kernel/linux.git/Documentation/networking/phy.rst, branch v6.6.131

net: phy: Introduce PSGMII PHY interface mode

2023-08-14T07:12:53+00:00

The PSGMII interface is similar to QSGMII. The main difference is that the PSGMII interface combines five SGMII lines into a single link while in QSGMII only four lines are combined. Similarly to the QSGMII, this interface mode might also needs special handling within the MAC driver. It is commonly used by Qualcomm with their QCA807x PHY series and modern WiSoC-s. Add definitions for the PHY layer to allow to express this type of connection between the MAC and PHY. Signed-off-by: Gabor Juhos Signed-off-by: Robert Marko Signed-off-by: David S. Miller

Documentation: networking: correct spelling

2023-01-31T12:00:47+00:00

Correct spelling problems for Documentation/networking/ as reported by codespell. Signed-off-by: Randy Dunlap Cc: Jonathan Corbet Cc: linux-doc@vger.kernel.org Cc: Jiri Pirko Cc: "David S. Miller" Cc: Eric Dumazet Cc: Jakub Kicinski Cc: Paolo Abeni Cc: netdev@vger.kernel.org Link: https://lore.kernel.org/r/20230129231053.20863-5-rdunlap@infradead.org Signed-off-by: Paolo Abeni

docs: networking: phy: add missing space

2022-10-06T03:32:39+00:00

Missing space between "pins'" and "strength" Signed-off-by: Casper Andersson Reviewed-by: Bagas Sanjaya Link: https://lore.kernel.org/r/20221004073242.304425-1-casper.casan@gmail.com Signed-off-by: Jakub Kicinski

net: phy: Add 1000BASE-KX interface mode

2022-09-05T13:30:42+00:00

Add 1000BASE-KX interface mode. This 1G backplane ethernet as described in clause 70. Clause 73 autonegotiation is mandatory, and only full duplex operation is supported. Although at the PMA level this interface mode is identical to 1000BASE-X, it uses a different form of in-band autonegation. This justifies a separate interface mode, since the interface mode (along with the MLO_AN_* autonegotiation mode) sets the type of autonegotiation which will be used on a link. This results in more than just electrical differences between the link modes. With regard to 1000BASE-X, 1000BASE-KX holds a similar position to SGMII: same signaling, but different autonegotiation. PCS drivers (which typically handle in-band autonegotiation) may only support 1000BASE-X, and not 1000BASE-KX. Similarly, the phy mode is used to configure serdes phys with phy_set_mode_ext. Due to the different electrical standards (SFI or XFI vs Clause 70), they will likely want to use different configuration. Adding a phy interface mode for 1000BASE-KX helps simplify configuration in these areas. Signed-off-by: Sean Anderson Signed-off-by: David S. Miller

net: phy: Introduce QUSGMII PHY mode

2022-08-22T12:46:26+00:00

The QUSGMII mode is a derivative of Cisco's USXGMII standard. This standard is pretty similar to SGMII, but allows for faster speeds, and has the build-in bits for Quad and Octa variants (like QSGMII). The main difference with SGMII/QSGMII is that USXGMII/QUSGMII re-uses the preamble to carry various information, named 'Extensions'. As of today, the USXGMII standard only mentions the "PCH" extension, which is used to convey timestamps, allowing in-band signaling of PTP timestamps without having to modify the frame itself. This commit adds support for that mode. When no extension is in use, it behaves exactly like QSGMII, although it's not compatible with QSGMII. Signed-off-by: Maxime Chevallier Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

docs: networking: phy: Fix a typo

2022-06-14T06:12:44+00:00

Write "to be operated" instead of "to be operate". Signed-off-by: Jonathan Neuschäfer Reviewed-by: Andrew Lunn Link: https://lore.kernel.org/r/20220610072809.352962-1-j.neuschaefer@gmx.net Signed-off-by: Jakub Kicinski

net: document SMII and correct phylink's new validation mechanism

2021-11-17T03:22:30+00:00

SMII has not been documented in the kernel, but information on this PHY interface mode has been recently found. Document it, and correct the recently introduced phylink handling for this interface mode. Signed-off-by: Russell King (Oracle) Reviewed-by: Andrew Lunn Link: https://lore.kernel.org/r/E1mmfVl-0075nP-14@rmk-PC.armlinux.org.uk Signed-off-by: Jakub Kicinski

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

2021-06-12T20:08:57+00:00

Add 25gbase-r phy interface mode Signed-off-by: Steen Hegelund Signed-off-by: Bjarni Jonasson Reviewed-by: Andrew Lunn Reviewed-by: Russell King (Oracle) Signed-off-by: David S. Miller

docs: networking: phy: Improve placement of parenthesis

2021-03-12T20:29:11+00:00

"either" is outside the parentheses, so the matching "or" should be too. Signed-off-by: Jonathan Neuschäfer Reviewed-by: Andrew Lunn Signed-off-by: David S. Miller

net: phy: Add 5GBASER interface mode

2021-02-16T22:15:12+00:00

Add 5GBASE-R phy interface mode Signed-off-by: Pavana Sharma Reviewed-by: Andrew Lunn Reviewed-by: Florian Fainelli Signed-off-by: Marek Behún Signed-off-by: David S. Miller