AM3352 GPMC CS base address question

Sean Sean

Prodigy 50 points

I saw there are two ways to get the base phy address of the selected GPMC CS, but I am not sure which one is correct.

1. gpmc_cs_request will return the phy base for the selected cs.

2. Also GPMC_CONFIG7_1 bit 5 to 0 is for the base address of selected cs.

Are these address different? which one should I use?

Thanks!

over 10 years ago

0 Biser Gatchev-XID over 10 years ago

TI__Guru**** 393215 points

Hi,

You should use the base address you configured in GPMC_CONFIG7.

0 Sean Sean over 10 years ago in reply to Biser Gatchev-XID

Prodigy 50 points

Thanks Biser. When should I use gpmc_cs_request and what is the diference?

0 Biser Gatchev-XID over 10 years ago in reply to Sean Sean

TI__Guru**** 393215 points

I'm not a SW expert myself, but I have asked the SW team to reply to this.

0 Kemal R. Shakir over 10 years ago in reply to Biser Gatchev-XID

TI__Guru 55345 points

Hello Sean,

gpmc_cs_request is a function which relies on GPMC_CONFIG7 register. It is defined in arch/arm/mach-omap2/gpmc.c and does various checks before getting the base phy address.

Best regards,
Kemal

0 Sean Sean over 10 years ago in reply to Kemal R. Shakir

Prodigy 50 points

Thanks Kemal.

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AM3352 GPMC CS base address question