Documentation/ABI/testing/sysfs-driver-fsi-master-gpio
Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-driver-fsi-master-gpio
File Facts
- System
- Linux kernel
- Corpus path
Documentation/ABI/testing/sysfs-driver-fsi-master-gpio- Extension
[no extension]- Size
- 433 bytes
- Lines
- 11
- 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/platform/devices/[..]/fsi-master-gpio/external_mode
Date: Feb 2018
KernelVersion: 4.17
Contact: jk@ozlabs.org
Description:
Controls access arbitration for GPIO-based FSI master. A
value of 0 (the default) sets normal mode, where the
driver performs FSI bus transactions, 1 sets external mode,
where the FSI bus is driven externally (for example, by
a debug device).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.