Hello,
There is no command to directly switch the PoE power supply mode of an AP. However, you can disable the related TLV type by configuring the interface to make it work only in 802.3AT mode.
No command can be used to switch the PoE power supply mode of an AP. However, you can set the type of related TLVs disabled on an interface so that the interface works only in 802.3at mode.
Commands:
[AC]wlan
[AC]port-l n port-link1 // create port-link-profile
[AC]undo lldp tlv-enable dot3-tlv power // this will make your ap work only in AT mode
For details, see https://support.huawei.com/hedex/hdx.do?docid=EDOC1100064350&id=lldp_tlv-enable&lang=en
Please let me know if this is workful.