diff options
| author | Russell King (Oracle) <rmk+kernel@armlinux.org.uk> | 2023-08-26 13:02:51 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2023-08-28 22:55:04 +0300 |
| commit | a014c35556b9045ece8426df2b38eb3c5e1c1aa0 (patch) | |
| tree | 9a25c470f367141136e5fca13731c612542921ad /include | |
| parent | 72f93a3136ee18fd59fa6579f84c07e93424681e (diff) | |
| download | linux-a014c35556b9045ece8426df2b38eb3c5e1c1aa0.tar.xz | |
net: stmmac: clarify difference between "interface" and "phy_interface"
Clarify the difference between "interface" and "phy_interface" in
struct plat_stmmacenet_data, both by adding a comment, and also
renaming "interface" to be "mac_interface". The difference between
these are:
MAC ----- optional PCS ----- SerDes ----- optional PHY ----- Media
^ ^
mac_interface phy_interface
Note that phylink currently only deals with phy_interface.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://lore.kernel.org/r/E1qZq83-005tts-6K@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Diffstat (limited to 'include')
| -rw-r--r-- | include/linux/stmmac.h | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/include/linux/stmmac.h b/include/linux/stmmac.h index b2ccd827bb80..ce89cc3e4913 100644 --- a/include/linux/stmmac.h +++ b/include/linux/stmmac.h @@ -223,7 +223,20 @@ struct dwmac4_addrs { struct plat_stmmacenet_data { int bus_id; int phy_addr; - int interface; + /* MAC ----- optional PCS ----- SerDes ----- optional PHY ----- Media + * ^ ^ + * mac_interface phy_interface + * + * mac_interface is the MAC-side interface, which may be the same + * as phy_interface if there is no intervening PCS. If there is a + * PCS, then mac_interface describes the interface mode between the + * MAC and PCS, and phy_interface describes the interface mode + * between the PCS and PHY. + */ + phy_interface_t mac_interface; + /* phy_interface is the PHY-side interface - the interface used by + * an attached PHY. + */ phy_interface_t phy_interface; struct stmmac_mdio_bus_data *mdio_bus_data; struct device_node *phy_node; |