Hello, I am trying to configure the SPI0 interface as a slave in the Jetson Xavier NX (custom board, but it uses the exact same pinning on that interface as the devkit). Having a look at the documentation I followed the next steps: In the device tree, I changed it so it uses the driver tegra124-…

Hello everybody, Just for anybody out there having issues, here are the steps to follow: look for the corresponding node in the device tree (for jetson xavier NX is spi@3210000, in the file tegra194-soc-spi.dtsi). The only thing you need to change there, instead of the “nvidia, tegra186-spi” whe…

Hi borjabasket14, What’s your Jetpack version in use? To enable SPI slave mode, you could refer to the following topic for Xavier NX. How to set to spi slave mode - Jetson & Embedded Systems / Jetson Xavier NX - NVIDIA Developer Forums You could use devmem command to check current value of pinmu…

Hello, Thanks. I have followed the steps from that link, and it helped, but I still cannot get it to run. A question: What should be the correct pinmux settings for that interface as a slave? I have configured that pinmux with the jetson-io.py utility, but after checing that link that you posted,…

What’s your Jetpack version in use? Could you help to provide current device tree and pinmux for further check?

Hi, Release used is 32.6.1, with jetpack 4.9. Device tree settings are as follow: First, I attach the changes made by the jetson-io.py (refer to my first post to check the full steps I followed to configure the interface) pinmux@2430000 { pinctrl-0 = <0x17f>; pinctrl-names = "default"; co…

[image] borjabasket14: Release used is 32.6.1, with jetpack 4.9. If you are using R32.6.1 , it should be Jetpack4.6. Have you verified SPI1 could work as expected with loopback test?

Hi, Yes sorry, it was a typo. And no, I have not verified it with the loopback test. I will try that now. Any particular settings that I should apply to the pinmux and/or device tree? Or the same settings I am having should be sufficient?

SPI0 interface configured as a slave in Jetson Xavier NX

Robotics & Edge Computing Jetson Systems Jetson Xavier NX

KevinFFF May 11, 2023, 6:24am 9

You could refer to the following thread to do loopback test step-by-step.
Jetson Nano SPI Bus Not Working - #10 by KevinFFF
The thread is for Jetson Nano, but it should be the similar steps for Jetson Xavier NX.

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SPI0 interface configured as a slave in Jetson Xavier NX

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