Documentation/ABI/testing/sysfs-bus-iio-timer-stm32

File Facts

System

Linux kernel

Corpus path

Documentation/ABI/testing/sysfs-bus-iio-timer-stm32

Extension

[no extension]

Size

4636 bytes

Lines

144

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.

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

Dependency Surface

• No C-style include directives detected by the generator.

Detected Declarations

• No top-level syscall, struct, function, initcall, or export declaration detected by the generator.

Annotated Snippet

What:		/sys/bus/iio/devices/triggerX/master_mode_available
KernelVersion:	4.11
Contact:	benjamin.gaignard@st.com
Description:
		Reading returns the list possible master modes which are:


		- "reset"
				The UG bit from the TIMx_EGR register is
				used as trigger output (TRGO).
		- "enable"
				The Counter Enable signal CNT_EN is used
				as trigger output.
		- "update"
				The update event is selected as trigger output.
				For instance a master timer can then be used
				as a prescaler for a slave timer.
		- "compare_pulse"
				The trigger output send a positive pulse
				when the CC1IF flag is to be set.
		- "OC1REF"
				OC1REF signal is used as trigger output.
		- "OC2REF"
				OC2REF signal is used as trigger output.
		- "OC3REF"
				OC3REF signal is used as trigger output.
		- "OC4REF"
				OC4REF signal is used as trigger output.

		Additional modes (on TRGO2 only):

		- "OC5REF"
				OC5REF signal is used as trigger output.
		- "OC6REF"
				OC6REF signal is used as trigger output.
		- "compare_pulse_OC4REF":
				OC4REF rising or falling edges generate pulses.
		- "compare_pulse_OC6REF":
				OC6REF rising or falling edges generate pulses.
		- "compare_pulse_OC4REF_r_or_OC6REF_r":
				OC4REF or OC6REF rising edges generate pulses.
		- "compare_pulse_OC4REF_r_or_OC6REF_f":
				OC4REF rising or OC6REF falling edges generate
				pulses.
		- "compare_pulse_OC5REF_r_or_OC6REF_r":
				OC5REF or OC6REF rising edges generate pulses.
		- "compare_pulse_OC5REF_r_or_OC6REF_f":
				OC5REF rising or OC6REF falling edges generate
				pulses.

		::

		  +-----------+   +-------------+            +---------+
		  | Prescaler +-> | Counter     |        +-> | Master  | TRGO(2)
		  +-----------+   +--+--------+-+        |-> | Control +-->
		                     |        |          ||  +---------+
		                  +--v--------+-+ OCxREF ||  +---------+
		                  | Chx compare +----------> | Output  | ChX
		                  +-----------+-+         |  | Control +-->
		                        .     |           |  +---------+
		                        .     |           |    .
		                  +-----------v-+ OC6REF  |    .
		                  | Ch6 compare +---------+>
		                  +-------------+

		Example with: "compare_pulse_OC4REF_r_or_OC6REF_r"::

		                  X
		                X   X
		              X .   . X

Annotation

• Atlas domain: Support Tooling And Documentation / Documentation.
• Implementation status: atlas-only.

Implementation Notes

• This generated page is the file-by-file coverage layer; curated subsystem chapters should link here when they synthesize a multi-file control flow.
• Core OS pages should be promoted from atlas-only to deep-reviewed when they explain data structures, invariants, locking, lifecycle, and C implementation snippets.
• Driver-family pages are intentionally pattern-oriented unless they are part of the selected PCIe/NVMe representative device path.