AM3356: Configuration of MMC0 pins to GPIO mode

ptm

Intellectual 270 points

Part Number: AM3356

Hi,

I am using AM3356 in my design and SYS booting option is MMC1,MMC0,UART0,USB0.

MMC0 is not used in my design , i want to use it as GPIO.

Can any body tell me how to configure the MMC0 to GPIO

over 6 years ago

0 Pavel Botev over 6 years ago

TI__Guru**** 170625 points

Hi ptm,

From what I understand, you are using AM335x custom board.

Do you need to change the AM335x pinmux from MMC0 to GPIO?

Do you use AM335x TI PSDK Linux? If yes, which version?

Regards,
Pavel

0 ptm over 6 years ago in reply to Pavel Botev

Intellectual 270 points

Hi Pavel,

We are using TI PSDK: PROCESSOR-SDK-LINUX-AM335X 04_02_00_09.

The configuration used for the kernel is tisdk_am335x-evm_defconfig (with some unwanted drivers removed).

0 ptm over 6 years ago in reply to Pavel Botev

Intellectual 270 points

Hi Pavel,

Yes, we need to change MMC0 to GPIO.

0 Pavel Botev over 6 years ago in reply to ptm

TI__Guru**** 170625 points

ptm,

MMC0 pinmux is done in u-boot mux.c file only, please check below e2e thread for details.

e2e.ti.com/.../668324

{PSDK}/board-support/u-boot/board/ti/am335x/mux.c

Regards,
Pavel

0 ptm over 6 years ago in reply to Pavel Botev

Intellectual 270 points

Hi,

Thank you.
We are able to configure the MMC0 pins to GPIOs.

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AM3356: Configuration of MMC0 pins to GPIO mode