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758d638667
Add documentation for the TPDM and TPDA under trace/coresight. Signed-off-by: Mao Jinlong <quic_jinlmao@quicinc.com> Signed-off-by: Suzuki K Poulose <suzuki.poulose@arm.com> Link: https://lore.kernel.org/r/20230117145708.16739-9-quic_jinlmao@quicinc.com
44 lines
1.0 KiB
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44 lines
1.0 KiB
ReStructuredText
.. SPDX-License-Identifier: GPL-2.0
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==============================
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Trace performance monitoring and diagnostics monitor(TPDM).
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==============================
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:Author: Jinlong Mao <quic_jinlmao@quicinc.com>
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:Date: January 2023
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Hardware Description
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--------------------
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TPDM - The trace performance monitoring and diagnostics monitor or TPDM in
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short serves as data collection component for various dataset types.
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The primary use case of the TPDM is to collect data from different data
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sources and send it to a TPDA for packetization, timestamping and funneling.
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Sysfs files and directories
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---------------------------
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Root: ``/sys/bus/coresight/devices/tpdm<N>``
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----
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:File: ``enable_source`` (RW)
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:Notes:
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- > 0 : enable the datasets of TPDM.
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- = 0 : disable the datasets of TPDM.
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:Syntax:
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``echo 1 > enable_source``
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----
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:File: ``integration_test`` (wo)
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:Notes:
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Integration test will generate test data for tpdm.
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:Syntax:
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``echo value > integration_test``
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value - 1 or 2.
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----
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