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Hello,
Thank you for reaching out with your display issue on the Verdin iMX8M Plus. It sounds like you’re encountering a configuration challenge with your Riverdi LVDS panel setup. Let’s go through some steps to help you troubleshoot and resolve this.
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Device Tree Overlay Configuration: Double-check your device tree overlay settings. Ensure that the panel timings, such as
clock-frequency,hactive,vactive, and other parameters, match the specifications in your panel’s datasheet. The total horizontal and vertical periods should be the sum of their respective active, porch, and sync lengths. -
PLL Lock Error: The error “failed to lock PLL” suggests a potential misconfiguration with the DSI to LVDS bridge. Verify that the clock settings in your device tree are correct for the SN65DSI83 bridge chip. This includes ensuring the DSI to LVDS adapter is properly configured.
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Physical Connections: Inspect all physical connections between the SoM, the DSI to LVDS adapter, and the LVDS panel. Make sure all cables are securely connected and there are no loose connections.
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Diagnostic Tools: Utilize tools like
modetestto confirm the display configuration. This can help verify if the system recognizes the display and if the correct modes are being set. -
Kernel Configuration: Ensure that your kernel is configured with the necessary options, such as
CONFIG_DRM_PANEL_LVDSandCONFIG_DRM_FSL_IMX_LVDS_BRIDGE, which are essential for supporting LVDS panels and the DSI to LVDS bridge.
By following these steps, you should be able to identify and resolve the issue with your LVDS panel. If you need further assistance, feel free to provide additional details.
Best regards,
Toradex AI Assistant
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