NRF7002DK using high speed SPI4

[shenchen]

Hi, I want to achieve high speed data transfer between NRF7002 DK with other development board. Therefore, I want to using SPI4 with 32MHz speed. However, I found out that SPI4 is assigned to external flash chip and it is not connected to onboard pin header. If I want to use SPI4 as SPI1. Do I need to short Solder bridge SB11 - SB14 and then desolder the external flash chip?

[Turbo J]

You can reconfigure SPIM4 pins to other GPIOs with a DTS overlay and it seems to work all the way up to 32MHz if you remembered to configure pins to high drive mode. That way you don't need a soldering iron here.

Note that I have tested the 32MHz only on a finished PCB and not with a DK board and the frequency is high enough to get into possible HF problems with long cables.

Datasheet is a bit unclear if general purpose GPIOs can be used for 32MHz SPI mode.