To use i.MX6DQ SDIO with 1.8V/25MHz (not UHS).

[satoshishimoda]

Hi community,

Our customer have a question about i.MX6DQ SDIO.

They want to use SDIO with 1.8V to connect a Wi-Fi module.

Then, I found the following posts talk about 1.8V SD/MMC.

How to enable UHS mode for SD card in u-boot_201304

supporting SDR104 in imx6 board by yocto

But I feel the solutions in these posts are the one for when use the SABRE AI schematics.

Our customer don't need SD voltage switching and UHS, and will use 1.8V SDIO with 25MHz.

In this case, what is required to use SDIO = 1.8V?

Best Regards,

Satoshi Shimoda

[igorpadykov · Accepted solution]

Hi Satoshi

it is sufficient to power i.MX6 NVCC_SDx (providing power for this

interface) with 1.8V.

Best regards

igor

-----------------------------------------------------------------------------------------------------------------------

Note: If this post answers your question, please click the Correct Answer button. Thank you!

-----------------------------------------------------------------------------------------------------------------------

[satoshishimoda]

Hi Igor,

> it is sufficient to power i.MX6 NVCC_SDx (providing power for this

> interface) with 1.8V.

Good.

Thank you for your prompt support.

Best Regards,

Satoshi Shimoda