How to modify the clock frequency of SPI?

Robotics & Edge Computing Jetson Systems Jetson Orin Nano
1

Hello, teacher:
The core board I am using is Orin nano 4gb (JetPack5.1.5). Under the guidance of my teacher (KevinFFF), I completed the SPI loop test.
Now I need to communicate with SPI and MCU, but I don’t know how to change the SPI clock frequency of the core board. I want to change the SPI clock frequency to 1.5 MHZ. I hope the teacher can help me further. Thank you very much.

2

@KevinFFF

5

Hi 403199668,

Please share the full device tree and the result of the following commands on your board for further check.

$ cat /etc/nv_tegra_release
$ cat /etc/nv_boot_control.conf
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图片
图片1883×423 21.2 KB

Please help me, teacher. If it’s particularly complex, just providing me with a general approach would be appreciated.

7

It would be great if you could provide me with some routines, similar to those for GPIO.

8

Please also provide the full device tree for further check.
There should be the related configuration in device tree.

9

Sorry. I didn’t reply to your message last week because I was on leave.
I am sending you the device tree now, and I hope you can continue to guide me.

dmesg.zip (129.9 KB)