lspci command not found in the Jetson NX yocto image built using Ridgerun

[jkdtgit]

Dear Team,
I have referred
https://developer.ridgerun.com/wiki/index.php?title=Yocto_Support_for_NVIDIA_Jetson_Platforms_-_Setting_up_Yocto
built the image and flashed.

1. But I dont see lspci command is there in the image.
2. What is the difference between the Ridgerun project and https://github.com/OE4T/tegra-demo-distro git?
   Did you customize the project after taking from OE4T?

Thanks.
JK

[ichergui]

Hello @jkdtgit

1. try the following command $ /usr/sbin/lspci
2. I don't know exactly the difference. I think that Ridgerun is using the same repo meta-tegra from OE4T

[madisongh]

Questions about RidgeRun's wiki pages are probably best directed at RidgeRun.

As to why you might see lspci in one image but not another, here's a general answer:

lspci is provided by the pciutils package, and in OE-Core, that package is grouped into packagegroup-base-pci. That group is pulled in by packagegroup-base via RDEPENDS based on the pci feature being enabled in both DISTRO_FEATURES and MACHINE_FEATURES. All of the Jetson machine configurations have that enabled in MACHINE_FEATURES. Our demo distro also enables PCI support in DISTRO_FEATURES.

So you might not see it show up in an image if you're building a distro that does not enable PCI features (although I'm pretty sure poky does), or if you're building an image (such as core-image-minimal, perhaps) that does not pull in packagegroup-base. You can also configure build to exclude it, but I suspect that's not the case here.

Or, since @ichergui mentioned that the command is in /usr/sbin, it could just be that the package has been included, but you don't have that directory on your PATH.

[jkdtgit]

@ichergui - There is no lspci command under /usr/sbin.
@madisongh I am using core-image-sato-dev image.
Is pci features supported in this image?

or I have to enable in DISTRO_FEATURES and MACHINE_FEATURES and build the entire project or only that particular recipe?
Basically, can I reduce the build time?

Thanks.

[madisongh]

I am using core-image-sato-dev image.
Is pci features supported in this image?

As far as I know, yes, but I don't use the poky reference distro very much. I suggest learning more about how the Yocto Project tools and their reference distro work, and how to debug problems like this for your builds; documentation and training links are available at their web site.