Xilinx DTS files are using two way how to describe ethernet phy.
The first (already supported) has phy as subnode of gem node. eth { phy-handle = <&phy0>; phy0: ethernet-phy@21 { ... }; };
The second has mdio subnode (with mdio name) which has phy subnode. This structure allow hadling MDIO reset signal (based on Linux mdio.yaml) eth { phy-handle = <&phy0>; mdio { phy0: ethernet-phy@21 { ... }; }; };
This patch adds support for the second case where mdio subnode is found driver will look at its parent to find out which gem is handling MDIO bus.
Signed-off-by: Michal Simek michal.simek@xilinx.com ---
Changes in v2: - update commit message
drivers/net/zynq_gem.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/drivers/net/zynq_gem.c b/drivers/net/zynq_gem.c index 3e227725022d..fece077066df 100644 --- a/drivers/net/zynq_gem.c +++ b/drivers/net/zynq_gem.c @@ -846,6 +846,9 @@ static int zynq_gem_of_to_plat(struct udevice *dev) SPEED_1000);
parent = ofnode_get_parent(phandle_args.node); + if (ofnode_name_eq(parent, "mdio")) + parent = ofnode_get_parent(parent); + addr = ofnode_get_addr(parent); if (addr != FDT_ADDR_T_NONE) { debug("MDIO bus not found %s\n", dev->name);