How to change the QSPI NOR size

[erickang]

Dear All,

I want to know how to change the QSPI NOR Size.

Our development environment is like as below,

- Device/Board : i.MX6SX-SabreSD

- OS : Linux 3.10.53

- Nor Device : Micron N25Q512A13GF840F

Actually, default NOR in i.MX6SX-SabreSD is Micron N25Q256A13EF840,

the N25Q256A13EF840 is pin-to-pin with N25Q512A13GF840F.
We have to change the Size because of RootFS size.

Best Regards,

Eric.

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[igorpadykov]

Hi Eric

one can change qspi size in configuration parameters, please check

IMX6SXRM Table 8-27 QuadSPI Configuration Parameters

also one can look at

Linux/Documentation/devicetree/bindings/mtd/partition.txt - Linux Cross Reference - Free Electrons

Best regards

igor

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[erickang]

Hi Igor,

Thanks for your response.

I checked the "Serial Flash A1 size" in "Table 8-27. QuadSPI Configuration Parameters".

I think I will apply the changed Serial Flash Size if I apply the below 2 items.

Is this right?

1) Modify Serial Flash Configuration File

    - change qspi-nor-micron-n25q256a-config to qspi-nor-micron-n25q512a-config

    - modified contents

      . 4000000  /*sflash_A1_size=size in byte(hex) : 64MB = 512Mb = 0x0400.0000 */

      . 0   /*sflash_A2_size=size in byte(hex)*/

      . 4000000  /*sflash_B1_size=size in byte(hex) : 64MB = 512Mb = 0x0400.0000 */

      . 0   /*sflash_B2_size=size in byte(hex)*/

    - change cfg.ini in MFGTool

      . [variable]

        norconfig=qspi-nor-micron-n25q512a-config

2) Change Partition

    - change Partition in Linux boot command line or u-boot environment like as below,

       mtdparts=21e4000.qspi:1m(uboot),8m(kernel),1m(dtb),-(user)

Best Regards,

Eric.