Does the MCIMX6SLL-EVK support SDIO UHS-I mode

[ko-hey]

Hi all

Does the MCIMX6SLL-EVK support SDIO UHS-I mode ?

I know that the i.MX6SLL supports UHS-I compliant.

Can we support SDIO UHS-I mode with the same circuit configuration as the MCIMX6SLL-EVK ?

Do I need a 1.8 V / 3.3 V switching device based on the SDx_VSELECT signal externally ?

Ko-hey

[igorpadykov · Accepted solution]

Hi Ko-hey

there is no need for external 1.8 V / 3.3 V switching since i.MX6SLL (as i.MX6SL) has pad dual voltage

capability : NVCC_3V3, NVCC_1V8. In linux dts there is option for sd high frequency pad settings:

pinctrl_usdhc1_100mhz: usdhc1grp_100mhz
pinctrl_usdhc1_200mhz: usdhc1grp_200mhz

linux/arch/arm/boot/dts/imx6sll-evk.dts

imx6sll-evk.dts\dts\boot\arm\arch - linux-imx - i.MX Linux kernel 

Best regards
igor
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