New problem !
milhouse was working on it per the May'17 quoted in OP.
I searched through ConnMan | 01.org and related material online but haven't found any WiFi AP reference 😏
1. I have the SV6051P wifi chipset on my X96mini (possibly deprecated for 4.xx kernel later), but I can only set both the WiFi and tethered settings ON in LE Configuration- can't see any SSID on my phone and Network Analyzer, while using Wired Network ON for Ethernet as public IP access.
( But WiFi access via default station mode is working fine.)
2. Upon installing Network Tools and ssh'ing:
$iw list
# I get...
Device supports AP-side uAPSD
...
Supported interface modes:
*managed
*AP
* AP/VLAN
*monitor
...
(Among) Supported commands:
*new_interface
*set_interface
*start_ap
*new_station
....etc
software interface modes (can always be added)
*AP/VLAN
*monitor
interface combinations are not supported
______
So I am assuming that the AP mode I am looking for is indeed supported, but not configured.
3. I searched online and found stuff related to create_ap command in hostapd ( but nothing for connmanctl.) But I am assuming start_ap in connmanctl has something to do with setting up AP mode.
4. How can I set up this AP mode (with possibly customizing the SSID and passphrase), and then make it persistent- put it in some config file ?