OMAPL138 SPI-MTD problem

Risto Hedman

Other Parts Discussed in Thread: OMAPL138

Hello,

I'm tailoring kernel to a custom OMAPL138 board whic is a mixture of LCDK and LogicPD' SOM. External flash is connected to SPI1 and is of type M25P64.

While booting m25p80 is detected and in also in /dev folder, as can be seen in attached screenshots.

When I try to make partitions and press "write" in fdisk, kernel is crashing

I'm using mcsdk_1_01_00_02 linux-3.3-psp03.22.00.06.sdk and running it with NFS now. Kernel code is based on "board-da-evm.c" with modifications to da850.c .

Could someone please assist me a bit with this issue.

risto

5226.SPI-MTD problem.doc

over 8 years ago

0 Titusrathinaraj Stalin over 8 years ago

TI__Guru** 116100 points

Hi,

When I try to make partitions and press "write" in fdisk, kernel is crashing

In general, we would create partitions in board file itself and then we access through "mtsudtils"

Could you try the following commands in partitions.

root@omapl138-evm:/# flash_eraseall /dev/mtd6
Erasing 64 Kibyte @ 180000 -- 100 % complete.
root@omapl138-evm:/# echo "Texas Instruments" > /dev/mtd6
root@omapl138-evm:/# strings /dev/mtd6
Texas Instruments

0 Risto Hedman over 8 years ago in reply to Titusrathinaraj Stalin

Expert 1760 points

Hi Titus,

Thank you. The main problem was DMA- transfer in SPI, when I switched it to INT, the MTD operations you recommended worked fine. At the moment I don't have time to research the DMA- problem, I'm happy with INT because MTD operations are not time critical: I can now update uImage located in MTD and that is enough.

Risto

0 Titusrathinaraj Stalin over 8 years ago in reply to Risto Hedman

TI__Guru** 116100 points

Thanks for your update.

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OMAPL138 SPI-MTD problem