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authorRussell King (Oracle) <rmk+kernel@armlinux.org.uk>2021-11-27 00:18:01 +0000
committerRussell King (Oracle) <rmk+kernel@armlinux.org.uk>2022-01-18 10:17:22 +0000
commit0f38de4d4a010083ef5d1864c5d6ced8961c31c1 (patch)
treedb31e2b03e47c6f12df0e512345a972a77b6583b
parentd5b9f8c5121b9a8734ddc2ceaa15f2734a361f70 (diff)
net: phy: add possible interfaces
Add a possible_interfaces member to struct phy_device to indicate which interfaces a clause 45 PHY may switch between depending on the media. This must be populated by the PHY driver by the time the .config_init() method completes according to the PHYs host-side configuration. For example, the Marvell 88x3310 PHY can switch between 10GBASE-R, 5GBASE-R, 2500BASE-X, and SGMII on the host side depending on the media side speed, so all these interface modes are set in the possible_interfaces member. This allows phylib users (such as phylink) to know in advance which interface modes to expect, which allows them to appropriately restrict the advertised link modes according to the capabilities of other parts of the link. Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
-rw-r--r--include/linux/phy.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/phy.h b/include/linux/phy.h
index 4df7df872d79..4f005f06298e 100644
--- a/include/linux/phy.h
+++ b/include/linux/phy.h
@@ -631,6 +631,7 @@ struct phy_device {
u32 dev_flags;
phy_interface_t interface;
+ DECLARE_PHY_INTERFACE_MASK(possible_interfaces);
/*
* forced speed & duplex (no autoneg)