MDIO device at address 4 is missing. Working case: libphy: GPIO Bitbanged MDIO: probed switch0: Atheros AR8337 rev. 2 switch registered on gpio-0 So this patch introduces reset GPIO, along with duration and active high/low properties which fixes the problem. While writing documentation for ...
//bit[11:10]:0x0—— Write Address Register //bit[9:5]:写入SMI设备地址-0x15——Port 10 Lane 1 = Port 5 & its registers are accessed at SMI address 0x15 //bit[4:0]:device class(clause 45) //第一个地址帧的后16位为Addr,即data register中的数据0x2000 miiwrite 0x1c 0x19 0x8140...
gpio_dev.value=; at91_set_gpio_value(gpio_dev.pin,gpio_dev.value); } /* 获得MDIO的数据,只获得一个bit */ staticintGET_MDIO(void) { gpio_cblk_tgpio_dev; gpio_dev.pin=MDIO; gpio_dev.value=at91_get_gpio_value(gpio_dev.pin); returngpio_dev.value; } /* 设置MDIO的数据,一个bit ...
[ 436.828834] mdio_bus 2090f00.mdio: cannot get PHY at address 0 They can't find PHY address, I think. I set address using "reg" keyword in mdio/phyX. How to know all phy addresses connected Device? Regards. Shin. Up0TrueDown ...
Perform an Avalon-MM master write to the MDIO core registers at address offset 0x21, specifying the external PHY device address (MDIO_DEVAD), port-address (MDIO_PRTAD) and register address (MDIO_REGAD). Issue an Avalon-MM master read of the 32-bit MDIO_ACCESS register ...
at moment I can not change the PHY ID because I am using the card with an application SW that runs only with address ID = 0x02. I think that the ID = 0x02 is read correctly by DP83848 device but the MDIO interface responds wrong. ...
To access each PHY device, write the PHY address to the MDIO register (mdio_addr0/1) followed by the transaction data (MDIO Space 0/1). For faster access, the MAC function allows up to two PHY devices to be mapped in its register space at any one time. Subsequent transactions to the...
same period as the MDC clock. The MDIO bits are latched on the rising edge of the MDC clock. MDC may be stopped between frames provided no timing requirements are violated.MDC must be active during each valid bit of every frame, including all preamble, instruction, address, data, and at ...
We already enable MDIO, MDIO_DEVICE and IXGBE now. Is there anything else missing? Another question is how to check the NVM is configured to use MDIO functions, because the MDIO and LED functions share the same interface pins. Is it probably the reason why we can't get MDC/MDIO signal?
Physical Address REGAD Register Address TA Turnaround Write Transaction This Figureshows a write transaction across the MDIO, defined as OP = "01." The addressed PHY device (with physical address PHYAD) takes the 16-bit word in the Data field and writes it to the register at REGAD. ...