bluetooth working (beta) in 4.14 + 4.19 (except btle)
BPi-R2 does not power-off: GitHub (working in 4.14+4.19+5.x)
Switch 7530 Port-separation/vlan in 4.4.x not supported, in 4.14+ vlan+separation works
2nd GMAC works on 4.14+4.19, in 5.x this is only available on phylink-branches,5.10-gmac has dsa patches for second gmac,above gmac2 can be used with vlan aware bridge