39.5.2 Power Management
The pixel clock is not continuously provided to the LVDSC. Before using the LVDSC, the programmer must first enable the LVDS-dedicated PLL and the LCDC peripheral clock in the Power Management Controller (PMC). Then the LCDC must be configured to generate the pixel clock.
Once the LVDS PLL is enabled, the pixel clock is used as the clock for LCDC, so its GCLK is no longer needed.