DP83640: Want to use DP83640 with as a PTP Grandmaster with GPS Receiver

Harshil Thakkar

Part Number: DP83640
Other Parts Discussed in Thread: , AM3354

Want to use DP83640 with GPS Receiver which is accurate time source. If you have any reference design then pleas provide us. We are using linuxptp for PTP. Processor being used by us is AM335x.

over 5 years ago

0 Ross Pimentel over 5 years ago

TI__Mastermind 23675 points

Hi Harshil,

Our references are found in the DP83640 product folder:

https://www.ti.com/product/DP83640/technicaldocuments

0 Harshil Thakkar over 5 years ago in reply to Ross Pimentel

Prodigy 70 points

Thank you for the reply.

I am using DP83640T-EVK with RMII. I have connected RMII2 interface with DP83640. I am using AM3354 processor.

Below is my hardware configuration details.

           0x870 (PIN_INPUT_PULLDOWN | MUX_MODE3) /* (T17) gpmc_wait0.rmii2_crs_dv */
           0x874 (PIN_INPUT_PULLDOWN | MUX_MODE3) /* (U17) gpmc_wpn.rmii2_rxer */
           0x840 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* (R13) gpmc_a0.rmii2_txen */
           0x854 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* (V15) gpmc_a5.rmii2_txd0 */
           0x850 (PIN_OUTPUT_PULLDOWN | MUX_MODE3) /* (R14) gpmc_a4.rmii2_txd1 */
           0x86c (PIN_INPUT_PULLDOWN | MUX_MODE3) /* (V17) gpmc_a11.rmii2_rxd0 */
           0x868 (PIN_INPUT_PULLDOWN | MUX_MODE3) /* (T16) gpmc_a10.rmii2_rxd1 */
           0x908 (PIN_INPUT_PULLDOWN | MUX_MODE1) /* (H16) gmii1_col.rmii2_refclk */

I have also enabled in PHY timestamping and DP83640 driver in the kernel. I am getting Phy id as well MAC address for ethernet phy but not able to get communication from DP83640.

I have tried with DHCP as well as assigned static IP.

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DP83640: Want to use DP83640 with as a PTP Grandmaster with GPS Receiver