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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2020-07-26 09:33:25 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2020-07-26 09:33:25 -0700 |
| commit | 1ada9010e578150984039a770c98f41799b30bc4 (patch) | |
| tree | 3da8fb053f026c24c2261904d6f4c20d17246c95 /Documentation | |
| parent | 7f2e231c316591246284b10b008cadfc953f16d3 (diff) | |
| parent | 92d232d176041db5b033dd7b7f7f2cf343f82237 (diff) | |
Merge tag 'char-misc-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc into master
Pull char/misc driver fixes from Greg KH:
"Here are a few small driver fixes for 5.8-rc7
They include:
- habanalabs fixes
- tiny fpga driver fixes
- /dev/mem fixup from previous changes
- interconnect driver fixes
- binder fix
All of these have been in linux-next for a while with no reported
issues"
* tag 'char-misc-5.8-rc7' of git://git.kernel.org/pub/scm/linux/kernel/git/gregkh/char-misc:
interconnect: msm8916: Fix buswidth of pcnoc_s nodes
interconnect: Do not skip aggregation for disabled paths
/dev/mem: Add missing memory barriers for devmem_inode
binder: Don't use mmput() from shrinker function.
habanalabs: prevent possible out-of-bounds array access
fpga: dfl: fix bug in port reset handshake
fpga: dfl: pci: reduce the scope of variable 'ret'
habanalabs: set 4s timeout for message to device CPU
habanalabs: set clock gating per engine
habanalabs: block WREG_BULK packet on PDMA
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-driver-habanalabs | 11 |
1 files changed, 10 insertions, 1 deletions
diff --git a/Documentation/ABI/testing/debugfs-driver-habanalabs b/Documentation/ABI/testing/debugfs-driver-habanalabs index f6d9c2a8d528..2e9ae311e02d 100644 --- a/Documentation/ABI/testing/debugfs-driver-habanalabs +++ b/Documentation/ABI/testing/debugfs-driver-habanalabs @@ -16,7 +16,16 @@ 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 + 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 What: /sys/kernel/debug/habanalabs/hl<n>/command_buffers Date: Jan 2019 |