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Linux kernel mirror (for testing)
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kernel
os
linux
firmware: arm_scmi: Add debugfs ABI documentation for common entries
Add description of the debugfs SCMI common ABI.
Signed-off-by: Cristian Marussi <cristian.marussi@arm.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Vincent Guittot <vincent.guittot@linaro.org>
Link: https://lore.kernel.org/r/20230118121426.492864-12-cristian.marussi@arm.com
Signed-off-by: Sudeep Holla <sudeep.holla@arm.com>
authored by
Cristian Marussi
and committed by
Sudeep Holla
0f62ed00
c3d4aed7
+70
+70
Documentation/ABI/testing/debugfs-scmi
+70
Documentation/ABI/testing/debugfs-scmi
···
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What: /sys/kernel/debug/scmi/<n>/instance_name
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: The name of the underlying SCMI instance <n> described by
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all the debugfs accessors rooted at /sys/kernel/debug/scmi/<n>,
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expressed as the full name of the top DT SCMI node under which
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this SCMI instance is rooted.
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Users: Debugging, any userspace test suite
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What: /sys/kernel/debug/scmi/<n>/atomic_threshold_us
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: An optional time value, expressed in microseconds, representing,
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on this SCMI instance <n>, the threshold above which any SCMI
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command, advertised to have an higher-than-threshold execution
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latency, should not be considered for atomic mode of operation,
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even if requested.
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Users: Debugging, any userspace test suite
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What: /sys/kernel/debug/scmi/<n>/transport/type
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: A string representing the type of transport configured for this
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SCMI instance <n>.
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Users: Debugging, any userspace test suite
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What: /sys/kernel/debug/scmi/<n>/transport/is_atomic
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: A boolean stating if the transport configured on the underlying
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SCMI instance <n> is capable of atomic mode of operation.
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Users: Debugging, any userspace test suite
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What: /sys/kernel/debug/scmi/<n>/transport/max_rx_timeout_ms
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: Timeout in milliseconds allowed for SCMI synchronous replies
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for the currently configured SCMI transport for instance <n>.
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Users: Debugging, any userspace test suite
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What: /sys/kernel/debug/scmi/<n>/transport/max_msg_size
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: Max message size of allowed SCMI messages for the currently
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configured SCMI transport for instance <n>.
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Users: Debugging, any userspace test suite
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What: /sys/kernel/debug/scmi/<n>/transport/tx_max_msg
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: Max number of concurrently allowed in-flight SCMI messages for
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the currently configured SCMI transport for instance <n> on the
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TX channels.
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Users: Debugging, any userspace test suite
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What: /sys/kernel/debug/scmi/<n>/transport/rx_max_msg
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Date: March 2023
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KernelVersion: 6.3
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Contact: cristian.marussi@arm.com
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Description: Max number of concurrently allowed in-flight SCMI messages for
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the currently configured SCMI transport for instance <n> on the
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RX channels.
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Users: Debugging, any userspace test suite