- Take a look at the documentation under Documentation/edac.txt in the kernel.org tree.
- Obtain the manufacturer's datasheet (and add to the main page of this wiki).
- Take a look at the sample code "test_device_edac", and try to find the existing driver which is most similar to the driver you intend to write.
- Make sure you're not duplicating effort with someone else! Consult the mailing list!
- Get writing!
- Release early and often.