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net: phy: Add 25G BASE-R interface mode 

Add 25gbase-r phy interface mode

Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: Bjarni Jonasson <bjarni.jonasson@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Steen Hegelund 2021-06-11 14:54:51 +02:00 committed by David S. Miller
parent 858252c9c3
commit a56c286865
2 changed files with 10 additions and 0 deletions
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6
Documentation/networking/phy.rst
View File

@ -292,6 +292,12 @@ 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_25GBASER``
This is the IEEE 802.3 PCS Clause 107 defined 25GBASE-R protocol.
The PCS is identical to 10GBASE-R, i.e. 64B/66B encoded
running 2.5 as fast, giving a fixed bit rate of 25.78125 Gbaud.
Please refer to the IEEE standard for further information.
``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

4
include/linux/phy.h
View File

@ -112,6 +112,7 @@ extern const int phy_10gbit_features_array[1];
* @PHY_INTERFACE_MODE_RXAUI: Reduced XAUI
* @PHY_INTERFACE_MODE_XAUI: 10 Gigabit Attachment Unit Interface
* @PHY_INTERFACE_MODE_10GBASER: 10G BaseR
* @PHY_INTERFACE_MODE_25GBASER: 25G BaseR
* @PHY_INTERFACE_MODE_USXGMII: Universal Serial 10GE MII
* @PHY_INTERFACE_MODE_10GKR: 10GBASE-KR - with Clause 73 AN
* @PHY_INTERFACE_MODE_MAX: Book keeping
@ -147,6 +148,7 @@ typedef enum {
PHY_INTERFACE_MODE_XAUI,
/* 10GBASE-R, XFI, SFI - single lane 10G Serdes */
PHY_INTERFACE_MODE_10GBASER,
PHY_INTERFACE_MODE_25GBASER,
PHY_INTERFACE_MODE_USXGMII,
/* 10GBASE-KR - with Clause 73 AN */
PHY_INTERFACE_MODE_10GKR,
@ -223,6 +225,8 @@ static inline const char *phy_modes(phy_interface_t interface)
return "xaui";
case PHY_INTERFACE_MODE_10GBASER:
return "10gbase-r";
case PHY_INTERFACE_MODE_25GBASER:
return "25gbase-r";
case PHY_INTERFACE_MODE_USXGMII:
return "usxgmii";
case PHY_INTERFACE_MODE_10GKR: