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Linux/AM4378: Does AM4378 support SDXC ?

Michi Yama
Guru 10030 points
Part Number: AM4378

Tool/software: Linux

Hi, 

I have one question SDXC support with AM437x.

I checked the below thread.

e2e.ti.com/.../355613 Am437x

It is written as the below in it.

> On the hardware level, SDXC is down-compatible with SDHC/SD. So you should not have any problems interfacing a SDXC card.

> On the software level, SDXC is formatted with exFAT, and you will need an exFAT driver to access the card (patented from microsoft).

So I understood SDXC card is supported with AM437x. But exFAT driver is needed for SDXC support on the software level.

My customer is using Linux Processor SDK 2.00.00.  And now customer can't detect SDXC card. So they need to get the exFAT driver of Linux SDK.

 So please let me know how to get exFAT driver.

I appreciate your quick reply.

Best regards,

Michi

  • 0
    TI__Guru 65405 points
    Hi Michi,

    Your understanding is correct about am437x SDXC hardware support but I would like to add additional clarification about SDXC software support.
    The SD driver is capable of handling SDXC cards but for SDXC cards the native ext2 filesystem on Linux should work (ext3/4 file systems also supported). If windows PC compatibility is required the ex-FAT will be required and since this is not supported in Linux community we currently don't have plans for taking this up.

    BR
    Tsvetolin Shulev
  • 0 in reply to Cvetolin Shulev-XID
    TI__Genius 15510 points

    You can also use FAT, but I cannot remember the maximum partition size (2GB or 4GB, maybe).

    exFAT is supported on Ubuntu and Debian, just not our SDK.

    Steve K.