topic How to implement device tree file to support SD/MMC (SDIO interface)on Imx8mm in i.MX Processors

How to implement device tree file to support SD/MMC (SDIO interface)on Imx8mm

billwu — Fri, 24 Dec 2021 07:08:23 GMT

Dear Sir,

We want to bring up Wifi module by using SD/MMC (SDIO interface) and the name of interface is mmc1.

I have tried to implement "imx8mm-evk.dts" but it seem is not work.

Attached file is modified file.(imx8mm-evk.dts).

Is my understanding correct for imx8mm-evk.dts?

Would you mind checking it,thank you.

Below is our target setting.

B.R.

Bill

joanxie — Mon, 27 Dec 2021 04:44:03 GMT

pls refer to the document as below:

billwu — Mon, 27 Dec 2021 06:05:57 GMT

Dear Joanxie,

Thank for your information.

I have a question about the uSDHC1. Is the uSDHC1 the same Micro-SD(SD2)(ref:below picture).

Sorry for the confusion, I said mmc1 means to Micro-SD.

B.R.

Bill

joanxie — Mon, 27 Dec 2021 10:02:01 GMT

pls see his :

SDHC2 is for MicroSD , SDHC1 is for IWFI/BT

billwu — Mon, 27 Dec 2021 10:14:56 GMT

Dear Joanxie

B.R.

Bill

joanxie — Tue, 28 Dec 2021 03:56:19 GMT

yes, this document is for uSDHC1, if you need to use uSDHC2, you can refer to the document and change the dts according to your own design