Hi David, > On Mar 31, 2020, at 23:05, David E. Box <david.e.box@xxxxxxxxxxxxxxx> wrote: > > Hi Kai-Heng, > > This is likely because the system you are using is missing the ACPI > data that exposes the IPC device used to access telemetry. To be sure, > file a bugzilla and add the ACPI dump and we can confirm. Thanks. Filed on here: https://bugzilla.kernel.org/show_bug.cgi?id=207381 Kai-Heng > > David > > On Mon, 2020-03-09 at 21:35 +0800, Kai-Heng Feng wrote: >> Hi, >> >> I am trying to find a way to make a Gemini Lake system successfully >> use intel_telemetry_debugfs. >> >> However, telemetry_pltconfig_valid() in telemetry_debugfs_init() >> never succeeds. >> This is due to telemetry_pltdrv_probe() never gets called, so >> telemetry_set_pltdata() has never set the pltconfig. >> >> I am not sure why the module gets loaded but probe was never called, >> so I wonder if you guys know how to make this work. >> >> Kai-Heng >> >