SPI issue on IMX8M

Mehtabazam — Thu, 06 Jun 2024 10:13:19 GMT

I’m facing a problem with SPI communication on an IMX8M. When running the spidev_test command, it doesn’t receive any data (RX). The SPI mode, bits per word, and speed are configured correctly. Here is the output:
root@imx8mminvsom:~# spidev_test -D /dev/spidev1.0 -v
spi mode: 0x0
bits per word: 8
max speed: 500000 Hz (500 kHz)
TX | FF FF FF FF FF FF 40 00 00 00 00 95 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF F0 0D |…@…|
RX | FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF |…|

Even when nothing is connected on ixm8m it receives RX | FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF.

Re: SPI issue on IMX8M

Zhiming_Liu — Tue, 18 Jun 2024 05:59:21 GMT

Hi @Mehtabazam

Can't reproduce same issue on EVK.

spi mode: 0x0 bits per word: 8 max speed: 500000 Hz (500 kHz) TX | FF FF FF FF FF FF 40 00 00 00 00 95 FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF F0 0D |......@.........................| RX | 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 |................................|

topic SPI issue on IMX8M in MQX Software Solutions

SPI issue on IMX8M

Re: SPI issue on IMX8M