Questions: MCLK for driving LCD

[pandysong]

I am thinking to use the similar technology to drive the LCD with parallel RGB interfaces. However these LCD modules need additional MCLK. How could stm32 continuously output MCLK (say 25Mhz or 27Mhz). We may use another SPI as a master to output the clock continuously.

However the MCU I have has only one SPI master. I wander if there are alternative ways to generate MCLK.