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Part Number: BEAGLEBK
We are thinking to change our design that bases on Beaglebone Black from a 100M PHY to a Gigabit PHY.
The questions are:
1. What software changes will require at u-boot, device tree, and Linux kernel levels?
2. Will this cause any performance issues for software?
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In reply to Biser Gatchev-XID:
In reply to Matt Tsai52:
In reply to Schuyler Patton:
Good summary, I will highlight a few things based on the summary:
- Using drivers that are supported will make the porting effort a little easier since the make and config files are already present to integrate the PHY.
- Concerning the DTS file in u-boot and the kernel is that phy-mode, phy timing and phy addressing are the changes to be aware of here. I would also add is to consult the u-boot board.c code and look at the support of the evm-sk and the gp-evm to see anything specific to enabling Gbps PHYs.
- I recommend using the pin mux tool to assist with pin mux changes.
I would like to add that switching to a Gbps PHY can bring layout challenges. I would highly recommend looking at this document on high speed layout for recommendations.
That is all I can think of for the moment.
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