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am335 linux下 mdio的总线只能由 ethx 去间接访问 产看寄存器,如何直接把mdio暴露到用户层



怎么操作,现在系统上另外一个phy的控制希望am335 只是作为配置口去配置,通用方法都是通过linux下eth 去间接读写  如何能想i2C这样 open write