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-rw-r--r--Documentation/networking/phy.rst5
-rw-r--r--drivers/net/phy/sfp-bus.c9
-rw-r--r--include/linux/phy.h4
3 files changed, 18 insertions, 0 deletions
diff --git a/Documentation/networking/phy.rst b/Documentation/networking/phy.rst
index b2f7ec794bc8..399f17976a6c 100644
--- a/Documentation/networking/phy.rst
+++ b/Documentation/networking/phy.rst
@@ -286,6 +286,11 @@ Some of the interface modes are described below:
Note: due to legacy usage, some 10GBASE-R usage incorrectly makes
use of this definition.
+``PHY_INTERFACE_MODE_100BASEX``
+ This defines IEEE 802.3 Clause 24. The link operates at a fixed data
+ rate of 125Mpbs using a 4B/5B encoding scheme, resulting in an underlying
+ data rate of 100Mpbs.
+
Pause frames / flow control
===========================
diff --git a/drivers/net/phy/sfp-bus.c b/drivers/net/phy/sfp-bus.c
index cdfa0a190962..3c67ad9951ab 100644
--- a/drivers/net/phy/sfp-bus.c
+++ b/drivers/net/phy/sfp-bus.c
@@ -265,6 +265,12 @@ void sfp_parse_support(struct sfp_bus *bus, const struct sfp_eeprom_id *id,
br_min <= 1300 && br_max >= 1200)
phylink_set(modes, 1000baseX_Full);
+ /* 100Base-FX, 100Base-LX, 100Base-PX, 100Base-BX10 */
+ if (id->base.e100_base_fx || id->base.e100_base_lx)
+ phylink_set(modes, 100baseFX_Full);
+ if ((id->base.e_base_px || id->base.e_base_bx10) && br_nom == 100)
+ phylink_set(modes, 100baseFX_Full);
+
/* For active or passive cables, select the link modes
* based on the bit rates and the cable compliance bytes.
*/
@@ -389,6 +395,9 @@ phy_interface_t sfp_select_interface(struct sfp_bus *bus,
if (phylink_test(link_modes, 1000baseX_Full))
return PHY_INTERFACE_MODE_1000BASEX;
+ if (phylink_test(link_modes, 100baseFX_Full))
+ return PHY_INTERFACE_MODE_100BASEX;
+
dev_warn(bus->sfp_dev, "Unable to ascertain link mode\n");
return PHY_INTERFACE_MODE_NA;
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 9effb511acde..24fcc6456a9e 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -104,6 +104,7 @@ extern const int phy_10gbit_features_array[1];
* @PHY_INTERFACE_MODE_MOCA: Multimedia over Coax
* @PHY_INTERFACE_MODE_QSGMII: Quad SGMII
* @PHY_INTERFACE_MODE_TRGMII: Turbo RGMII
+ * @PHY_INTERFACE_MODE_100BASEX: 100 BaseX
* @PHY_INTERFACE_MODE_1000BASEX: 1000 BaseX
* @PHY_INTERFACE_MODE_2500BASEX: 2500 BaseX
* @PHY_INTERFACE_MODE_RXAUI: Reduced XAUI
@@ -135,6 +136,7 @@ typedef enum {
PHY_INTERFACE_MODE_MOCA,
PHY_INTERFACE_MODE_QSGMII,
PHY_INTERFACE_MODE_TRGMII,
+ PHY_INTERFACE_MODE_100BASEX,
PHY_INTERFACE_MODE_1000BASEX,
PHY_INTERFACE_MODE_2500BASEX,
PHY_INTERFACE_MODE_RXAUI,
@@ -217,6 +219,8 @@ static inline const char *phy_modes(phy_interface_t interface)
return "usxgmii";
case PHY_INTERFACE_MODE_10GKR:
return "10gbase-kr";
+ case PHY_INTERFACE_MODE_100BASEX:
+ return "100base-x";
default:
return "unknown";
}