Quote from: zumpbond2000 on June 19, 2017, 11:39:53 PM

is it possible to specify different frequency for each device?

Example 2 devices (2pac bm1384) 1 wtih 230 and another with 300 mhz on the same pool with same worker?

You can target cgminer to a specific device.

run ./cgminer -n to get a list of devices

if you get:
.USB dev 3: Bus 1 Device 11 ID: 10c4:ea60
Manufacturer: 'GekkoScience'
Product: '2Pac BM1384 Bitcoin Miner'
.USB dev 3: Bus 1 Device 12 ID: 10c4:ea60
Manufacturer: 'GekkoScience'
Product: '2Pac BM1384 Bitcoin Miner'

you can target the first device by using
--gekko-2pac-freq 230 --usb 1:11
for the second run of cgminer
--gekko-2pac-freq 300 --usb 1:12