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OMAPL138 的MMC/SD接口能够支持SDXC卡吗？能够支持SD卡最大容量是多少？（环境：在LINUX操作系统下，内核版本为2.6.33）
你好，OMAPL138 的MMC/SD接口不支持SDXC卡，请看下面特性说明：
The MMC/SD card controller supports the following industry standards (with the exception noted below):• MMC (Multimedia Card) Specification v4.0• SD (Secure Digital) Physical Layer Specification v1.1• SDIO (Secure Digital Input Output) Specification v2.0
您好，首先非常感谢您的回答，在我发了这封求助帖之后，我买了一张SDXC的卡(64GB)，进行了实际的测试（环境：OMAPL138 Linux kernel 2.6.33），结果如下：
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mmc0: new high speed SDHC card at address 0007mmcblk0: mmc0:0007 SD64G 59.0 GiB mmcblk0: p1eth0: attached PHY driver [Generic PHY] (mii_bus:phy_addr=1:00, id=221613)IP-Config: Guessing netmask 255.255.255.0IP-Config: Complete: device=eth0, addr=192.168.1.3, mask=255.255.255.0, gw=255.255.255.255, host=192.168.1.3, domain=, nis-domain=(none), bootserver=255.255.255.255, rootserver=192.168.1.112, rootpath=
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可以看出卡被识别了，但是别成的却是SDHC，并且我在开发板 linux 环境下进行了对卡进行了读写测试，能够正常读写，然后我也查看了相应工业标准的相应信息，结果诚如您所说支持的为SDHC。所以现在感到非常困惑，我想知道为什么会产生这种现象，在这种情况下还能否正常使用？期待着您的答复，不胜感激！
