SPI configuration as a slave on Colibri-IMX6ULL 512MB IT

Technical Support
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1

Hi Toradex,

please help me to configure SPI as a slave on Colibri-IMX6ULL.
and i am using -

  1. Colibri-IMX6ULL 512MB IT
  2. iris-v2-carrier board
  3. linux platform

Thanks & regards,
Manohara

2

Hi, I’m the Toradex AI Assistant. I’m in early beta, and I would appreciate your feedback.
The Toradex Support team will follow up with you shortly!

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:+1: :-1:

:handshake: Hi Manohara,

Configuring the SPI interface as a slave on the Colibri iMX6ULL module involves several steps, including modifying the device tree and ensuring the correct kernel configuration. Here’s a step-by-step guide to help you:

  1. Device Tree Modification:

    • You need to modify the device tree to configure the SPI interface as a slave. Locate the device tree source file for your Colibri iMX6ULL module. This is typically found in the arch/arm/boot/dts/ directory of the kernel source.
    • Find the SPI node you want to configure as a slave. It might look something like this:
      &ecspi1 {
    status = "okay";
    spi-slave;
    /* other configurations */
};
    • Add the spi-slave property to the SPI node to configure it as a slave.

  2. Kernel Configuration:

    • Ensure that the SPI slave support is enabled in the kernel configuration. You can do this by running make menuconfig in the kernel source directory and navigating to:
      Device Drivers -> SPI support -> User mode SPI device driver support
    • Enable the necessary options for SPI slave support.

  3. Recompile the Device Tree and Kernel:

    • After making the necessary changes, recompile the device tree and the kernel.
    • Deploy the new device tree blob (DTB) and kernel to your Colibri iMX6ULL module.

  4. Testing:

    • Once the new device tree and kernel are deployed, boot your Colibri iMX6ULL module.
    • Verify that the SPI interface is configured as a slave by checking the device tree at runtime using the dtc tool or by inspecting the /proc/device-tree directory.

  5. User-Space Access:

    • If you need to access the SPI interface from user-space, ensure that the spidev driver is enabled and the corresponding device files (e.g., /dev/spidevX.Y) are available.

Please note that configuring SPI as a slave might require additional considerations depending on your specific use case and the peripheral devices you are interfacing with.

Best regards,
Toradex AI Assistant

3

I can see the below things from a colibri-imx6ull-eval-v3dtsi,

image

please let me know what should i change.

thanks & regards,
Manohara

4

Hi @Manohara,
We have replied to you on your other ticket. Please continue there itself.