Orin build: tegra_defconfig moved arm64 -> arm

[filip.kubicz]

Hi! We noticed that between BSP v35.2.1 and v36.3.0, location of tegra_defconfig has been changed. It moved from arch/arm64/configs (in 5.10) to arch/arm/configs in kernel-jammy-src v5.15 in BSP 36.3.0.

What’s the reason for this change? When we run

make -j"$(nproc)" ARCH=arm64 CROSS_COMPILE="${cross_compile_path}" \
        -C "${kernel_src}/" tegra_defconfig

it looks for the config in arch/arm64/configs directory, but changing ARCH to arm leads to other problems later on, e.g.

dpkg-architecture: warning: specified GNU system type arm-linux-gnueabihf does not match CC system type aarch64-buildroot-linux-gnu, try setting a correct CC environment variable
dpkg-buildpackage: info: host architecture armhf

[filip.kubicz]

I found these configs in the arm64 directory. Is there any documentation about those specific files?

ls -l arch/arm64/configs
total 84
-rw-r--r-- 1 filip filip 31654 paź 28 15:52 defconfig
-rw-r--r-- 1 filip filip  1242 paź 28 15:52 defconfig_debug.config
-rw-r--r-- 1 filip filip 28788 paź 28 15:52 tegra_prod_defconfig
-rw-r--r-- 1 filip filip  7922 paź 28 15:52 tegra_recovery_chain_defconfig

[WayneWWW]

Please just use defconfig. The rest of files are not in use.

Rel-35 and rel-36 are major releases where the kernel versions are totally changed.

And rel-36 is using upstream driver now. Thus, we need to follow the policy of upstream Linux kernel. Lots of changes happened there.

[filip.kubicz]

Thank you. Can you point to more changes that we need to be aware when porting from 5.10 to 5.15 and v35.2.1 to v36.3.0?