On Wed, Jul 12, 2023 at 03:59:48PM -0700, Srinivas Pandruvada wrote: > Some of the PM features can be locked or disabled. In that case, write > interface can be locked. > > This status is read via a mailbox. There is one TPMI ID which provides > base address for interface and data register for mail box operation. > The mailbox operations is defined in the TPMI specification. Refer to > https://github.com/intel/tpmi_power_management/ for TPMI specifications. > > An API is exposed to feature drivers to read feature control status. ... > +#define TPMI_CONTROL_TIMEOUT_MAX_US (1 * USEC_PER_SEC) > +#define TPMI_RB_TIMEOUT_MAX_US USEC_PER_SEC In the similar way? -- With Best Regards, Andy Shevchenko