Hello All,I am very new to this DPRAM , i have requirement of porting the DPRAM on verdin-imx8mp using yocto build, Can anyone provide me the useful information to interface DPRAM in yocto.Thanks in advance.
Even though the SRAM is from Renesas (former IDT) I'm not sure why you are asking here. Didn't you get support from Toradex or NXP?
Taking in account that we do not know how the memory is interfaced to the competitor SoC, from the SW point of view there's not so much to configure, probably just a reserved memory sram node in the device tree, then you should be able to access your memory using /dev/mem.
Hi MicBis ,
Thanks for the reply, Actually we are configuring through the GPIO pins.Can you Please provide me any sample code for the read and write operations?
You will have to seek for help from NXP.
Hi MicBis ,I have raised a query in NXP and toradex Community, but they are telling to request the code from renesas.
Interesting. So NXP and Toradex are saying that Renesas should be providing the code that runs on their devices?
Yes.Just we need to write data to the random location and read from that locations.
Hi MicBis ,YES.we required a code to write the data into different locations and read from that location.
Hi MicBis Yes,
We require a sample code for write a data to the different locations and to read the data from it
1) Renesas do not know anything about the host device
2) Renesas do not know how the memory is hooked
3) Renesas do not know where the memory is mapped
4) Renesas do not know anything about the SW running on the host device
And Renesas is supposed to provide sample code? Could you explain why?
It's a memory: you provide the address and you get / write data into it, the "code" can be as simple as a SINGLE load / store instruction.