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authorThomas Petazzoni <thomas.petazzoni@free-electrons.com>2014-04-15 15:50:19 +0200
committerDavid S. Miller <davem@davemloft.net>2014-04-16 14:36:12 -0400
commitb9d12085f2f531fdea67f0361564e0812696227c (patch)
treea2181a720f57658e4db0789f24ec1140e2e7f228 /include
parente283546c0465dd3026bc94f7b1a9de7f6b8969ec (diff)
downloadlinux-b9d12085f2f531fdea67f0361564e0812696227c.tar.bz2
net: phy: add minimal support for QSGMII PHY
This commit adds the necessary definitions for the PHY layer to recognize "qsgmii" as a valid PHY interface. A QSMII interface, as defined at http://en.wikipedia.org/wiki/Media_Independent_Interface#Quad_Serial_Gigabit_Media_Independent_Interface, is "is a method of combining four SGMII lines into a 5Gbit/s interface. QSGMII, like SGMII, uses LVDS signalling for the TX and RX data and a single LVDS clock signal. QSGMII uses significantly fewer signal lines than four SGMII busses." This type of MAC <-> PHY connection might require special handling on the MAC driver side, so it should be possible to express this type of MAC <-> PHY connection, for example in the Device Tree. Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: devicetree@vger.kernel.org Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include')
-rw-r--r--include/linux/phy.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 24126c4b27b5..4d0221fd0688 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -75,6 +75,7 @@ typedef enum {
PHY_INTERFACE_MODE_SMII,
PHY_INTERFACE_MODE_XGMII,
PHY_INTERFACE_MODE_MOCA,
+ PHY_INTERFACE_MODE_QSGMII,
PHY_INTERFACE_MODE_MAX,
} phy_interface_t;
@@ -116,6 +117,8 @@ static inline const char *phy_modes(phy_interface_t interface)
return "xgmii";
case PHY_INTERFACE_MODE_MOCA:
return "moca";
+ case PHY_INTERFACE_MODE_QSGMII:
+ return "qsgmii";
default:
return "unknown";
}