dt-bindings: net: Add the old DT bindings for "fixed-link"

2021-04-15T08:52:17Z

Per the upstream Linux kernel doc: Documentation/devicetree/bindings/net/ethernet-controller.yaml There are two ways to describe a fixed PHY attached to an Ethernet device. This updates our dt-bindings doc to add the old DT bindings. Signed-off-by: Bin Meng Reviewed-by: Ramon Fried Reviewed-by: Vladimir Oltean Reviewed-by: Priyanka Jain

drivers/net/phy: add fixed-phy / fixed-link support

2017-03-26T14:58:26Z

This patch adds support for having a "fixed-link" to some other MAC (like some embedded switch-device). For this purpose we introduce a new phy-driver, called "Fixed PHY". Fixed PHY works only with CONFIG_DM_ETH enabled, since the fixed-link is described with a subnode below ethernet interface. Most ethernet drivers (unfortunately not all are following same scheme for searching/attaching phys) are calling "phy_connect(...)" for getting a phy-device. At this point we link in, we search here for a subnode called "fixed- link", once found we start phy_device_create(...) with the special phy- id PHY_FIXED_ID (0xa5a55a5a). During init the "Fixed PHY" driver has registered with this id and now gets probed, during probe we get all the details about fixed-link out of dts, later on the phy reports this values. Signed-off-by: Hannes Schmelzer Signed-off-by: Hannes Schmelzer Acked-by: Joe Hershberger Reviewed-by: Christian Gmeiner

u-boot.git/doc/device-tree-bindings/net/fixed-link.txt, branch main

dt-bindings: net: Add the old DT bindings for "fixed-link"

drivers/net/phy: add fixed-phy / fixed-link support