Change max packet size in imx_uart conf file if using a different UART chip?

Hallo.

Suppose I have to switch from FTDI UART chip which can definitely cope with 1024 Bytes of max packet size
(see vybrid_usb_work.conf) to PrimeCell UART with TR/RX FIFOs of 32 bytes.

Shall I change then max packet size in the conf file to 32?

Thanks in advance.

Hi @sirop

Could you provide the version of the hardware (including carrier board) and software of your module?

Suppose I have to switch from FTDI UART chip which can definitely cope with 1024 Bytes of max packet size (see vybrid_usb_work.conf) to PrimeCell UART with TR/RX FIFOs of 32 bytes.

Why do you need to switch? What is the purpose of this Prime Cell UART chip?

Shall I change then max packet size in the conf file to 32?

Why do you want to do that? Did you see any issues till now?

Best regards,
Jaski

Hello, Jaski.

This is a self made board. Part of it has been already tested on a amd64 machine.
Now we want to make the already tested part work also on aarch64.
The Prime Cell UART chip is the UART chip which governs UART on our aarch64 board.

     >Shall I change then max packet size in the conf file to 32?

Why do you want to do that? Did you see any issues till now?

I am at the beginning of my investigation and just want to exclude any possible errors.

Hi Sirop

Thanks for your Input.

I am at the beginning of my investigation and just want to exclude any possible errors.

Ok, yeah. Go ahead and please share your results.

Best regards,
Jaski