cortina_read_reg
gpio_int_status = cortina_read_reg(phydev, VILLA_GLOBAL_GPIO_1_INTS);
id_lsb = cortina_read_reg(phydev, VILLA_GLOBAL_CHIP_ID_LSB);
id_msb = cortina_read_reg(phydev, VILLA_GLOBAL_CHIP_ID_MSB);