AM335x GPMC configuration in linux SDK

xiangzhen meng

I am using am335x with linux. the SDK is ti-sdk-am335x-evm-05.05.00. I use the am335x to communicte with one nand and the FPGA. when I use the gpmc port to communicate with FPGA. I read the register of GPMC_CONFIG7_0-GPMC_CONIFG7_6. I find the base address is 0x8000000,0x1000000,0x2000000,0x3000000,0x4000000,0x5000000,0x6000000 and the maskaddress is 16M.

the question is I do not configure the register of GPMC_CONFIG7_i.

if I want to configure the register, how to configure them is the SDK of ti-sdk-am335x-evm-05.05.00.

thank you!

over 12 years ago

0 Biser Gatchev-XID over 12 years ago

TI__Guru**** 393215 points

The SDK you use is quite old. You can find the latest SDK here: http://software-dl.ti.com/sitara_linux/esd/AM335xSDK/latest/index_FDS.html.

GPMC_CONFIG7 register description can be found in the AM335X Technical Reference Manual Rev. J, section 7.1.6.17. This document can be downloaded here: http://www.ti.com/lit/ug/spruh73j/spruh73j.pdf.

0 xiangzhen meng over 12 years ago

Prodigy 230 points

I am using the am335x to communicate with FPGA. and it successfully to communicate with FPGA. but the question is that the base address and the maskaddress I do not know where to confiure them. I know that base address and the maskaddress is confiured in GPMC_CONFIG1_7(cs = 1). but i don't know where to modify in the linux. the default base address and maskaddress is 0x1000000 and 16M.

Can you tell me where to modify the baseaddress and maskaddress in the linux.

thank you

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AM335x GPMC configuration in linux SDK