Accessing SRAM from Linux on T-Series Processors

[EmbEng]

We are going to attach an SRAM on the IFC interface of T1042 processor. I want to know how can we configure IFC in u-boot to support SRAM in addition to other NOR flashes already present on difference chip selects of IFC controller.

In addition to that, how can I access the SRAM afterwards in Linux? Is there any existing generic driver for SRAMs, do I need to write my own driver or can I access the memory mapped SRAM from /dev/mem in userspace? Which one of the mentioned three options is feasible?

[Pavel]

Look at attached file it is .dts file for the T1042d4rdb board.

Find the localbus alias in this file.

See the AN5125 about changing the "ranges":

https://www.nxp.com/docs/en/application-note/AN5125.pdf

Have a great day,
Pavel Chubakov

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