PTP software timestamp support for Raspberry pi 4 B

Rasbian Linux Kernel version: 4.19

Ethernet driver: bcmgenet

Patch: bcmgenet-ptp-support.patch

Overview of Application steps:

1- Pull the kernel source and apply the patch. 2- Edit config and set the parameters given below:

• CONFIG_PTP_1588_CLOCK=y

• CONFIG_NETWORK_PHY_TIMESTAMPING=y

3- Rebuild kernel and install new modules.

4- Configure ptp4l for both master and slaves.

TODO

• More detailed instructions