针对你提出的“can't register mdio bus”问题,以下是一些可能的解决步骤和考虑因素,帮助你定位和解决问题: 检查MDIO总线驱动是否正确加载: 确保MDIO总线驱动已经正确加载到内核中。你可以通过以下命令来检查MDIO驱动模块是否已经加载: bash lsmod | grep mdio 如果驱动没有加载,你可以尝试手动加载它,使用如下命令:...
EXPORT_SYMBOL(mdiobus_alloc); 2.填充mii_bus的结构体成员 mii_bus->name = ; mii_bus->read = ; mii_bus->write = ; mii_bus->reset = ; mii_bus->parent = ; mii_bus->priv = ; mii_bus->id = ; 3.注册mii_bus int mdiobus_register(struct mii_bus *bus) { int i, err; if (N...
例如,使用mdio命令读取PHY寄存器的内容可以使用类似以下的命令:mdio_read。 4. Linux内核驱动程序支持:Linux内核提供了mdio_bus驱动程序和mdio_dev驱动程序,用来支持MDIO总线的操作。mdio_bus驱动管理MDIO总线的初始化和注册,mdio_dev驱动管理具体的PHY设备。用户可以通过驱动程序接口来使用mdio命令。 5. MDIO控制器:在L...
Phy device主要是对phy的抽象,而net_device主要是对mac的抽象,而mdio总线以及mii_bus主要用于对phy设备的控制(包括设置phy设备的工作模式、速率模式、是否为自适应、phy的link状态等),而net_device需要根据phy的工作模式、速率模式、phy的link状态进行状态的同步,因此需要将net_device与phy device进行绑定与解绑。本章...
Linux Mii management/mdio子系统分析之三 mii_bus注册、注销及其驱动开发流程,程序员大本营,技术文章内容聚合第一站。
As shown inThis Figure, two PHY devices are attached to the MDIO bus. Each of these has a different physical address. To address the intended PHY, its physical address should be known by the MDIO master (in this case, an Ethernet MAC) and placed into the physical address (PHYAD) field...
mdio_bus: Add generic mdio_find_bus() Browse files It appears most ethernet drivers follow one of two main strategies for mdio bus/phy management. A monolithic model where the net driver itself creates, probes and uses the phy, and one where an external mdio/phy driver instantiates the ...
static int __init octeon_mdiobus_mod_init(void) { //同uart,usb,spi,i2c等总线一样, mdio作为platform驱动注册到内核return platform_driver_register(&octeon_mdiobus_driver); } static struct platform_driver octeon_mdiobus_driver = { .driver = { ...
mdiobus_register_device); intmdiobus_unregister_device(structmdio_device*mdiodev) { if(mdiodev->bus->mdio_map[mdiodev->addr]!=mdiodev) return-EINVAL; reset_control_put(mdiodev->reset_ctrl); mdiodev->bus->mdio_map[mdiodev->addr
││ <*> MMIO device-controlled MDIO bus multiplexers ││ 2、移植设备树 aliases { ……… mdio-gpio0 = &mdio0; }; mdio0: mdio { compatible = "virtual,mdio-gpio"; gpios = <&portc 2 0 >,<&portc 3 0>; #address-cells= <1>; #size...