;



		mac_mode |= GMAC_MODE;
@@ -1277,11 +1277,10 @@ static int nb8800_tangox_init(struct net_device *dev) 
		break;



	case PHY_INTERFACE_MODE_RGMII:

		pad_mode = PAD_MODE_RGMII;

		break;



	case PHY_INTERFACE_MODE_RGMII_ID:

	case PHY_INTERFACE_MODE_RGMII_RXID:

	case PHY_INTERFACE_MODE_RGMII_TXID:

		pad_mode = PAD_MODE_RGMII | PAD_MODE_GTX_CLK_DELAY;

		pad_mode = PAD_MODE_RGMII;

		break;



	default: