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AM4378: Software SD Card or eMMC

Hiroyasu Tazawa1
Guru 12350 points

Part Number: AM4378
Other Parts Discussed in Thread: TPS65218

Hi,

Let me talk about MMC port of AM437x.

MMC port support connection between MMC port and SD Card or eMMC.
We understand AM437x can use same software for SD Card and eMMC.
Is it correct ? ?

Because Compiling MLO and u-boot of this wikipage mention that
some configuration support SD Card Boot but not support eMMC Boot

http://processors.wiki.ti.com/index.php/Linux_Core_U-Boot_User%27s_Guide

For example, AM437x EVM-Sk can support SD Boot but not supprt eMMC Boot using am43xx_evm_defconfig.
Why Configuration for SD Boot is not used eMMC Boot ?

Best Regards
Hiroyasu

  • 0
    TI__Guru**** 161600 points

    Hi,

    For example, AM437x EVM-Sk can support SD Boot but not supprt eMMC Boot using am43xx_evm_defconfig.

    Why Configuration for SD Boot is not used eMMC Boot ?



    According to the product folder (), this device does not have eMMC:
    Features
    Hardware                                            Software      Connectivity
    AM4378 ARM Cortex-A9 Processor   Linux            Gigabit Ethernet (2)
    1GB DDR3L                                                            Micro SD Card (1)
    TPS65218 Power management IC                         USB2.0 Dual Role/Host (1/1)
    4.3" capacitive touch screen                                   LCD Audio in/out
    On board camera module
    64 MB QSPI-NOR flash
    Connector for Wilink8

    Best Regards,
    Yordan

  • 0 in reply to Yordan Kovachev
    Guru 12350 points
    Hi, Yordan

    O.K. Thank you !

    Actually my customer want to use software of eMMC Boot using same as SD Card.
    Is it possible ?

    Best Regards
    Hiroyasu
  • 0 in reply to Hiroyasu Tazawa1
    TI__Guru**** 161600 points

    Not sure if I understand correctly.

    If they want to boot their device from eMMC by using the MLO & u-boot build with am43xx_evm_config, then yes, this should be possible as long as the device actually has an eMMC to boot from.

    Best Regards,
    Yordan

  • 0 in reply to Yordan Kovachev
    Guru 12350 points

    Hi, Yordan

    Thank you for your reply.
    I got it.

    Best Regards
    Hiroyasu