[root@dell-per740-91 iproute]# dpll pin show id 6
pin id 6:
  module-name: ice
  clock-id: 5799633565437511660
  board-label: GNSS-1PPS
  type: gnss
  frequency: 1 Hz
  frequency-supported:
    1 Hz
  capabilities: 0x6 state-can-change priority-can-change
  phase-adjust-min: -100000000
  phase-adjust-max: 100000000
  phase-adjust: 0
  parent-device:
    id 0 direction input prio 0 state disconnected phase-offset 0
    id 1 direction input prio 0 state disconnected phase-offset 0

[root@dell-per740-91 iproute]# dpll pin set id 6 phase-adjust 1

[root@dell-per740-91 iproute]# dpll pin set id 6 phase-adjust -1
dpll: invalid option -- '1'
Unknown option.
Usage: dpll [ OPTIONS ] OBJECT { COMMAND | help }
       dpll [ -j[son] ] [ -p[retty] ]
where  OBJECT := { device | pin | monitor }
       OPTIONS := { -V[ersion] | -j[son] | -p[retty] }