http://ix.io/4sL9
$ dmesg | grep pvtm
[ 10.636922] rockchip-pvtm fda40000.pvtm: pvtm@0 probed
[ 10.636979] rockchip-pvtm fda50000.pvtm: pvtm@1 probed
[ 10.637036] rockchip-pvtm fda60000.pvtm: pvtm@2 probed
[ 10.637090] rockchip-pvtm fdaf0000.pvtm: pvtm@3 probed
[ 10.637137] rockchip-pvtm fdb30000.pvtm: pvtm@4 probed
[ 10.935727] cpu cpu0: pvtm=1479
[ 10.935891] cpu cpu0: pvtm-volt-sel=3
[ 10.944727] cpu cpu4: pvtm=1719
[ 10.950375] cpu cpu4: pvtm-volt-sel=5
[ 10.960574] cpu cpu6: pvtm=1728
[ 10.964935] cpu cpu6: pvtm-volt-sel=5
[ 11.044506] mali fb000000.gpu: pvtm=883
[ 11.044580] mali fb000000.gpu: pvtm-volt-sel=3
[ 11.135347] RKNPU fdab0000.npu: pvtm=879
[ 11.140988] RKNPU fdab0000.npu: pvtm-volt-sel=3
