Documentation/ABI/testing/sysfs-bus-coresight-devices-stm

Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-bus-coresight-devices-stm

File Facts

System
Linux kernel
Corpus path
Documentation/ABI/testing/sysfs-bus-coresight-devices-stm
Extension
[no extension]
Size
2446 bytes
Lines
60
Domain
Support Tooling And Documentation
Bucket
Documentation
Inferred role
Support Tooling And Documentation: Documentation
Status
atlas-only

Why This File Exists

Repository support layer: documentation, build tooling, samples, user-space helper tools, generated initramfs support, licenses, and validation utilities.

Dependency Surface

Detected Declarations

Annotated Snippet

What:		/sys/bus/coresight/devices/<memory_map>.stm/enable_source
Date:		April 2016
KernelVersion:	4.7
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Enable/disable tracing on this specific trace macrocell.
		Enabling the trace macrocell implies it has been configured
		properly and a sink has been identified for it.  The path
		of coresight components linking the source to the sink is
		configured and managed automatically by the coresight framework.

What:		/sys/bus/coresight/devices/<memory_map>.stm/hwevent_enable
Date:		April 2016
KernelVersion:	4.7
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Provides access to the HW event enable register, used in
		conjunction with HW event bank select register.

What:		/sys/bus/coresight/devices/<memory_map>.stm/hwevent_select
Date:		April 2016
KernelVersion:	4.7
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Gives access to the HW event block select register
		(STMHEBSR) in order to configure up to 256 channels.  Used in
		conjunction with "hwevent_enable" register as described above.

What:		/sys/bus/coresight/devices/<memory_map>.stm/port_enable
Date:		April 2016
KernelVersion:	4.7
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Provides access to the stimulus port enable register
		(STMSPER).  Used in conjunction with "port_select" described
		below.

What:		/sys/bus/coresight/devices/<memory_map>.stm/port_select
Date:		April 2016
KernelVersion:	4.7
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Used to determine which bank of stimulus port bit in
		register STMSPER (see above) apply to.

What:		/sys/bus/coresight/devices/<memory_map>.stm/status
Date:		April 2016
KernelVersion:	4.7
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(Read) List various control and status registers.  The specific
		layout and content is driver specific.

What:		/sys/bus/coresight/devices/<memory_map>.stm/traceid
Date:		April 2016
KernelVersion:	4.7
Contact:	Mathieu Poirier <mathieu.poirier@linaro.org>
Description:	(RW) Holds the trace ID that will appear in the trace stream
		coming from this trace entity.

What:           /sys/bus/coresight/devices/<memory_map>.stm/label
Date:           Aug 2025
KernelVersion   6.18
Contact:        Mao Jinlong <quic_jinlmao@quicinc.com>
Description:    (Read) Show hardware context information of device.

Annotation

Implementation Notes