topic Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto? in S32G

Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

jun13_chen — Mon, 07 Aug 2023 09:03:41 GMT

Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

Daniel-Aguirre — Mon, 07 Aug 2023 17:49:32 GMT

Hi,

As for eDMA, the following is shown under the S32G2 Reference Manual [Page 123, S32G2 Reference Manual, Rev. 7, February 2023]:

As for information, we recommend looking chapter 38.7.4 DMA Usage under the S32G2 Reference Manual.

Please, let us know.

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

jun13_chen — Tue, 08 Aug 2023 08:00:41 GMT

I look the code: https://github.com/nxp-auto-linux/linux/blob/release/bsp37.0-5.15.96-rt/drivers/spi/spi-fsl-qspi.c, there is nothing about DMA.I want to use the qspi with DMA.When do you plan to support DMA's qspi? Please let me known.Thanks very much!

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

Daniel-Aguirre — Wed, 09 Aug 2023 15:30:26 GMT

Hi,

As for Linux, we don't seem to see any support on this regard. As for the plan to implement it, we are not seeing anything, we do apologize.

We will verify if there is anything that we might be missing.

Please, let us know.

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

jun13_chen — Thu, 10 Aug 2023 01:07:36 GMT

you say as for linux? anyway you mean some other os or rtos support QSPI with DMA？Could you tell me where i can see the code for qspi with dma？If you can provide the URL of source code is very nice.Thanks very much.

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

Daniel-Aguirre — Thu, 10 Aug 2023 15:25:49 GMT

Hi,

We said "As for Linux" since you were looking into the source code. We understand that there is no available example that enables QSPI+DMA at this moment under S32G.

Still, we are looking for confirmation on this regard.

Please, let us know.

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

Daniel-Aguirre — Fri, 11 Aug 2023 18:24:27 GMT

Hi,

We have received the following update from the internal team:

"There are several DMA request for QSPI"

How are you planning on use QSPI+DMA?

Please, let us know.

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

jun13_chen — Mon, 14 Aug 2023 01:14:35 GMT

we want to read and write nor flash in A core, and with qspi+dma we think it's performance will be better and with lower cpu time costs.

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

Daniel-Aguirre — Mon, 14 Aug 2023 18:42:07 GMT

Hi,

Thanks for your feedback.

Let us confirm what it is available at this moment, if any.

Please, let us know.

Re: Dose qspi support edma usage in s32g2 or s32g3 soc, if yes then howto?

Daniel-Aguirre — Wed, 16 Aug 2023 22:59:10 GMT

Hi,

We have received the following comments:

"Sorry, as far as I know, the BSP team didn't have plan to support QSPI+eDMA.

Also, the released RTD QSPI driver doesn't use DMA, and there is no plan to support this feature. But from my perspective, the customer could refer to the Integration_Reference_Example(bootloader demo), which used to DMA + AHB read combination."

Please, let us know.