eMMC Binding For i.MX8MP

[Wobaffet]

Hello,

I'd like to ask a question about how does CMD and STROBE pins for eMMC at the i.MX8MP-EVK is not mentioned at the binding for uSDHC. But they're declared at the dts for the evk and can be seen on the schematic. Am I missing a binding or something like that? Thank you in advance!

	pinctrl_usdhc3: usdhc3grp {
		fsl,pins = <
			MX8MP_IOMUXC_NAND_WE_B__USDHC3_CLK	0x190
			MX8MP_IOMUXC_NAND_WP_B__USDHC3_CMD	0x1d0
			MX8MP_IOMUXC_NAND_DATA04__USDHC3_DATA0	0x1d0
			MX8MP_IOMUXC_NAND_DATA05__USDHC3_DATA1	0x1d0
			MX8MP_IOMUXC_NAND_DATA06__USDHC3_DATA2	0x1d0
			MX8MP_IOMUXC_NAND_DATA07__USDHC3_DATA3	0x1d0
			MX8MP_IOMUXC_NAND_RE_B__USDHC3_DATA4	0x1d0
			MX8MP_IOMUXC_NAND_CE2_B__USDHC3_DATA5	0x1d0
			MX8MP_IOMUXC_NAND_CE3_B__USDHC3_DATA6	0x1d0
			MX8MP_IOMUXC_NAND_CLE__USDHC3_DATA7	0x1d0
			MX8MP_IOMUXC_NAND_CE1_B__USDHC3_STROBE	0x190
		>;
	};

[Sanket_Parekh · Accepted solution]

Hi @Wobaffet 

I hope you are doing well

Please make a note that pin control definitions are generally not documented in dt-binding documentation as the dt-binding documents are not processor-specific. The pin-muxing related information can be found in chapter 8 Chip IO and Pinmux from the processor reference manual MX8MPRM.

Thanks & Regards

Sanket Parekh