Backport uncore freq driver fixes and support for agent_types and die_id sysfs attributes

Documentation/admin-guide/pm/intel_uncore_frequency_scaling.rst

@@ -91,12 +91,22 @@ Attributes in each directory:
 ``domain_id``
 	This attribute is used to get the power domain id of this instance.
 
+``die_id``
+	This attribute is used to get the Linux die id of this instance.
+	This attribute is only present for domains with core agents and
+	when the CPUID leaf 0x1f presents die ID.
+
 ``fabric_cluster_id``
 	This attribute is used to get the fabric cluster id of this instance.
 
 ``package_id``
 	This attribute is used to get the package id of this instance.
 
+``agent_types``
+	This attribute displays all the hardware agents present within the
+	domain. Each agent has the capability to control one or more hardware
+	subsystems, which include: core, cache, memory, and I/O.
+
 The other attributes are same as presented at package_*_die_* level.
 
 In most of current use cases, the "max_freq_khz" and "min_freq_khz"

config.x86_64

@@ -8196,6 +8196,7 @@ CONFIG_INTEL_OAKTRAIL=m
 CONFIG_INTEL_RST=m
 CONFIG_INTEL_SMARTCONNECT=m
 CONFIG_INTEL_TPMI=m
+CONFIG_INTEL_PLR_TPMI=m
 # CONFIG_INTEL_TURBO_MAX_3 is not set
 CONFIG_INTEL_VSEC=m
 # CONFIG_MSI_EC is not set

drivers/platform/x86/intel/Kconfig

@@ -192,10 +192,14 @@ config INTEL_SMARTCONNECT
 	  This driver checks to determine whether the device has Intel Smart
 	  Connect enabled, and if so disables it.
 
+config INTEL_TPMI_POWER_DOMAINS
+	tristate
+
 config INTEL_TPMI
 	tristate "Intel Topology Aware Register and PM Capsule Interface (TPMI)"
 	depends on INTEL_VSEC
 	depends on X86_64
+	select INTEL_TPMI_POWER_DOMAINS
 	help
 	  The Intel Topology Aware Register and PM Capsule Interface (TPMI),
 	  provides enumerable MMIO interface for power management features.
@@ -205,6 +209,13 @@ config INTEL_TPMI
 	  To compile this driver as a module, choose M here: the module will
 	  be called intel_vsec_tpmi.
 
+config INTEL_PLR_TPMI
+        tristate "Intel SoC TPMI Power Limit Reasons driver"
+        depends on INTEL_TPMI
+        help
+          This driver provides the TPMI power limit reasons status information
+          via debugfs files.
+
 config INTEL_TURBO_MAX_3
 	bool "Intel Turbo Boost Max Technology 3.0 enumeration driver"
 	depends on X86_64 && SCHED_MC_PRIO

drivers/platform/x86/intel/Makefile

@@ -52,6 +52,10 @@ obj-$(CONFIG_INTEL_PUNIT_IPC)		+= intel_punit_ipc.o
 # TPMI drivers
 intel_vsec_tpmi-y			:= tpmi.o
 obj-$(CONFIG_INTEL_TPMI)		+= intel_vsec_tpmi.o
+obj-$(CONFIG_INTEL_PLR_TPMI)		+= intel_plr_tpmi.o
+
+intel_tpmi_power_domains-y		:= tpmi_power_domains.o
+obj-$(CONFIG_INTEL_TPMI_POWER_DOMAINS)	+= intel_tpmi_power_domains.o
 
 # Intel Uncore drivers
 intel-rst-y				:= rst.o