This adds the documentation for debugfs files residing in /sys/kernel/debug/mdio_bus. These files are created when CONFIG_MDIO_BUS_DEBUGFS option is enabled.
Signed-off-by: Marek Behún <marek.be...@nic.cz> --- Documentation/ABI/testing/debugfs-mdio_bus | 29 ++++++++++++++++++++++ 1 file changed, 29 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-mdio_bus diff --git a/Documentation/ABI/testing/debugfs-mdio_bus b/Documentation/ABI/testing/debugfs-mdio_bus new file mode 100644 index 000000000000..4cd60869c896 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-mdio_bus @@ -0,0 +1,29 @@ +What: /sys/kernel/debug/mdio_bus/<MDIO_BUS>/addr +Date: July 2020 +KernelVersion: 5.9 +Contact: Marek Behún <marek.be...@nic.cz> +Description: (RW) Address of the PHY device on the MDIO bus which should be + read from/written to when accessing the "val" file in this + directory. + Format: %u + +What: /sys/kernel/debug/mdio_bus/<MDIO_BUS>/reg +Date: July 2020 +KernelVersion: 5.9 +Contact: Marek Behún <marek.be...@nic.cz> +Description: (RW) Register number of the PHY device selected by the "addr" + file in this directory, which should be read from/written to + when accessing the "val" file in this directory. + To access Clause 45 register do a bitwise or with MII_ADDR_C45 + (=0x40000000). + Format: %u + +What: /sys/kernel/debug/mdio_bus/<MDIO_BUS>/val +Date: July 2020 +KernelVersion: 5.9 +Contact: Marek Behún <marek.be...@nic.cz> +Description: (RW) Value of the register specified by the "reg" file of the + PHY device specified by the "addr" file in this directory. + Reading/writing this file calls directly function + mdiobus_read/mdiobus_write with arguments from these files. + Format: 0x%04x -- 2.26.2
