Hi,

HP Spectre laptop, model W2K28UA, circa 2016
4.20.0-0.rc5.git2.1.fc30.x86_64
[    0.000000] DMI: HP HP Spectre Notebook/81A0, BIOS F.42 10/25/2018

[chris@flap ~]$ sudo lsmod | grep tpm
[chris@flap ~]$ dmesg | grep -i tpm
[    0.000000] efi:  SMBIOS=0x3a57a000  ESRT=0x3a57d718  ACPI
2.0=0x3affe014  PROP=0x229d0278  TPMEventLog=0x2100c018
[    0.023050] ACPI: TPM2 0x000000003AFF9000 000034 (v03 HPQOEM INSYDE
  00000000 HP   00040000)
[    2.066860] tpm_crb MSFT0101:00: can't request region for resource
[mem 0x3af5b000-0x3af5b02f]
[    2.066916] tpm_crb: probe of MSFT0101:00 failed with error -16
[    2.324683] ima: No TPM chip found, activating TPM-bypass!

Previously filed a bug here:
https://bugzilla.kernel.org/show_bug.cgi?id=185631

--
Chris Murphy