Documentation/ABI/testing/sysfs-class-spi-eeprom
Source file repositories/reference/linux-study-clean/Documentation/ABI/testing/sysfs-class-spi-eeprom
File Facts
- System
- Linux kernel
- Corpus path
Documentation/ABI/testing/sysfs-class-spi-eeprom- Extension
[no extension]- Size
- 1033 bytes
- Lines
- 31
- 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/class/spi_master/spi<bus>/spi<bus>.<dev>/fram
Date: June 2021
KernelVersion: 5.14
Contact: Jiri Prchal <jiri.prchal@aksignal.cz>
Description:
Contains the FRAM binary data. Same as EEPROM, just another file
name to indicate that it employs ferroelectric process.
It performs write operations at bus speed - no write delays.
What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/sernum
Date: May 2021
KernelVersion: 5.14
Contact: Jiri Prchal <jiri.prchal@aksignal.cz>
Description:
Contains the serial number of the Cypress FRAM (FM25VN) if it is
present. It will be displayed as a 8 byte hex string, as read
from the device.
This is a read-only attribute.
What: /sys/class/spi_master/spi<bus>/spi<bus>.<dev>/jedec_id
Date: January 2026
KernelVersion: 6.19
Contact: Patrick Wicki <patrick.wicki@siemens.com>
Description:
Contains the raw JEDEC ID bytes returned by the RDID (0x9f) command. The
bytes are exposed as a hex string in big-endian order as read from the
device.
This is a read-only attribute.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.