diff -drupN a/scripts/exchange-sdc0-sdc2-for-dragonboard.sh b/scripts/exchange-sdc0-sdc2-for-dragonboard.sh
--- a/scripts/exchange-sdc0-sdc2-for-dragonboard.sh	1970-01-01 03:00:00.000000000 +0300
+++ b/scripts/exchange-sdc0-sdc2-for-dragonboard.sh	2022-06-12 05:28:14.000000000 +0300
@@ -0,0 +1,103 @@
+#!/bin/bash
+#step1:prepare some tmp files
+#if you want to add your platform,just amend here
+platform=$1
+if [ "$platform" == "sun50iw1p1" ]; then
+	ARCH="arm64"
+	SDC0_FLAG="sdmmc@01c0f000"
+	SDC2_FLAG="sdmmc@01C11000"
+elif [ "$platform" == "sun50iw3p1" ]; then
+	ARCH="arm64"
+	SDC0_FLAG="sdmmc@04020000"
+	SDC2_FLAG="sdmmc@04022000"
+elif [ "$platform" == "sun8iw15p1" ]; then
+	ARCH="arm"
+	SDC0_FLAG="sdmmc@04020000"
+	SDC2_FLAG="sdmmc@04022000"
+elif [ "$platform" == "sun8iw11p1" \
+	-o "$platform" == "sun8iw5p1" \
+	-o "$platform" == "sun8iw6p1" ]; then
+	ARCH="arm"
+	SDC0_FLAG="sdmmc@01c0f000"
+	SDC2_FLAG="sdmmc@01C11000"
+else
+	echo "unsupported platform!!!!!!!!"
+	exit 0
+fi
+#platform independent code
+#decompose the original dtsi to five parts,
+#then compose into new dtsi
+if [ "$ARCH" == "arm" ]; then
+dtsi_file="./arch/${ARCH}/boot/dts/${platform}.dtsi"
+dtsi_bak_file="./arch/${ARCH}/boot/dts/${platform}_bak.dtsi"
+dtsi_start_file="./arch/${ARCH}/boot/dts/${platform}_start.dtsi"
+dtsi_sdc2_file="./arch/${ARCH}/boot/dts/${platform}_sdc2.dtsi"
+dtsi_mid_file="./arch/${ARCH}/boot/dts/${platform}_mid.dtsi"
+dtsi_sdc0_file="./arch/${ARCH}/boot/dts/${platform}_sdc0.dtsi"
+dtsi_end_file="./arch/${ARCH}/boot/dts/${platform}_end.dtsi"
+else
+dtsi_file="./arch/${ARCH}/boot/dts/sunxi/${platform}.dtsi"
+dtsi_bak_file="./arch/${ARCH}/boot/dts/sunxi/${platform}_bak.dtsi"
+dtsi_start_file="./arch/${ARCH}/boot/dts/sunxi/${platform}_start.dtsi"
+dtsi_sdc2_file="./arch/${ARCH}/boot/dts/sunxi/${platform}_sdc2.dtsi"
+dtsi_mid_file="./arch/${ARCH}/boot/dts/sunxi/${platform}_mid.dtsi"
+dtsi_sdc0_file="./arch/${ARCH}/boot/dts/sunxi/${platform}_sdc0.dtsi"
+dtsi_end_file="./arch/${ARCH}/boot/dts/sunxi/${platform}_end.dtsi"
+fi
+
+rm -rf $dtsi_bak_file
+rm -rf $dtsi_start_file
+rm -rf $dtsi_sdc2_file
+rm -rf $dtsi_sdc0_file
+rm -rf $dtsi_end_file
+
+cp $dtsi_file	$dtsi_bak_file
+#step2:decompose the old_dtsi_file=start:sdc2:mid:sdc0:end
+#search the sdc2 head by SDC2_FLAG
+sdc2_start=`sed  -n '/'${SDC2_FLAG}'/=' $dtsi_file`
+#search the sdc2 tail by the first "};" after SDC2_FLAG
+sdc2_end_tmp=`sed  -n ''$sdc2_start',${/'}\;'/=}' $dtsi_file `
+sdc2_end=`echo $sdc2_end_tmp | awk -F ' ' '{print $1}'`
+
+#search the sdc0 head by SDC0_FLAG
+sdc0_start=`sed  -n '/'${SDC0_FLAG}'/=' $dtsi_file`
+#search the sdc0 tail by the first "};" after SDC0_FLAG
+sdc0_end_tmp=`sed  -n ''$sdc0_start',${/'}\;'/=}' $dtsi_file `
+sdc0_end=`echo $sdc0_end_tmp | awk -F ' ' '{print $1}'`
+
+#sdc2_start < sdc0_start normally in dtsi
+if [ "$sdc2_start" -gt "$sdc0_start" ] ;then
+	echo "sdc2 is after sdc0,may be something wrong"
+	exit 0
+fi
+
+part0_start=1
+part0_end=$(($sdc2_start - 1))
+
+part1_start=$(($sdc2_start))
+part1_end=$(($sdc2_end))
+
+part2_start=$(($sdc2_end + 1))
+part2_end=$(($sdc0_start - 1))
+
+part3_start=$(($sdc0_start))
+part3_end=$(($sdc0_end))
+
+part4_start=$(($sdc0_end + 1))
+
+sed -n '1,'${part0_end}'p'                $dtsi_file >> $dtsi_start_file
+sed -n ''${part1_start}','${part1_end}'p' $dtsi_file >> $dtsi_sdc2_file
+sed -n ''${part2_start}','${part2_end}'p' $dtsi_file >> $dtsi_mid_file
+sed -n ''${part3_start}','${part3_end}'p' $dtsi_file >> $dtsi_sdc0_file
+sed -n ''${part4_start}',$p'              $dtsi_file >> $dtsi_end_file
+
+#step3:compose the new_dtsi_file=start:sdc0:mid:sdc2:end
+rm -rf $dtsi_file
+cat $dtsi_start_file $dtsi_sdc0_file $dtsi_mid_file $dtsi_sdc2_file $dtsi_end_file >> $dtsi_file
+
+#step4:clean some tmp files
+rm -rf $dtsi_start_file
+rm -rf $dtsi_sdc2_file
+rm -rf $dtsi_mid_file
+rm -rf $dtsi_sdc0_file
+rm -rf $dtsi_end_file