Connection establishment from laptop to controller is not happeing (verified with ping)

Manu kumar

Hi All,

I have used latest SDK(8.2.0.24) with kernel version 5.10.100 in this we are not able to ping from laptop to controller..

my architecture is laptop --> controller

Task is to port from 4.9.59 kernel(sustom kernel) to 5.10.100

I am able to make the kernel up.. and we have used the KSZ8863 ethernet switch and can able to load the module.. while booting

1 issue i am facing is i am not able to ping from laptop to controller(custom controller which is based on am335x.

Note: i have modified dts (am335x-evmsk.dts) i.e as below (5.10.100 kernel version)

&phy_gmii_sel {
rmii-clock-ext;
};

initialy it was because we wer using 4.9.59 kernel

&phy_sel {

rmii-clock-ext;
};

will it be a problem while establishing connection? via ping?

am i missing any additional configurations..?

i debuged by wireshark and arp tool observed the arp is not able to reslove the ip.. may i know how resolve this..

Also 1 fundemnetal question: may i know who will be assigning ip for the controller?

please provide info at earliest..

Thank you

over 2 years ago

0 Nick Saulnier over 2 years ago

TI__Guru** 101250 points

Hello Manu,

1) It sounds like you are using an existing custom AM335x board and software, and porting it to a later version of Linux. Is that correct?

2) Has the hardware design already been validated as working on Linux kernel 4.9?

3) Are you using CPSW Ethernet, or PRU Ethernet?

4) I do not understand what you mean by "who will be assigning ip for the controller". Do you mean the IP address? That depends on your design (e.g., are you connecting to an existing DHCP network and receiving your IP address from the network? Do you need to assign a static IP address? etc).

Regards,

Nick

0 Manu kumar over 2 years ago in reply to Nick Saulnier

Intellectual 510 points

1) It sounds like you are using an existing custom AM335x board and software, and porting it to a later version of Linux. Is that correct?

Yes

2) Has the hardware design already been validated as working on Linux kernel 4.9?

yes it working

3) Are you using CPSW Ethernet, or PRU Ethernet?

CPSW ethernet

For this we are not making use of DHCP insted we are connecting directly from laptop to custom am335x board and we assign static ip and both are in same subnet..

i have raised 1 more ticket with more information you can relate to that and please provide.. info as below

dts file phy_sel not found in 8.2.0.24 - Arm-based microcontrollers forum - Arm-based microcontrollers - TI E2E support forums

0 Nick Saulnier over 2 years ago in reply to Manu kumar

TI__Guru** 101250 points

Hello Manu,

Here is a post where we discuss how to set a static IP address on a board. Attaching in case it is helpful:

https://e2e.ti.com/support/processors/f/791/t/954816
https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1027383/am6442-am64x-and-am65x-eth0-doesn-t-come-up-at-boot-with-static-ip/3802949#3802949

I am reassigning your thread to Schuyler for any followup questions.

Regards,

Nick