cannot get touchpad mouse, no psm device, on Dell Precision 3520

Please help get touchpad mouse on
Dell Precision 3520.
The usb mouse works fine.

z> pciconf -lv
hostb0_at_pci0:0:0:0:      class=0x060000 card=0x07a91028 chip=0x19108086 rev=0x07 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Host Bridge/DRAM Registers'
    class      = bridge
    subclass   = HOST-PCI
pcib1_at_pci0:0:1:0:       class=0x060400 card=0x07a91028 chip=0x19018086 rev=0x07 hdr=0x01
    vendor     = 'Intel Corporation'
    device     = 'Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor PCIe Controller (x16)'
    class      = bridge
    subclass   = PCI-PCI
vgapci1_at_pci0:0:2:0:     class=0x030000 card=0x07a91028 chip=0x191b8086 rev=0x06 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'HD Graphics 530'
    class      = display
    subclass   = VGA
none0_at_pci0:0:4:0:       class=0x118000 card=0x07a91028 chip=0x19038086 rev=0x07 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Xeon E3-1200 v5/E3-1500 v5/6th Gen Core Processor Thermal Subsystem'
    class      = dasp
xhci0_at_pci0:0:20:0:      class=0x0c0330 card=0x07a91028 chip=0xa12f8086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H USB 3.0 xHCI Controller'
    class      = serial bus
    subclass   = USB
none1_at_pci0:0:20:2:      class=0x118000 card=0x07a91028 chip=0xa1318086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H Thermal subsystem'
    class      = dasp
none2_at_pci0:0:21:0:      class=0x118000 card=0x07a91028 chip=0xa1608086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H Serial IO I2C Controller'
    class      = dasp
none3_at_pci0:0:21:1:      class=0x118000 card=0x07a91028 chip=0xa1618086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H Serial IO I2C Controller'
    class      = dasp
none4_at_pci0:0:22:0:      class=0x078000 card=0x07a91028 chip=0xa13a8086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H CSME HECI'
    class      = simple comms
ahci0_at_pci0:0:23:0:      class=0x010601 card=0x07a91028 chip=0xa1028086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H SATA controller [AHCI mode]'
    class      = mass storage
    subclass   = SATA
pcib2_at_pci0:0:28:0:      class=0x060400 card=0x07a91028 chip=0xa1118086 rev=0xf1 hdr=0x01
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H PCI Express Root Port'
    class      = bridge
    subclass   = PCI-PCI
pcib3_at_pci0:0:28:2:      class=0x060400 card=0x07a91028 chip=0xa1128086 rev=0xf1 hdr=0x01
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H PCI Express Root Port'
    class      = bridge
    subclass   = PCI-PCI
pcib4_at_pci0:0:28:4:      class=0x060400 card=0x07a91028 chip=0xa1148086 rev=0xf1 hdr=0x01
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H PCI Express Root Port'
    class      = bridge
    subclass   = PCI-PCI
pcib5_at_pci0:0:29:0:      class=0x060400 card=0x07a91028 chip=0xa1188086 rev=0xf1 hdr=0x01
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H PCI Express Root Port'
    class      = bridge
    subclass   = PCI-PCI
isab0_at_pci0:0:31:0:      class=0x060100 card=0x07a91028 chip=0xa1548086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H LPC Controller'
    class      = bridge
    subclass   = PCI-ISA
none5_at_pci0:0:31:2:      class=0x058000 card=0x07a91028 chip=0xa1218086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H PMC'
    class      = memory
hdac0_at_pci0:0:31:3:      class=0x040300 card=0x07a91028 chip=0xa1718086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'CM238 HD Audio Controller'
    class      = multimedia
    subclass   = HDA
none6_at_pci0:0:31:4:      class=0x0c0500 card=0x07a91028 chip=0xa1238086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Sunrise Point-H SMBus'
    class      = serial bus
    subclass   = SMBus
em0_at_pci0:0:31:6:        class=0x020000 card=0x07a91028 chip=0x15e38086 rev=0x31 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Ethernet Connection (5) I219-LM'
    class      = network
    subclass   = ethernet
vgapci0_at_pci0:1:0:0:     class=0x030200 card=0x07a91028 chip=0x13b410de rev=0xa2 hdr=0x00
    vendor     = 'NVIDIA Corporation'
    device     = 'GM107GLM [Quadro M620 Mobile]'
    class      = display
    subclass   = 3D
iwm0_at_pci0:2:0:0:        class=0x028000 card=0x00508086 chip=0x24fd8086 rev=0x78 hdr=0x00
    vendor     = 'Intel Corporation'
    device     = 'Wireless 8265 / 8275'
    class      = network
none7_at_pci0:3:0:0:       class=0xff0000 card=0x07a91028 chip=0x525a10ec rev=0x01 hdr=0x00
    vendor     = 'Realtek Semiconductor Co., Ltd.'
    device     = 'RTS525A PCI Express Card Reader'
nvme0_at_pci0:61:0:0:      class=0x010802 card=0x00001c5c chip=0x12841c5c rev=0x00 hdr=0x00
    vendor     = 'SK hynix'
    class      = mass storage
    subclass   = NVM
z> 

Thanks

Anton