From 5fe419ef2a6154e83aab04c65ec906fef96eb5be Mon Sep 17 00:00:00 2001 From: Ye Li Date: Sun, 3 May 2020 22:41:14 +0800 Subject: net: Add eth phy generic driver for shared MDIO For dual ethernet controllers, the HW design may connect ETH phys to one MDIO ports. So two different ethernet drivers have to share MDIO bus. Since two ethernet drivers are independent, we can't ensure their probe order. To resolve this problem, introduce an eth phy generic driver and uclass. After eth-uclass binds, we search the mdio node and binds the phy node with the eth-phy-generic driver. When one eth driver get its phy device, the parent of phy device will probe prior than phy device. So this ensure the eth driver ownes the MDIO bus will be probed before using its MDIO. Signed-off-by: Ye Li Signed-off-by: Peng Fan --- include/eth_phy.h | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) create mode 100644 include/eth_phy.h (limited to 'include/eth_phy.h') diff --git a/include/eth_phy.h b/include/eth_phy.h new file mode 100644 index 0000000000..19c496551b --- /dev/null +++ b/include/eth_phy.h @@ -0,0 +1,17 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * Copyright 2020 NXP + */ + +#ifndef _eth_phy_h_ +#define _eth_phy_h_ + +#include +#include + +int eth_phy_binds_nodes(struct udevice *eth_dev); +int eth_phy_set_mdio_bus(struct udevice *eth_dev, struct mii_dev *mdio_bus); +struct mii_dev *eth_phy_get_mdio_bus(struct udevice *eth_dev); +int eth_phy_get_addr(struct udevice *dev); + +#endif -- cgit