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authorFlorian Fainelli2021-03-10 14:12:43 -0800
committerDavid S. Miller2021-03-11 12:47:27 -0800
commitb0bade515d360800fc701e1a965cf41adcc4ec1b (patch)
tree992ef4a633b4924b4aafe733dc429b7d1dcee079 /Documentation
parentee47ed08d75e8f16b3cf882061ee19c2ea19dd6c (diff)
net: phy: Expose phydev::dev_flags through sysfs
phydev::dev_flags contains a bitmask of configuration bits requested by the consumer of a PHY device (Ethernet MAC or switch) towards the PHY driver. Since these flags are often used for requesting LED or other type of configuration being able to quickly audit them without instrumenting the kernel is useful. Signed-off-by: Florian Fainelli <f.fainelli@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/ABI/testing/sysfs-class-net-phydev12
1 files changed, 12 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-class-net-phydev b/Documentation/ABI/testing/sysfs-class-net-phydev
index 40ced0ea4316..ac722dd5e694 100644
--- a/Documentation/ABI/testing/sysfs-class-net-phydev
+++ b/Documentation/ABI/testing/sysfs-class-net-phydev
@@ -51,3 +51,15 @@ Description:
Boolean value indicating whether the PHY device is used in
standalone mode, without a net_device associated, by PHYLINK.
Attribute created only when this is the case.
+
+What: /sys/class/mdio_bus/<bus>/<device>/phy_dev_flags
+Date: March 2021
+KernelVersion: 5.13
+Contact: netdev@vger.kernel.org
+Description:
+ 32-bit hexadecimal number representing a bit mask of the
+ configuration bits passed from the consumer of the PHY
+ (Ethernet MAC, switch, etc.) to the PHY driver. The flags are
+ only used internally by the kernel and their placement are
+ not meant to be stable across kernel versions. This is intended
+ for facilitating the debugging of PHY drivers.