iMX6Q eMMC 5.0 Mixed SD3 and SD4

[DaengCheong]

Can I use sd4 in myBoard.dtsi file as below?

pinctrl_usdhc4: usdhc4grp {
fsl,pins = <
MX6QDL_PAD_SD4_CMD__SD4_CMD 0x17059
MX6QDL_PAD_SD4_CLK__SD4_CLK 0x10059
MX6QDL_PAD_SD4_DAT0__SD4_DATA0 0x17059
MX6QDL_PAD_SD4_DAT1__SD4_DATA1 0x17059
MX6QDL_PAD_SD4_DAT2__SD4_DATA2 0x17059
MX6QDL_PAD_SD4_DAT3__SD4_DATA3 0x17059
MX6QDL_PAD_SD4_DAT4__SD4_DATA4 0x17059
MX6QDL_PAD_SD4_DAT5__SD4_DATA5 0x17059
MX6QDL_PAD_SD4_DAT6__SD4_DATA6 0x17059
MX6QDL_PAD_SD4_DAT7__SD4_DATA7 0x17059
MX6QDL_PAD_SD3_RST__SD3_RESET 0x17059
>;
};

[Dhruvit · Accepted solution]

Hi @DaengCheong,

I hope you are doing well.

->One can use sd4 as given below.
->One can also find the reference for the same at the given below location.
<src_code>/Documentation/devicetree/bindings/pinctrl/fsl,imx-pinctrl.txt

One can also find the supported external signal on sd4 in the reference manual Table 67-4. USDHC4 External Signals
Please take a look at this link.
https://www.nxp.com/webapp/Download?colCode=IMX6DQRM

Thanks & Regards,
Dhruvit Vasavada