hello roey.bh,
taking reference sensor driver Raspberry Pi v2, imx219 as an example,
as you can see from the device tree sources,
for example,
NX were using t19x,
$L4T_Sources/r32.4.3/Linux_for_Tegra/source/public/hardware/nvidia/platform/t19x/jakku/kernel-dts/common/tegra194-camera-rbpcv2-imx219.dtsi
and, Nano were based-on t210
$L4T_Sources/r32.4.3/Linux_for_Tegra/source/public/hardware/nvidia/platform/t210/porg/kernel-dts/porg-platforms$ vim tegra210-camera-rbpcv2-imx219.dtsi
you may also refer to Topic 139727 for IMX219 image quality issue on NX.
since they’re going through different camera software pipelines; even same camera module will shows different results on Nano and NX platforms.
thanks