Sharing the same SPI between two devices.

[Patryk]

Hi, I want to have two devices on the same SPI bus.

These devices are:

- SPI nor flash (QSPI compatible)

- my custom device (SPI compatible).

For SPI NOR flash I have the driver in the kernel, for my custom device I
do not have such a driver.

My question is - how the access to this particular SPI peripheral can be
serialized between these two drivers in order to prevent simultaneous
access that would result in a mess on the SPI? Do I have to modify the
existing driver for SPI NOR flash or not?

How about different configurations for these devices - as I mentioned one
is QSPI compatible whereas the other one is SPI compatible. Can I
reconfigure the SPI bus driver before each "transaction"?


Best regards

Patryk
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.kernelnewbies.org/pipermail/kernelnewbies/attachments/20231102/580f39dc/attachment.html>