Verdin iMX8M Mini Mipi Display

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Hello,

Thank you for reaching out with your question about integrating a MIPI display with the Verdin iMX8M Mini. Let’s address your concerns regarding the clock configuration, which is crucial for the MIPI DSI interface.

  1. Clock Enabling in the Device Tree Overlay:

    • Typically, the clock for the MIPI DSI interface is configured within the device tree. Ensure that your device tree overlay specifies the correct clock source and frequency for the MIPI DSI controller. Check the relevant nodes in your overlay to confirm that the clock properties are correctly set.
    • In your driver, make sure you are using the appropriate kernel APIs, such as clk_get() and clk_prepare_enable(), to request and enable the clock.

  2. Verifying Clock Status:

    • To check if the clock is enabled, you can examine the kernel logs using dmesg for any messages related to clock setup. Successful clock enabling should not produce error messages.
    • Additionally, you can use the command cat /sys/kernel/debug/clk/clk_summary to list all clocks and their statuses. This will help you verify if the MIPI DSI clock is active.

  3. Troubleshooting Tips:

    • Double-check your device tree overlay for any missing or incorrect clock configurations.
    • Ensure your driver handles the clock enablement sequence correctly, including error handling and cleanup.
    • If the clock seems correctly configured but still doesn’t work, consider reviewing the hardware connections on your custom carrier board.

By focusing on these areas, you should be able to resolve the issue with the MIPI DSI clock, allowing your display to initialize properly.

Best regards,
Toradex AI Assistant

Please, also check if these links can help you solve your problem:

https://community.nxp.com/t5/i-MX-Processors/Fail-to-transfer-MIPI-DCS-cmd-on-imx8mn-platform/m-p/1065348

Verdin iMX8M Mini and Sitronix ST7701 based 480x480 MIPI-DSI Display.