i.MX6Q/D/DL/S SDIO bus speed

[andychien]

Dear Sir, 

Our customer used i.MX6Q/DL/S and confuse about SDIO bus speed.

Could you help check uSDHC (SDIO) support 208MHz on all port (1/2/3/4)

And How to setting 208MHz

Thanks, 

[igorpadykov · Accepted solution]

Hi Andy

yes it is supported on all ports. For usage it is necessary to follow i.MX6Q Sabre AI

SCH-27142_c.pdf p.6 design solution "SDa (SD3) power source for MX6 I/O."

SABRE|Automotive-Infotainment|i.MX6 | NXP 

For software use imx6q-sabreauto.dts and documentation on

i.MX Software | NXP 

Best regards
igor
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[andychien]

Dear Sir,

Thanks very much for your confirm.

We checked SCH-27142_c.pdf p.6 design solution "SDa (SD3) power source for MX6 I/O.".

The NVCC_SD3 is 3.3V.

Could you help check the support SDIO=208MHz is NVCC_SD =3.3V or 1.8V?

Thanks,

[igorpadykov]

Hi Andy

please check sect.4.12.4.4 Bus Operation Condition for 3.3 V and 1.8 V Signaling

i.MX 6Dual/6Quad Applications Processors for Consumer Products - Data Sheet

Best regards
igor