RTOS/AM5728: GPMC access from IPU

jianbingChen

Part Number: AM5728

Tool/software: TI-RTOS

hello, i want to use the cortex-M4 of the AM5728 to access the gpmc interface,is there any demo can be referenced?thank you.

over 7 years ago

0 Biser Gatchev-XID over 7 years ago

TI__Guru**** 393215 points

The RTOS team have been notified. They will respond here.

0 Garrett Ding over 7 years ago in reply to Biser Gatchev-XID

TI__Mastermind 43296 points

Hi Jianbing,

We don't have any (ARM/IPU) GPMC example in AM572x Processor SDK today. You may refer to GPMC driver/example in AM335x PDK (packages\ti\drv\gpmc) or K2G PDK (packages\ti\board\diag\nand\src\).

Regards,
Garrett

0 jianbingChen over 7 years ago in reply to Garrett Ding

Intellectual 360 points

hello,if I want to use (ARM/IPU) to access the gpmc,what should I do?

0 jianbingChen over 7 years ago

Intellectual 360 points

Part Number: AM5728

Tool/software: TI-RTOS

hello, base on linux-4.4.19,I want to use the IPU1 of the AM5728 to access the GPMC,it's my operation:
I configurate the base address 0x01000000 on device tree file,the code snippet is:
ranges = <0 0 0x01000000 0x01000000>; /* CSn0 0, addr 0x01000000, size 0x1000000 */

after this configuation, the IPU1 can not aceess the 0x01000000 successfully. please tell me that which base address I neet to configurate, thank you!

0 Rex Chang over 7 years ago in reply to jianbingChen

TI__Guru 50170 points

Hi, Jianbing,

Could you show more lines where you changed in the dts file? From that single line, I have no clue which entry your change is in.

Rex

0 Rex Chang over 7 years ago in reply to Rex Chang

TI__Guru 50170 points

Hi, Jianbing,

There isn't any example in IPU accessing GPMC, but there was a similar application in DSP. Please refer to the thread discussion on changes in RTOS code for the GPMC access, e2e.ti.com/.../2668990

It doesn't seem any changes are needed, but RTOS configuration.

There are IPU exmaples under RTOS SDK/ipc_x_xx_xx_xx/examples/DRA7xx_linux_elf directory. Each example has IPU code which you can refer to. You will need to modify resource table as Sahin suggested in the thread and map the GPMC memory in IPU code.

Hope this answers your question.

Rex

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RTOS/AM5728: GPMC access from IPU