Hello The RGMII internal delay is a common setting found in most RGMII capable PHY devices. It was found that many vendor specific device tree properties exist to do the same function. This creates a common property to be used for PHY's that have internal delays for the Rx and Tx paths.
If the internal delay is tunable then the caller needs to pass the internal delay array and the return will be the index in the array that was found in the firmware node. If the internal delay is fixed then the caller only needs to indicate which delay to return. There is no need for a fixed delay to add device properties since the value is not configurable. Per the ethernet-controller.yaml the interface type indicates that the PHY should provide the delay. This series contains examples of both a configurable delay and a fixed delay. Dan Murphy (5): dt-bindings: net: Add tx and rx internal delays net: phy: Add a helper to return the index for of the internal delay dt-bindings: net: Add RGMII internal delay for DP83869 net: dp83869: Add RGMII internal delay configuration net: phy: DP83822: Add setting the fixed internal delay .../devicetree/bindings/net/ethernet-phy.yaml | 12 +++ .../devicetree/bindings/net/ti,dp83869.yaml | 16 ++- drivers/net/phy/dp83822.c | 79 ++++++++++++-- drivers/net/phy/dp83869.c | 53 +++++++++- drivers/net/phy/phy_device.c | 100 ++++++++++++++++++ include/linux/phy.h | 4 + 6 files changed, 250 insertions(+), 14 deletions(-) -- 2.26.2
