| What: /sys/bus/pci/drivers/intel_vpu/.../npu_busy_time_us |
| Date: May 2024 |
| KernelVersion: 6.11 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Time in microseconds that the device spent executing jobs. The time is |
| counted when and only when there are jobs submitted to firmware. This time |
| can be used to measure the utilization of NPU, either by calculating the |
| difference between two timepoints or monitoring utilization percentage by |
| reading periodically. Recommended read period is 1 second to avoid impact |
| on job submission performance. Read-only. |
| |
| What: /sys/bus/pci/drivers/intel_vpu/.../npu_memory_utilization |
| Date: Jan 2025 |
| KernelVersion: 6.15 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Current NPU memory utilization in bytes. Reports the total size of all |
| resident buffer objects allocated for NPU use. Read-only. |
| |
| What: /sys/bus/pci/drivers/intel_vpu/.../freq/hw_min_freq |
| Date: April 2026 |
| KernelVersion: 7.2 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Minimum frequency in MHz supported by the NPU hardware. This is a |
| hardware capability and cannot be changed. Read-only. |
| |
| What: /sys/bus/pci/drivers/intel_vpu/.../freq/hw_efficient_freq |
| Date: April 2026 |
| KernelVersion: 7.2 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Most efficient operating frequency in MHz for the NPU. This represents |
| the frequency at which the NPU operates most efficiently in terms of power |
| and performance. Read-only. |
| |
| What: /sys/bus/pci/drivers/intel_vpu/.../freq/hw_max_freq |
| Date: April 2026 |
| KernelVersion: 7.2 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Maximum frequency in MHz supported by the NPU hardware. This is a |
| hardware capability and cannot be changed. Read-only. |
| |
| What: /sys/bus/pci/drivers/intel_vpu/.../freq/current_freq |
| Date: April 2026 |
| KernelVersion: 7.2 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Current operating frequency in MHz of the NPU. The value is valid only |
| when the device is active; returns 0 when idle. The actual frequency may |
| be lower than the requested range due to power or thermal constraints. |
| Read-only. |
| |
| What: /sys/bus/pci/drivers/intel_vpu/.../freq/set_min_freq |
| Date: April 2026 |
| KernelVersion: 7.2 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Configured minimum operating frequency in MHz (50XX devices and newer). |
| Values written are clamped to hardware limits (hw_min_freq to hw_max_freq). |
| If set_min_freq exceeds set_max_freq, the driver clamps set_min_freq to |
| set_max_freq when selecting the operating frequency. Read-write. |
| |
| What: /sys/bus/pci/drivers/intel_vpu/.../freq/set_max_freq |
| Date: April 2026 |
| KernelVersion: 7.2 |
| Contact: dri-devel@lists.freedesktop.org |
| Description: Configured maximum operating frequency in MHz (50XX devices and newer). |
| Values written are clamped to hardware limits (hw_min_freq to hw_max_freq). |
| Read-write. |
