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Based on the context provided, it seems you are trying to use a 7" capacitive touch display with a Colibri iMX6DL and an Iris V2 board. According to the compatibility information, the Iris V2 board should be directly compatible with the capacitive touch display without needing an adapter.
However, you are encountering an issue with the I2C communication, specifically an “Info checksum error” when trying to load the configuration file using mxt-app. This error suggests that there might be a problem with the data being read from the device, which could be due to several reasons:
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Wiring Issues: Double-check the wiring between the display and the Iris V2 board to ensure all connections are secure and correct.
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Configuration File: Ensure that the configuration file
LTCTP070-3-GG_mXT1066T2_tdx_20170911.xcfgis the correct one for your display and is not corrupted. -
I2C Address: Verify that the I2C address (0x4a) is correct for your setup. You can use tools like
i2cdetectto scan the I2C bus and confirm the address. -
Driver and Kernel Support: Make sure that the necessary drivers are loaded and that your Linux kernel supports the touch controller.
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Hardware Adapter: Although the Iris V2 is supposed to be directly compatible, if you are using any additional hardware adapters, ensure they are functioning correctly.
If these steps do not resolve the issue, I recommend reaching out to Toradex technical support for further assistance, as they can provide more detailed troubleshooting based on your specific setup.
Please, also check if these links can help you solve your problem:
First Steps with Capacitive Touch Display 7" Parallel | Toradex Developer Center.