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To configure the GPIO pull-up settings on your iMX8M Plus board, you indeed need to customize the device tree, as libgpiod cannot set pull-up configurations for inputs. Here’s a step-by-step guide based on the context provided:
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Create a Device Tree Source (DTS) File: You need to create or modify a DTS file to specify the pull-up configuration for the GPIO lines. The GPIO lines you are interested in are GPIO_1, GPIO_2, GPIO_3, and GPIO_4, which correspond to gpiochip0 pins 1, 2, 5, and 6 respectively.
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Example Configuration: You will need to define these GPIO pins in the DTS file and set the appropriate properties to enable pull-up resistors. The specific syntax for enabling pull-ups can typically be found in the documentation for the iMX8M Plus or similar boards. Unfortunately, the context does not provide the exact syntax, so you may need to refer to the official documentation or existing DTS files for examples.
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Compile the DTS File: Once you have your DTS file ready, compile it into a Device Tree Blob (DTB) file using the device tree compiler (DTC).
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Integrate with Torizon: Use
torizoncode-builderto integrate the new DTB into your Torizon image. Modify thetcbuild.ymlfile to include the path to your new DTB file so that it is included in the final image used for your board. -
Finding Example DTS Files: If you cannot find the original DTS files in the
/arch/arm/boot/dtsdirectory, you might need to check the Torizon or Yocto Project repositories for example DTS files. These repositories often contain board-specific configurations that can serve as a reference. -
Resources: Utilize the official documentation for the iMX8M Plus board and community forums for additional guidance and examples from other users who have configured similar setups.
If you need further assistance with specific DTS file configurations or examples, you may need to reach out to community forums or support channels for more detailed guidance.
Please, also check if these links can help you solve your problem: