SK-AM62A-LP: EMMC Flashing on our production board

Hi Rachel,

On the production board, please make sure the DDR configuration matches closely to the AM62A EVM.

This is a very common issue faced on custom boards.

Do check the below thread for more understanding of this issue: https://e2e.ti.com/support/processors-group/processors/f/processors-forum/1316848/am62a7-custom-board-stuck-in-spl

Regards,
Aparna

Hi Aparna,

For our custom board I try the Linux Board Port (ti.com) guide.

I get the "*** Can't find default configuration "arch/arm64/configs/tisdk_am62ax-evm_defconfig"!" error

on "make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' tisdk_am62ax-evm_defconfig" command.

Do you know why?

Thanks,
Rachel

Hi Rachel,

Which SDK version are you using?

Regards,
Aparna

Hi Aparna,

The SDK version is ti-processor-sdk-linux-rt-edgeai-am62axx-evm-09_01_00_02.

Thanks,
Rachel

Hi Rachel,

The SDK version ti-processor-sdk-linux-am62axx-evm-08.06.00.45 has tisdk_am62ax-evm_defconfig in arch/arm64/configs directory. You can try copying this file into 9.1 SDK and try again.

tisdk_am62axx-evm_defconfig

Regards,
Aparna

Hi Aparna,

Thanks on your answer!
Do you know why the command

make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' dtbs

Failed on:

DTC arch/arm64/boot/dts/ti/k3-am62a7-hello-world.dtb
arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "mcu_mcan0"

also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "mcu_mcan1"

also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "mcu_uart0"

also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "wkup_uart0"

also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
arch/arm64/boot/dts/ti/k3-am62a7.dtsi:104.27-145.4: ERROR (phandle_references): /opp-table: Reference to non-existent node or label "wkup_conf"

ERROR: Input tree has errors, aborting (use -f to force output)
make[2]: *** [scripts/Makefile.lib:424: arch/arm64/boot/dts/ti/k3-am62a7-hello-world.dtb] Error 2
make[1]: *** [scripts/Makefile.build:502: arch/arm64/boot/dts/ti] Error 2
make: *** [Makefile:1478: dtbs] Error 2

Thanks,
Rachel

Hi Rachel,

Also, run the command, and then build dtbs:

make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' defconfig

Can you share the steps you have followed until now.

Regards,
Aparna

Hi Aparna,

The steps that I did:

1. sdk installation
2. Download the k3-am62a7-hello-world.dts file from Linux Board Port (ti.com)
3. Copy the k3-am62a7-hello-world.dts file to ti-processor-sdk-linux-rt-edgeai-am62axx-evm-09_01_00_02/board-support/ti-linux-kernel-6.1.46+gitAUTOINC+b871cdee8c-gb871cdee8c/arch/arm64/boot/dts/ti
4. Add the line: 

   dtb-$(CONFIG_ARCH_K3) += k3-am62a7-hello-world.dtb

   to ti-processor-sdk-linux-rt-edgeai-am62axx-evm-09_01_00_02/board-support/ti-linux-kernel-6.1.46+gitAUTOINC+b871cdee8c-gb871cdee8c/arch/arm64/boot/dts/ti/Makefile
5. export PATH=<toolchain location>/arm-gnu-toolchain-13.2.Rel1-x86_64-arm-none-linux-gnueabihf/bin:$PATH
6. export PATH=<toolchain location>/arm-gnu-toolchain-13.2.Rel1-x86_64-aarch64-none-linux-gnu/bin:$PATH
7. Copy the tisdk_am62axx-evm_defconfig file to ti-processor-sdk-linux-rt-edgeai-am62axx-evm-09_01_00_02/board-support/ti-linux-kernel-6.1.46+gitAUTOINC+b871cdee8c-gb871cdee8c/arch/arm64/configs
8. Run the below commands in ti-processor-sdk-linux-rt-edgeai-am62axx-evm-09_01_00_02/board-support/ti-linux-kernel-6.1.46+gitAUTOINC+b871cdee8c-gb871cdee8c
   make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' mrproper
   make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' tisdk_am62axx-evm_defconfig
   make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' defconfig
   make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' dtbs (I put the /delete-node/ &sdhci2; in comment in arch/arm64/boot/dts/ti/k3-am62a7-hello-world.dts file)
   
   But I still get the errors:
   

   DTC arch/arm64/boot/dts/ti/k3-am62a7-hello-world.dtb
   arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "mcu_mcan0"

   also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
   arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "mcu_mcan1"

   also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
   arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "mcu_uart0"

   also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
   arch/arm64/boot/dts/ti/k3-am62a-main.dtsi:203.35-226.4: ERROR (phandle_references): /bus@f0000/system-controller@44043000: Reference to non-existent node or label "wkup_uart0"

   also defined at arch/arm64/boot/dts/ti/k3-am62a.dtsi:129.7-131.3
   arch/arm64/boot/dts/ti/k3-am62a7.dtsi:104.27-145.4: ERROR (phandle_references): /opp-table: Reference to non-existent node or label "wkup_conf"

   ERROR: Input tree has errors, aborting (use -f to force output)
   make[2]: *** [scripts/Makefile.lib:424: arch/arm64/boot/dts/ti/k3-am62a7-hello-world.dtb] Error 2
   make[1]: *** [scripts/Makefile.build:502: arch/arm64/boot/dts/ti] Error 2
   make: *** [Makefile:1478: dtbs] Error 2

   Can you help me please?
   
   Thanks,
   Rachel

Hi Rachel,

Can you try adding the following to the Makefile arch/arm64/boot/dts/ti/Makefile and re-build.

dtb-$(CONFIG_ARCH_K3) += k3-am62a7-sk.dtb
dtb-$(CONFIG_ARCH_K3) += k3-am62a7-hello-world.dtb

Regards,
Aparna

Hi Aparna,

It still fails.

Thanks,
Rachel

Hi Rachel,

Could you try running the following commands:

make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' mrproper
make ARCH=arm64 CROSS_COMPILE=aarch64-oe-linux- defconfig ti_arm64_prune.config
make ARCH=arm64 CROSS_COMPILE='aarch64-none-linux-gnu-' dtbs