From 6251d38059ae22304ede4f3748af9f795bdbf4fd Mon Sep 17 00:00:00 2001 From: Besar Wicaksono Date: Wed, 28 Sep 2022 19:28:34 -0500 Subject: ACPI: ARM Performance Monitoring Unit Table (APMT) initial support ARM Performance Monitoring Unit Table describes the properties of PMU support in ARM-based system. The APMT table contains a list of nodes, each represents a PMU in the system that conforms to ARM CoreSight PMU architecture. The properties of each node include information required to access the PMU (e.g. MMIO base address, interrupt number) and also identification. For more detailed information, please refer to the specification below: * APMT: https://developer.arm.com/documentation/den0117/latest * ARM Coresight PMU: https://developer.arm.com/documentation/ihi0091/latest The initial support adds the detection of APMT table and generic infrastructure to create platform devices for ARM CoreSight PMUs. Similar to IORT the root pointer of APMT is preserved during runtime and each PMU platform device is given a pointer to the corresponding APMT node. Signed-off-by: Besar Wicaksono Acked-by: Rafael J. Wysocki Reviewed-by: Sudeep Holla Link: https://lore.kernel.org/r/20220929002834.32664-1-bwicaksono@nvidia.com Signed-off-by: Will Deacon --- drivers/acpi/arm64/Kconfig | 3 +++ 1 file changed, 3 insertions(+) (limited to 'drivers/acpi/arm64/Kconfig') diff --git a/drivers/acpi/arm64/Kconfig b/drivers/acpi/arm64/Kconfig index d4a72835f328..b3ed6212244c 100644 --- a/drivers/acpi/arm64/Kconfig +++ b/drivers/acpi/arm64/Kconfig @@ -18,3 +18,6 @@ config ACPI_AGDI reset command. If set, the kernel parses AGDI table and listens for the command. + +config ACPI_APMT + bool -- cgit