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interfacing Imx6 with emmc card MTFC8GAMALNA-AAT

saivenkatesh019

when I'm interfacing Imx6 with emmc , the emmc doesn't have card identification pin, so how can i connect the emmc and how to read and write data in emmc card.

  • Connect the VCC and VCCQ (core and I/O supply) pins on the eMMC to appropriate voltage supplies. These usually operate at 3.3V or 1.8V, depending on your eMMC specs and the i.MX6 I/O voltage level. Connect the data lines (DAT0-DAT7), command (CMD), and clock (CLK) lines directly between the i.MX6 and the eMMC. Do not forget to connect the GND pins together. 

    The i.MX6 can detect and interact with the eMMC through the eMMC protocol, part of the SD/MMC host controller interface, without a card detect pin. Here’s what you need to configure in software:

    eMMC interface should be  defined correctly in the device tree with status = "okay";. You must specify the eMMC bus width (4-bit or 8-bit) to match the wiring setup.Define the no-sd property to inform the OS that this is not an SD card interface and no CD pin is available.

  • eMMC typically uses SDIO or MMC interfaces; is your iMX6 configured correctly?