topic Cannot initialize PHY. , error in lwip in i.MX RT Crossover MCUs

Cannot initialize PHY. , error in lwip

sajithdevidas — Fri, 28 Jun 2024 15:20:23 GMT

Hi,

I'm working on Ethernet with the RT1170, and I used the SDK example "lwip_ping_bm_cm7." I'm working on a custom board with a different Ethernet module (DP83848QSQE/NOPB) on board. I configured all the pins and the physical address correctly, and I enabled the preprocessor "BOARD_NETWORK_USE_100M_ENET_PORT."

However, it shows "PHY Initialization failed."

Can anyone please help with this?

@kerryzhou #rt1176 #ethernet

Re: Cannot initialize PHY. , error in lwip

carstengroen — Sat, 29 Jun 2024 18:09:24 GMT

What happens in the code when you debug ?

Normally its a good idea to at least get some idea of what's wrong

Re: Cannot initialize PHY. , error in lwip

sajithdevidas — Mon, 01 Jul 2024 07:08:04 GMT

here where, it is hanging

Re: Cannot initialize PHY. , error in lwip

carstengroen — Mon, 01 Jul 2024 07:49:48 GMT

Yes, then work your way backwards from there (check "pcMessage" etc) and find out exactly why the operation ends up in an assert. Just plain debugging

Re: Cannot initialize PHY. , error in lwip

sajithdevidas — Mon, 01 Jul 2024 08:28:46 GMT

We identified the issue: the example code uses the PHY driver for the "ksz8081" because the EVK board comes with the "ksz8081" Ethernet chip. However, my custom board uses the "DP8384Q" chip. Therefore, we need to change the PHY layer drivers to support the "DP8384Q."

My questions are:

Can we obtain PHY driver files for the "DP8384Q" from NXP, or do we need to develop them manually?
The internet provides PHY driver files for the "DP8384Q." Can we use those directly without any modifications,if i use those, should i use the "fsl_phy.h", in the component folder?
The "fsl_phy.h" code relates to accessing the PHY peripheral on the RT1170 controller. In the "ksz8081" driver, it uses the PHY peripheral registers of the RT1170 controller for various operations. Apart from the Ethernet chip, do we need to configure or modify the driver to work with the PHY peripheral of the RT1170 controller?

Re: Cannot initialize PHY. , error in lwip

Omar_Anguiano — Thu, 04 Jul 2024 23:42:52 GMT

Helloo, I hope you are well.

1. Unfortunately, we don’t have the driver for that PHY.
2. I could not say if they can be integrated directly.
3. Modifying the PHY part is enough for that layer of the stack.

Best regards,
Omar

Re: Cannot initialize PHY. , error in lwip

sajithdevidas — Fri, 05 Jul 2024 06:25:25 GMT

Hi,

Actually, I'm asking about the file "fsl_phy_h." Is this file related to the KSZ8081 or the RT1170 controller? Are any modifications needed in this file if we change our Ethernet module?

Thank you,

@Omar_Anguiano

Re: Cannot initialize PHY. , error in lwip

Omar_Anguiano — Sat, 06 Jul 2024 00:01:17 GMT

The fsl_phy is related to RT1170 PHY controller. Ideally it should not be modified but it will depend on the your phy requirements.

Best regards,
Omar