Thank you for your response.
I have attached the OCTOSPI1 configuration screenshots and related settings.
Currently, I am not able to MT25QL128A external flash memory, so TouchGFX assets are also not working from external flash.
I will also check AN5050 section 7 as suggested.
void OCTOSPIM_Enable_IO7_4_Remap(void)
{
uint32_t reg = OCTOSPIM->PCR[0]; // Port 1
reg &= ~(IOHSRC_Msk | IOLSRC_Msk | IOHEN_Msk | IOLEN_Msk);
/* Low IO[3:0] → OCTOSPI1 (instruction + address) */
reg |= (0x1UL << IOLSRC_Pos); // OCTOSPI1_IO[3:0]
reg |= IOLEN_Msk;
/* High IO[7:4] → OCTOSPI1 (quad data) */
reg |= (0x1UL << IOHSRC_Pos); // OCTOSPI1_IO[7:4]
reg |= IOHEN_Msk;
OCTOSPIM->PCR[0] = reg;
}
