Is there any QSPI flash other than MX25R64 that can be supported by NRF52840?

Yes, but you need to modify the device tree file of your board and nrf_qspi_nor.c according to the datasheet of your QSPI flash.

Hi 

We don't have a list of supported devices unfortunately, but other devices should be supported as long as they support the NOR instruction set (we don't support NAND devices, only NOR). 

Best regards
Torbjørn

Hello,

What do I need to modify in the nrf_qspi_nor.c if you are using a different QSPI Flash?

Thanks,

oli

Hi Oli,

1, Add a new jesd216_dw15_qer_type and change .dts files accordingly.

2, Modify nrf_qspi_nor.c and use the jesd216_dw15_qer_type value to separate differences between DK's MX flash with the flash driver you are using, in my case, QE bit and BP4 bit and 2 more status registers are different.