topic Re: IMX93 RS485 Multidrop support in i.MX Processors

IMX93 RS485 Multidrop support

EmbeddedFox — Thu, 18 Apr 2024 09:09:46 GMT

Hi,

We are using the IMX93 in one of our projects that require RS485 with multidrop.
The IMX93 is placed upon a SOM-module from Variscite, and the kernel is based upon
the kernel from NXP.

Looking at the kernel documentation, it has a disclaimer that not all devices supporting RS485
does support multipoint addressing.
(https://docs.kernel.org/driver-api/serial/serial-rs485.html)

Is there any plan to implement RS485 multipoint addressing in the Kernel

Re: IMX93 RS485 Multidrop support

Rita_Wang — Sun, 28 Apr 2024 09:49:54 GMT

Are you using NXP i.MX93 EVK board or the board you design yourself? Which version BSP are you using?

Re: IMX93 RS485 Multidrop support

EmbeddedFox — Mon, 29 Apr 2024 06:48:31 GMT

We are using a development kit from Variscite at the moment, but are in the progress of designing our own board.
https://www.variscite.com/product/system-on-module-som/cortex-a55/var-som-mx93-nxp-i-mx-93/#evaluation-kit

Also, the Kernel we are using is from Variscite, but as I understand it, it is based upon NXPs BSP.
https://github.com/varigit/linux-imx/tree/lf-6.1.y_var02

Their customer support referred us here.