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| -rw-r--r-- | docs/specs/riscv-iommu.rst | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/docs/specs/riscv-iommu.rst b/docs/specs/riscv-iommu.rst index b1538c9..000c7e1 100644 --- a/docs/specs/riscv-iommu.rst +++ b/docs/specs/riscv-iommu.rst @@ -82,6 +82,8 @@ Several options are available to control the capabilities of the device, namely: - "off" (Out-of-reset translation mode: 'on' for DMA disabled, 'off' for 'BARE' (passthrough)) - "s-stage": enable s-stage support - "g-stage": enable g-stage support +- "hpm-counters": number of hardware performance counters available. Maximum value is 31. + Default value is 31. Use 0 (zero) to disable HPM support riscv-iommu-sys device ---------------------- |