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Date: Wed, 9 Aug 2017 12:41:44 -0700 From: Greg Kroah-Hartman <gregkh@...uxfoundation.org> To: linux-kernel@...r.kernel.org Cc: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, stable@...r.kernel.org, Marc Gonzalez <marc_gonzalez@...madesigns.com>, "David S. Miller" <davem@...emloft.net> Subject: [PATCH 4.4 32/58] net: ethernet: nb8800: Handle all 4 RGMII modes identically 4.4-stable review patch. If anyone has any objections, please let me know. ------------------ From: Marc Gonzalez <marc_gonzalez@...madesigns.com> [ 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: 52dfc8301248 ("net: ethernet: add driver for Aurora VLSI NB8800 Ethernet controller") Signed-off-by: Marc Gonzalez <marc_gonzalez@...madesigns.com> Signed-off-by: David S. Miller <davem@...emloft.net> Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org> --- drivers/net/ethernet/aurora/nb8800.c | 9 ++++----- 1 file changed, 4 insertions(+), 5 deletions(-) --- a/drivers/net/ethernet/aurora/nb8800.c +++ b/drivers/net/ethernet/aurora/nb8800.c @@ -608,7 +608,7 @@ static void nb8800_mac_config(struct net 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; @@ -1295,11 +1295,10 @@ static int nb8800_tangox_init(struct net 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:
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