LPDDR4*.bin binaries for i.MX8M

[yashavanthashet]

Hi,

For i.MX8M , how the "lpddr4_pmu_train_1d_dmem.bin, lpddr4_pmu_train_1d_imem.bin, lpddr4_pmu_train_2d_dmem.bin" are generated, source code path?

For custom boards, can we use the "lpddr*.bin" binary files which are generated while building yocto for iMX8M EVK board?

We have done DDR calibration, stress test and generated code(ddr_init.c, ddrphy_train.c) and did uboot standalone compilation after adding above code to uboot. Is this fine or do we have to update "lpddr*.bin" binary files also after ddr calibration? Is there any relation among them?

Kindly clarify my doubts.

Thanks in advance.

Regards,

Yashavantha

[YanHo0103]

Is the problem fixed? I have the same problem.

Please help!!!!

[igorpadykov]

Hi Yashavantha

>For custom boards, can we use the "lpddr*.bin" binary files which are generated while building yocto for iMX8M >EVK board?

yes, "lpddr4_pmu_train_1d_dmem.bin, lpddr4_pmu_train_1d_imem.bin, lpddr4_pmu_train_2d_dmem.bin"

are not generated by customers, source code is not available. There is no need to update "lpddr*.bin" binary files.

Best regards
igor
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[yyanovsk]

And what happens if we have different DDR chip, not the same which is used in imx8-evk?

We can use the same DDR .bin files? Like lpddr4_pmu_train_fw.bin?

Thanks,

Yan

[mihai_gisca1996]

Hello Mr. Padykov,

Could you guide me how to correctly build the uboot image?

I tried using the commands:

cd ~/android_build

source build/envsetup.sh

lunch evk_8mm-userdebug

./imx-make.sh bootloader -j2 2>&1 | tee build-log.txt 

I do catch warnings like:

"WARNING '/home/mihai-gisca/android_build/vendor/nxp-opensource/uboot-imx/lpddr4_pmu_train_1d_imem.bin' not found, resulting binary is not-functional"

but the build terminates successfully. When booting the entire image, a "Can validate IVT header" error is received.

My question is: is there a specific way in which the binary files from android_build/vendor/nxp-source/imx-mkimage/iMX8M should be added?

README in android_build/vendor/nxp-source/imx-mkimage gives some insights, but I cannot figure it out.

Also here: Error "Can validate IVT header" when flashing imx8m mini 

Best regards,

Mihai Gîsca