include/dt-bindings/pinctrl/dm814x.h

File Facts

System

Linux kernel

Corpus path

include/dt-bindings/pinctrl/dm814x.h

Extension

.h

Size

1277 bytes

Lines

50

Domain

Repository Root And Misc

Bucket

include

Inferred role

Repository Root And Misc: implementation source

Status

source implementation candidate

Why This File Exists

Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

• Top-level or miscellaneous repository surface. Use this as map coverage unless a later manual pass promotes the file into a deeper subsystem dossier.

Dependency Surface

• dt-bindings/pinctrl/omap.h

Detected Declarations

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

Annotated Snippet

#ifndef _DT_BINDINGS_PINCTRL_DM814X_H
#define _DT_BINDINGS_PINCTRL_DM814X_H

#include <dt-bindings/pinctrl/omap.h>

#undef INPUT_EN
#undef PULL_UP
#undef PULL_ENA

/*
 * Note that dm814x silicon revision 2.1 and older require input enabled
 * (bit 18 set) for all 3.3V I/Os to avoid cumulative hardware damage. For
 * more info, see errata advisory 2.1.87. We leave bit 18 out of
 * function-mask in dm814x.h and rely on the bootloader for it.
 */
#define INPUT_EN		(1 << 18)
#define PULL_UP			(1 << 17)
#define PULL_DISABLE		(1 << 16)

/* update macro depending on INPUT_EN and PULL_ENA */
#undef PIN_OUTPUT
#undef PIN_OUTPUT_PULLUP
#undef PIN_OUTPUT_PULLDOWN
#undef PIN_INPUT
#undef PIN_INPUT_PULLUP
#undef PIN_INPUT_PULLDOWN

#define PIN_OUTPUT		(PULL_DISABLE)
#define PIN_OUTPUT_PULLUP	(PULL_UP)
#define PIN_OUTPUT_PULLDOWN	0
#define PIN_INPUT		(INPUT_EN | PULL_DISABLE)
#define PIN_INPUT_PULLUP	(INPUT_EN | PULL_UP)
#define PIN_INPUT_PULLDOWN	(INPUT_EN)

/* undef non-existing modes */
#undef PIN_OFF_NONE
#undef PIN_OFF_OUTPUT_HIGH
#undef PIN_OFF_OUTPUT_LOW
#undef PIN_OFF_INPUT_PULLUP
#undef PIN_OFF_INPUT_PULLDOWN
#undef PIN_OFF_WAKEUPENABLE

#endif

Annotation

• Immediate include surface: `dt-bindings/pinctrl/omap.h`.
• Atlas domain: Repository Root And Misc / include.
• Implementation status: source implementation candidate.

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.