Where is uSDHC driver for CM4 in IMX8M Mini?

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Where is uSDHC driver for CM4 in IMX8M Mini?

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takashi_kashiwa
Senior Contributor I

Hi lpcxpresso_support

I download SDK_2.5.0_MIMX8MM5xxxLZ, But it dosen't include uSDHC Driver.

And SDMMC_STACK can't be selected from SDK Dash borad.

Are there plans to release these?

Or can SDK of other board be diverted?

Best Regards,

T.Kashiwagi

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miduo
NXP Employee
NXP Employee

Hello, T.Kashiwagi

You are welcome! And thank you very much for your consideration. :smileyhappy:

Have a nice day!

B.R.

Fang

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miduo
NXP Employee
NXP Employee

Hello,

The i.MX 8M Mini is quite new, and just start with production. So the SDK are not been supported fully. I am pretty sure that the SDHC driver will been added,however I did not find the concrete date for that. I will double confirm.

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howardg
Contributor II

Hello Mr Fang, if you have an updated time for the SD driver's release or integration into SDK 2.5.0 could you please share it?  I guess I should ask if it's ready right now because if it's not I'll add write my own around the lpspi driver but if it's already available that would save me development and debug time.  Thanks in advance and

Best Regards

Howard

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takashi_kashiwa
Senior Contributor I

Hi Howard

I will share the information I confirmed at that time.

--

i.MX8MM's uSDHC pheripherals are smilar to i.MXRT.

I checked that the IMX8 MM uSDHC had the following registers added to the IMXRT uSDHC.

  • Strobe DLL control (STROBE_DLL_CTRL)
  • Strobe DLL Status (STROBE_DLL_STATUS) 

And Reset Value of VEND_SPEC2 is different.( In IMX8MM, it was 0000_0006h)

I think I can divert the i.MX RT uSDHC driver, but I have not been able to confirm the operation.

--

Best Regards,

T.Kashiwagi

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howardg
Contributor II

Thank you T. Kashiwagi san

Howard

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takashi_kashiwa
Senior Contributor I

Hi Fang.

Thank you responding.

> The i.MX 8M Mini is quite new, and just start with production. So the SDK are not been supported fully.

> I am pretty sure that the SDHC driver will been added,however I did not find the concrete date for that.

> I will double confirm.

OK. I am waiting for an announcement.

Best Regards,

T.Kashiwagi

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miduo
NXP Employee
NXP Employee

Hello, T.Kashiwagi

You are welcome! And thank you very much for your consideration. :smileyhappy:

Have a nice day!

B.R.

Fang

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