No license, either express or implied, by estoppel or otherwise, is granted by TI. I am having some problems to see you images. It’s likely that this is your problem. Ethernet family of local area network technologies. In an FPGA based system, there are three stages where the required skew ie. How did you decide these values?
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Linux on P4080 + external PHY through RGMII: slow ping + total freeze without error message
This phy’s address should also match the phy address in the DTS. If you have a related question, please click the ” Ask a related question ” button in the top right corner.
The first 16 addresses have a defined usage,  while the others kinux device specific. The RMII signals are treated as lumped signals rather than transmission lines; no termination or controlled impedance is necessary; output drive and thus slew rates need to be as slow as possible rise times from tgmii ns to permit this. Do you know if this is due to xgmiitorgmii is not working well? I created 2 files: In reply to Stanislav Stilyanov:.
[1/2] Documentation: devicetree: clarify usage of the RGMII phy-modes – Patchwork
Here are the required configurations for each of the three MAC options: You can use u-boot’s mdio utility. Apr 26, 7: Input high threshold is 2. Post as linud guest Name. ChromeFirefoxInternet Explorer 11Safari.
RGMII Interface Timing Considerations | Ethernet FMC
Sign up using Facebook. Views Read Edit View history. At power up, using autonegotiationthe PHY usually adapts to whatever it is connected to unless settings are altered via the MDIO interface.
I’ve read many forum posts, and all show different device tree nodes. Data is rmgii on the rising edge only i. Adding the clock skew. Apr 27, The original MII transfers network data using 4-bit nibbles in each direction 4 transmit data bits, 4 receive data bits.
Based on them I have changed my device tree and now kernel detects the phy Instead of the Marvell phy I am using Micrel but xgmiitorgmii is lonux some problems as I see in the kernel log:. Both paths have an independent clock, 4 data signals and a control signal. The transmit enable signal is held high during frame transmission and low when the transmitter is idle.
TI is a rvmii semiconductor design and manufacturing company. And now I am little confused as to what constitutes an Ethernet? The standard MII features a small set of registers: