ISP differences between Genio 510/700 and 520/720

General Discussion
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Hi!

What are the differences in the general pipeline of ISP between Genio 510/700 and Genio 520/720?

For example, consider this DTS for IMX258 for Genio 720:

https://gitlab.com/mediatek/aiot/rity/meta-mediatek-bsp/-/blob/scarthgap/recipes-kernel/dtbo/v6/genio-720-evk/camera-imx258-dual-std.dts?ref_type=heads

It uses the standard kernel driver.

Now, Genio 700 (with similar camera, IMX214):

https://gitlab.com/mediatek/aiot/rity/meta-mediatek-bsp/-/blob/scarthgap/recipes-kernel/dtbo/v6/genio-700-evk/camera-imx214-csi1.dts?ref_type=heads

It uses custom mtk-camisp-driver. There is DTS for a different pipeline, but if I understand correctly, ISP is disabled for it. To integrate a new camera, a custom sensor driver is required (per documentation).

So my question is - how ISP works in newer generation? Does it require the custom drivers/interfaces for cameras like mtk-camisp-driver, or there is a different mechanism?