Is there a Linux driver for "soft" coreSPI?

[rary21]

Hi, I'd like to add a coreSPI module in fabric.

SPI module in MSS uses spi-microchip-core.c .
However, this driver seems incompatible with coreSPI found below
because INT_CLEAR register offset is different.
https://www.microsemi.com/document-portal/doc_view/1245299-corespi-hb
The commit message of spi-microchip-core.c says that it is for "hard" controller
so I guess there is no driver availble for coreSPI in fabric.

Is my understanding correct?

[eppidei]

Hi @rary21 you are correct. It will be available in next releases but I cannot give you a timeline at the moment.

[rary21]

Thank you! I got it.

[RossWilliamson]

Following as I also would like a driver for the soft coreSPI

[rockoguido]

hello for driver for devices in the fabric see
https://github.com/Mi-V-Soft-RISC-V/miv-rv32-bare-metal-examples/tree/main/driver-examples/
amongst those you will find a corespi driver that uses the spi from the ESS.
These examples target a few of our boards, in particular our Eval board based on the 300T

[RossWilliamson]

Thanks - I think we are both looking for a linux kernel driver to expose it as a spidev device via device-tree