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Original question:

SK-AM62: GPIO control for reset for booting device of QSPI and eMMC card

TMDS62LEVM: (NO RTOS) eMMC reset using GPIO_EMMC_RSTn

Dazong Chen
Intellectual 400 points
Part Number: TMDS62LEVM

Tool/software:

Hi,

We want to know if there is a function in bare metal world that uses GPIO pin to reset eMMC

In e2e.ti.com/.../sk-am62-gpio-control-for-reset-for-booting-device-of-qspi-and-emmc-card

Ti mentions "they can also be reset using the corresponding GPIO pin in software when needed. The Linux eMMC and QSPI drivers already implemented such reset logic using a GPIO pin."

Wondering if something similar is in RTOS SDK so I've went through eMMC driver in RTOS SDK but don't find such functionality. Is it in another file? If not in SDK, is there a specific procedure need to follow when use GPIO to toggle the emmc reset pin?

Thanks,

Dazong

  • 0
    TI__Guru 70681 points

    Hello,

    Dazong Chen said:
    Wondering if something similar is in RTOS SDK so I've went through eMMC driver in RTOS SDK but don't find such functionality.

    Indeed, there is no such functionality implemented in the SDK. If really required, all that is needed is the GPIO pin toggling from a software perspective.

    Regards,

    Prashant