* [PATCH net-next 2/4] net: phy: Add 25G BASE-R interface mode
[not found] <20210611125453.313308-1-steen.hegelund@microchip.com>
@ 2021-06-11 12:54 ` Steen Hegelund
2021-06-12 18:06 ` Andrew Lunn
2021-06-12 18:52 ` Russell King (Oracle)
0 siblings, 2 replies; 3+ messages in thread
From: Steen Hegelund @ 2021-06-11 12:54 UTC (permalink / raw)
To: Russell King, Andrew Lunn, Heiner Kallweit, David S. Miller,
Jakub Kicinski, netdev, linux-kernel, Jonathan Corbet, linux-doc
Cc: Steen Hegelund, Bjarni Jonasson
Add 25gbase-r phy interface mode
Signed-off-by: Steen Hegelund <steen.hegelund@microchip.com>
Signed-off-by: Bjarni Jonasson <bjarni.jonasson@microchip.com>
---
Documentation/networking/phy.rst | 6 ++++++
include/linux/phy.h | 4 ++++
2 files changed, 10 insertions(+)
diff --git a/Documentation/networking/phy.rst b/Documentation/networking/phy.rst
index 3f05d50ecd6e..571ba08386e7 100644
--- a/Documentation/networking/phy.rst
+++ b/Documentation/networking/phy.rst
@@ -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
diff --git a/include/linux/phy.h b/include/linux/phy.h
index ed332ac92e25..70a1399ff454 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -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:
--
2.32.0
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