Cut and paste this URL to share the unmodified register and value:
https://regviz.com/r/stm32/stm32f7/STM32F746/LTDC/ICR#0x0
Interrupt Clear Register
Clears the Line Interrupt Flag
Clears the FIFO Underrun Interrupt flag
Clears the Transfer Error Interrupt Flag
Clears Register Reload Interrupt Flag
https://github.com/modm-io/cmsis-svd-stm32