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| author | Oded Gabbay <ogabbay@kernel.org> | 2022-01-05 23:14:45 +0200 |
|---|---|---|
| committer | Oded Gabbay <ogabbay@kernel.org> | 2022-02-28 14:22:01 +0200 |
| commit | 4edb4ffe39c9bdaec50186d0ca583a7ff01143de (patch) | |
| tree | 7af9890329c5cb296436408a5c8d89354f1cdf88 /Documentation | |
| parent | eb85eec858c1a5c11d3a0bff403f6440b05b40dc (diff) | |
| download | linux-4edb4ffe39c9bdaec50186d0ca583a7ff01143de.tar.bz2 | |
habanalabs/gaudi: disable CGM permanently
Due to the need of SynapseAI to configure all TPC engines from a single
QMAN, the driver must disable CGM and never allow the user to enable
it. Otherwise, the configuration of the TPC engines will fail.
Signed-off-by: Oded Gabbay <ogabbay@kernel.org>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-driver-habanalabs | 19 |
1 files changed, 1 insertions, 18 deletions
diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs index 2667cbf940f3..783001a574b3 100644 --- a/Documentation/ABI/testing/debugfs-driver-habanalabs +++ b/Documentation/ABI/testing/debugfs-driver-habanalabs @@ -12,24 +12,7 @@ What: /sys/kernel/debug/habanalabs/hl<n>/clk_gate Date: May 2020 KernelVersion: 5.8 Contact: ogabbay@kernel.org -Description: Allow the root user to disable/enable in runtime the clock - gating mechanism in Gaudi. Due to how Gaudi is built, the - clock gating needs to be disabled in order to access the - registers of the TPC and MME engines. This is sometimes needed - during debug by the user and hence the user needs this option. - The user can supply a bitmask value, each bit represents - a different engine to disable/enable its clock gating feature. - The bitmask is composed of 20 bits: - - ======= ============ - 0 - 7 DMA channels - 8 - 11 MME engines - 12 - 19 TPC engines - ======= ============ - - The bit's location of a specific engine can be determined - using (1 << GAUDI_ENGINE_ID_*). GAUDI_ENGINE_ID_* values - are defined in uapi habanalabs.h file in enum gaudi_engine_id +Description: This setting is now deprecated as clock gating is handled solely by the f/w What: /sys/kernel/debug/habanalabs/hl<n>/command_buffers Date: Jan 2019 |