Geode LX800 Audio Driver

I´m using QNX 4.25 in a Geode LX800.
The graphic driver and the network driver are completely supported in QNX4.
It works fine.

However, the audio driver for the Geode LX800 - AMD CS5535 chipset is not supported.
Is there the driver somewhere? Is there the plan to develop the driver?

Thanks.