DisplayPort MST support in RK3399

[Yevhen]

Hello,

I'd like to know if RK3399 DisplayPort IP supports MST mode?

I've found this patchset which says that Rockchip uses Cadence DisplayPort IP and this patchset implements DisplayPort driver for it with MST support:

https://patchwork.kernel.org/project/dri-devel/cover/1539034953-11274-1-...@cadence.com/

I'd like to use the above patchset to implement MST support for the existing CDN DP driver and need to know if it's possible on the hardware level for RK3399.