diff options
| author | Cristian Marussi <cristian.marussi@arm.com> | 2023-01-20 12:23:26 +0000 |
|---|---|---|
| committer | Sudeep Holla <sudeep.holla@arm.com> | 2023-01-20 14:11:38 +0000 |
| commit | 32a55bbdd74e2bb76a76979bc4f37e7e7ebe620d (patch) | |
| tree | bc3f8112eb4fe47b214de65bdd363c56c5af981e /Documentation/ABI/testing/debugfs-scmi-raw | |
| parent | 7860701d1e6e6e048960567d4767d93d693d6faa (diff) | |
firmware: arm_scmi: Clarify raw per-channel ABI documentation
Explain more in detail how the per-channel <m> identifier is chosen.
Suggested-by: Vincent Guittot <vincent.guittot@linaro.org>
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Link: https://lore.kernel.org/r/20230120122326.1932614-1-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
Diffstat (limited to 'Documentation/ABI/testing/debugfs-scmi-raw')
| -rw-r--r-- | Documentation/ABI/testing/debugfs-scmi-raw | 12 |
1 files changed, 10 insertions, 2 deletions
diff --git a/Documentation/ABI/testing/debugfs-scmi-raw b/Documentation/ABI/testing/debugfs-scmi-raw index 5468ec08c084..97678cc9535c 100644 --- a/Documentation/ABI/testing/debugfs-scmi-raw +++ b/Documentation/ABI/testing/debugfs-scmi-raw @@ -80,9 +80,13 @@ Description: SCMI Raw synchronous message injection/snooping facility; write Each write to the entry causes one command request to be built and sent while the replies are read back one message at time (receiving an EOF at each message boundary). + Channel identifier <m> matches the SCMI protocol number which + has been associated with this transport channel in the DT + description, with base protocol number 0x10 being the default + channel for this instance. Note that these per-channel entries rooted at <..>/channels exist only if the transport is configured to have more than - one channel. + one default channel. Users: Debugging, any userspace test suite What: /sys/kernel/debug/scmi/<n>/raw/channels/<m>/message_async @@ -103,7 +107,11 @@ Description: SCMI Raw asynchronous message injection/snooping facility; write Each write to the entry causes one command request to be built and sent while the replies are read back one message at time (receiving an EOF at each message boundary). + Channel identifier <m> matches the SCMI protocol number which + has been associated with this transport channel in the DT + description, with base protocol number 0x10 being the default + channel for this instance. Note that these per-channel entries rooted at <..>/channels exist only if the transport is configured to have more than - one channel. + one default channel. Users: Debugging, any userspace test suite |