rz_dmac_lmdesc_addr
nxla = rz_dmac_lmdesc_addr(channel, channel->lmdesc.head);
lmdesc->nxla = rz_dmac_lmdesc_addr(channel, d->start_lmdesc);
u32 start_lmdesc_addr = rz_dmac_lmdesc_addr(channel, desc->start_lmdesc);