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| author | Mario Limonciello <mario.limonciello@amd.com> | 2022-09-14 17:18:50 +0300 |
|---|---|---|
| committer | Hans de Goede <hdegoede@redhat.com> | 2022-09-19 14:48:38 +0300 |
| commit | 7f1ea75d499a5e3a6f593da0a87096f584752750 (patch) | |
| tree | 991a2639a0fb40a84610a4e380b0d5ff2b7b3d57 /Documentation/ABI | |
| parent | 00b1829294b7c88ecba92c661fbe6fe347b364d2 (diff) | |
| download | linux-7f1ea75d499a5e3a6f593da0a87096f584752750.tar.xz | |
platform/x86/amd: pmc: Add sysfs files for SMU
The CPU/APU SMU FW version and program is currently discoverable by
turning on dynamic debugging or examining debugfs for the amdgpu
driver. To make this more discoverable, create a dedicated sysfs
file for it that userspace can parse without debugging enabled.
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Link: https://lore.kernel.org/r/20220914141850.259-1-mario.limonciello@amd.com
Reviewed-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Diffstat (limited to 'Documentation/ABI')
| -rw-r--r-- | Documentation/ABI/testing/sysfs-amd-pmc | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/ABI/testing/sysfs-amd-pmc b/Documentation/ABI/testing/sysfs-amd-pmc new file mode 100644 index 000000000000..c421b72844f1 --- /dev/null +++ b/Documentation/ABI/testing/sysfs-amd-pmc @@ -0,0 +1,13 @@ +What: /sys/bus/platform/drivers/amd_pmc/*/smu_fw_version +Date: October 2022 +Contact: Mario Limonciello <mario.limonciello@amd.com> +Description: Reading this file reports the version of the firmware loaded to + System Management Unit (SMU) contained in AMD CPUs and + APUs. + +What: /sys/bus/platform/drivers/amd_pmc/*/smu_program +Date: October 2022 +Contact: Mario Limonciello <mario.limonciello@amd.com> +Description: Reading this file reports the program corresponding to the SMU + firmware version. The program field is used to disambiguate two + APU/CPU models that can share the same firmware binary. |