Error about Enabling SPI/SPIDev on 28.1

Robotics & Edge Computing Jetson & Embedded Systems Jetson TX2
1

I tried the tutorial following Jetson/TX2 SPI - eLinux.org on real TX2. However, all those steps had passed, except

sudo ./flash.sh -r -k kernel-dtb jetson-tx2 mmcblk0p1

there is no flash.sh in TX2.

So I tried the tutorial on host machine. However, the errors occurred when i run the command

$ git clone http://github.com/jetsonhacks/buildJetsonTX2Kernel.git

 $ cd buildJetsonTX2Kernel
 $ ./getKernelSources.sh

This one

$ ./getKernelSources.sh

the errors:

Get:8 file:/var/visionworks-tracking-repo  Release [2,008 B]                   
Hit:13 http://us.archive.ubuntu.com/ubuntu xenial InRelease                    
Get:14 http://security.ubuntu.com/ubuntu xenial-security InRelease [107 kB] 
Get:15 http://us.archive.ubuntu.com/ubuntu xenial-updates InRelease [109 kB]
Get:16 http://us.archive.ubuntu.com/ubuntu xenial-backports InRelease [107 kB] 
Fetched 323 kB in 2s (144 kB/s)                               
Reading package lists... Done
Reading package lists... Done
Building dependency tree       
Reading state information... Done
pkg-config is already the newest version (0.29.1-0ubuntu1).
qt5-default is already the newest version (5.5.1+dfsg-16ubuntu7.5).
The following packages were automatically installed and are no longer required:
  linux-headers-4.13.0-36 linux-headers-4.13.0-36-generic
  linux-headers-4.13.0-45 linux-headers-4.13.0-45-generic
  linux-headers-4.15.0-30 linux-headers-4.15.0-30-generic
  linux-image-4.13.0-36-generic linux-image-4.13.0-45-generic
  linux-image-4.15.0-30-generic linux-image-extra-4.13.0-36-generic
  linux-image-extra-4.13.0-45-generic linux-modules-4.15.0-30-generic
Use 'sudo apt autoremove' to remove them.
0 upgraded, 0 newly installed, 0 to remove and 166 not upgraded.
--2018-08-25 03:21:58--  http://developer.download.nvidia.com/embedded/L4T/r28_Release_v2.0/GA/BSP/tx2_sources.tbz2

Resolving developer.download.nvidia.com (developer.download.nvidia.com)... 58.216.33.87, 58.216.33.88, 58.223.168.55, ...
Connecting to developer.download.nvidia.com (developer.download.nvidia.com)|58.216.33.87|:80... connected.
HTTP request sent, awaiting response... 304 Not Modified
File ‘tx2_sources.tbz2’ not modified on server. Omitting download.

bzip2: (stdin) is not a bzip2 file.
tar: Child returned status 2
tar: Error is not recoverable: exiting now
tar: public_release/kernel_src.tbz2: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
rm: cannot remove 'public_release': No such file or directory
./scripts/getKernelSources.sh: line 11: cd: kernel/kernel-4.4: No such file or directory
gzip: /proc/config.gz: No such file or directory
make: *** No rule to make target 'xconfig'.  Stop.<li></li>

the command can run on target TX2, but can not on host machine.

can anyone help me ? Plz.

2

After you run the JetPack-L4T-xxxx-linux-x64_b23.run the 64_TX2/Linux_for_Tegra folder should be gen and the flash.sh must be there.

3

Right, the file ‘flash.sh’ is on the host machine, but not on the target TX2.

4

Yes, you have to update the DTB from host instead of tegra device.

5

However, when I run the commands on host machine, this one can not work.

$ ./getKernelSources.sh

The errors occur like my fist posted.

Resolving developer.download.nvidia.com (developer.download.nvidia.com)... 58.216.33.87, 58.216.33.88, 58.223.168.55, ...
Connecting to developer.download.nvidia.com (developer.download.nvidia.com)|58.216.33.87|:80... connected.
HTTP request sent, awaiting response... 304 Not Modified
File ‘tx2_sources.tbz2’ not modified on server. Omitting download.

bzip2: (stdin) is not a bzip2 file.
tar: Child returned status 2
tar: Error is not recoverable: exiting now
tar: public_release/kernel_src.tbz2: Cannot open: No such file or directory
tar: Error is not recoverable: exiting now
rm: cannot remove 'public_release': No such file or directory
./scripts/getKernelSources.sh: line 11: cd: kernel/kernel-4.4: No such file or directory
gzip: /proc/config.gz: No such file or directory
make: *** No rule to make target 'xconfig'.  Stop.<li></li>
6

If you want to get the kernel source to build on your host device please check the l4t-document in download center.

7

Hi~

I download the files manually.

Finally, the command runs without errors.

However, my host machine is X86, and the TX2 is ARM64.

when i run the command https://elinux.org/Jetson/TX2_SPI

$ cd /usr/src/kernel/kernel-4.4
 $ sudo make tegra18_defconfig

It does not work on host X86.

m@ubuntu:/usr/src/kernel/kernel-4.4$ sudo make tegra18_defconfig
  HOSTCC  scripts/kconfig/conf.o
  HOSTLD  scripts/kconfig/conf
***
*** Can't find default configuration "arch/x86/configs/tegra18_defconfig"!
***
scripts/kconfig/Makefile:111: recipe for target 'tegra18_defconfig' failed
make[1]: *** [tegra18_defconfig] Error 1
Makefile:542: recipe for target 'tegra18_defconfig' failed
make: *** [tegra18_defconfig] Error 2
8

Your compile thinks it is compiling for a desktop PC. Note this:

*** Can't find default configuration "arch/<u><b>x86</b></u>/configs/tegra18_defconfig"!

Are you trying to cross compile from a PC? If so, have you set up the environment with the cross tools? Here are some notes on this:
https://devtalk.nvidia.com/default/topic/1038175/jetson-tx2/tx2i-wifi-support/post/5274619/#5274619