linux-brain/arch/arm/boot/dts/imx6sx-sdb-emmc.dts

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/*
* Copyright 2019 NXP
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*/
#include "imx6sx-sdb.dts"
/*
* The eMMC chip on imx6sx sdb board is DNP by default.
* Need do hw rework to burn the eMMC4.5 chip on the eMMC socket on uSDHC4
* and connect eMMC signals as well as disconnect BOOT SD CARD slot signals
*/
&usdhc4 {
pinctrl-names = "default", "state_100mhz", "state_200mhz";
pinctrl-0 = <&pinctrl_usdhc4_1>;
pinctrl-1 = <&pinctrl_usdhc4_1_100mhz>;
pinctrl-2 = <&pinctrl_usdhc4_1_200mhz>;
bus-width = <8>;
auto-cmd23-broken;
/*
* overwrite cd-gpios and wp-gpios since they are reused as eMMC DATA
* signals after rework
*/
cd-gpios = <>;
wp-gpios = <>;
non-removable;
status = "okay";
};