topic Re: IMX8QM virtual resource for FlexSPI in i.MX Processors

IMX8QM virtual resource for FlexSPI

terbshaeuser — Tue, 29 Sep 2020 13:54:14 GMT

Hello everyone,

we are trying to use the FlexSPI resource from the SCFW boot partition (in u-boot) as well as from the M4 core 0 (FreeRTOS).

After searching a little bit, I found this article: https://community.nxp.com/t5/i-MX-Processors-Knowledge-Base/System-Controller-Firmware-101-Resource-management-service/ta-p/1123227
There you write, that resources can be shared through a virtual resource. However, I failed to find any example code how to archive this. I couldn't even find the referenced VIRT_I2C example in the Linux BSP.

Can you provide a link to a documentation or an example code snippet? Or maybe some other clue how we can archive our use case?

Re: IMX8QM virtual resource for FlexSPI

nxf54947 — Wed, 07 Oct 2020 18:17:22 GMT

Hi @terbshaeuser,

Please find VIRT_I2C example at Code Aurora (this example is for L4.1498, but you can switch to another branch if needed). Also, you may also find relevant ecSPI examples within the Cortex M4 SDK for the i.MX 8QM MEK; please download SDK at: SDK Builder.

Just in case that you need to review more SCFW documentation you may want to get it from our SCFW porting kit. Our website, Linux Releases, allows you to download the specific SCFW porting kit for each BSP release.

Hope this helps!

Ruben

Re: IMX8QM virtual resource for FlexSPI

terbshaeuser — Thu, 08 Oct 2020 06:31:51 GMT

Thank you! We'll have a look into it.