Re: [Buildroot] Camera Driver diesn't provide 60 FPS

[Thomas Petazzoni via buildroot <buildroot@buildroot.org>]

Hello Gerd,

On Tue, 22 Aug 2023 09:39:06 +0000
Gerd Kautzmann <G.Kautzmann@PRIMES.de> wrote:

> I finally managed to build an linux image suporting my imx296 camera
> on the Raspberry-Pi 4 (32 bit) over loadable kernel modules. There
> where good examples for building a helloworld kernel module. At first
> everything looked fine, but than I realised the camera is limited to
> 30 frames per second. I compiled a test program confirming the
> problem under the build root kernel. On a, standart Raspbi image
> (Debian) I got 60 fps using the same drivers (compiled and installed
> over dpkg) with the same settings in the boot-filesystem. The driver
> is reporting the camera to be able to do 60 fps but test program (and
> application) are only reaching 30 fps.
> 
> Are there any ideas about settings in the configuration concerning
> cameras I might have missed?

This really isn't a Buildroot-related question, so I'm not sure this
mailing list is the most relevant place to get support on this
question. It's really a RaspberryPi-specific question.

Best regards,

Thomas
-- 
Thomas Petazzoni, co-owner and CEO, Bootlin
Embedded Linux and Kernel engineering and training
https://bootlin.com
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