Yocto BSP Ver.A User Guide for ROM-5722 (iMX8MP Dual Lite)

Prerequisites

refer to Yocto Linux BSP Ver.A User Guide for iMX8 series
use the following settings to build one generic ROM-5722 image for iMX8MP Quad/Dual

Get_BSP

specify manifest file to imx8LBVA1021.xml

Build Instructions

MC=imx8mprom5722a1

UC=4G

config u-boot-imx

# development stage
devtool modify u-boot-imx

# modify arch/arm/mach-imx/imx8m/soc.c
pushd workspace/sources/u-boot-imx

# use vi/vim to create one patch

* copy & paste the following text to keep tab char *

--- a/arch/arm/mach-imx/imx8m/soc.c
+++ b/arch/arm/mach-imx/imx8m/soc.c
@@ -799,7 +799,12 @@ int disable_vpu_nodes(void *blob)
 	const char *nodes_path_8mp[] = {
 		"/vpu_g1@38300000",
 		"/vpu_g2@38310000",
-		"/vpu_vc8000e@38320000"
+		"/vpu_vc8000e@38320000",
+		"/soc@0/blk-ctl@38330000",
+		"/soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@19",
+		"/soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@20",
+		"/soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@21",
+		"/soc@0/bus@30000000/gpc@303a0000/pgc/power-domain@22"
 	};

 	if (is_imx8mq())

patch -p1 < patch && rm patch

popd

# check if the modification works well
bitbake u-boot-imx

config linux-imx

# insert one command into recipe, linux-imx
pushd ../sources/meta-advantech/meta-fsl-imx/recipes-kernel/linux

sed '/do_copy_defconfig_mx8/a \    mkdir -p ${B}' linux-imx_5.4.bbappend

popd

# development stage
devtool modify linux-imx

# modify arch/arm64/boot/dts/freescale/imx8mp-rom5722-a1.dts
pushd workspace/sources/linux-imx

# use vi/vim to create one patch (copy & paste the following text to keep tab char)

--- a/arch/arm64/boot/dts/freescale/imx8mp-rom5722-a1.dts
+++ b/arch/arm64/boot/dts/freescale/imx8mp-rom5722-a1.dts
@@ -1302,15 +1302,15 @@
 };
 
 &vpu_g1 {
-	status = "okay";
+	status = "disabled";
 };
 
 &vpu_g2 {
-	status = "okay";
+	status = "disabled";
 };
 
 &vpu_vc8000e {
-	status = "okay";
+	status = "disabled";
 };
 
 &gpu_3d {

patch -p1 < patch && rm patch

popd

# check if the modification works well
bitbake linux-imx