Bam Margera's got an avenue to maintain a relationship with his son ... but it looks like the former "Jackass" star will have to settle for FaceTime calls with Phoenix, at least for now.
According to new legal docs, obtained by TMZ, Bam's estranged wife Nikki is getting sole legal and physical custody of their 5-year-old boy for the time being, while Bam's being limited to FaceTime visits.
The judge's ruling came down Tuesday .