How to enable x4 mode QSPI on Arria10 with Micron memory flash on Uboot 2020.04, Altera 20.1

[Yoels]

Hello, I'm working on a custom board with a Socfpga Altera Arria10 on it with a Micron Serial Nor Flash memory MT25QU01GBBB.

Currently, the Uboot 2020.04 I'm using works with one lane of QSPI data transfer with the Micron memory unit; how can I make it work with four lanes?

I can't find how I can configure it to work this way in the device tree. Also, in the Cadence Qspi driver, I can't find how to change the number of lanes to work with.

I'm working in Altera Environment 20.1.

Any help applaying this change would help.

Thanks in advance, Yoel

[aikeu]

Hi Yoels,

Do consider using the latest Uboot for your Arria10 development. Referring to the get Uboot section:

https://www.rocketboards.org/foswiki/Documentation/BuildingBootloaderCycloneVAndArria10

Can search the related device tree enablement in the uboot source code, example socfpga_arria10 related:

https://github.com/altera-opensource/u-boot-socfpga/blob/socfpga_v2023.10/arch/arm/dts/socfpga_arria10_socdk.dtsi

You can check with Micron on how their particular device to be enabled as they have tested it for working:

https://www.mouser.com/pdfdocs/Micron_Support_Intel_FPGA.pdf

Thanks.

Regards,

Aik Eu

[aikeu]

Hi Yoels,

I will close the thread if no further feedback from your side.

Thanks.

Regards,

Aik Eu