Openwrt on mikrotik, can it support HSGMII on sfp+ cage?

i wanna know if i install openwrt on mikrotik router it can support HSGMII (2.5gibit) on spf+ cage

Which exact router model are you talking about?

like RB4011iGS+5HacQ2HnD-IN

I don't think there is OpenWrt support for this one yet. That said from a SoC point of view it might be similar to the Netgear R9000 which has experimental albeit still out-of-tree support as discussed here: