NRF54L15 with 3 shared spi devices, not working

NRF54L15 with 3 shared spi devices, not working.

I have a custom NRF54L15 based board with 3 spi devices, all sharing the same SCK / MISO / MOSI lines.

SCK = P2.06
MISO = P2.09
MOSI = P2.08

The 3 devices have different CS pins:

P2.10 -> device 1
P2.05 -> device 2
P2.02 -> device 3

Currently I am only able to communicate with device 1. Is this configuration allowed / possible on the NRF54L15, or do I have to use 3 separate SCK / MISO / MOSI lines for each device?

I have made sure to disable spi00 and spi20 and uart20 within the overlay file.

Related