Mine

pcm.dmix_analogue {
	type dmix
	ipc_key 1024
	slave {
		pcm "hw:0,0"
		channels 2
		period_time 0
		period_size 1024
		buffer_size 8192
	}
}

pcm.dmix_spdif {
    type dmix
    ipc_key 1024
    slave {
        pcm "hw:0,1"
        period_time 0
        period_size 1024
        buffer_size 8192
    }
}

pcm.analogue
{
        type plug
        slave.pcm {
                type hw
                card 1
                device 0
                subdevice 0
        }
}

pcm.spdif
{
        type plug
        slave.pcm {
                type hw
                card 1
                device 1
                subdevice 0
        }
}

ctl.!default {
        type hw
        card 1
}