drivers/clk/stm32/clk-stm32mp1.c

File Facts

System

Linux kernel

Corpus path

drivers/clk/stm32/clk-stm32mp1.c

Extension

.c

Size

61359 bytes

Lines

2368

Domain

Driver Families

Bucket

drivers/clk

Inferred role

Driver Families: exported/initcall integration point

Status

integration implementation candidate

Why This File Exists

Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.

• Repeatable hardware-adapter layer. Deep compatibility for every driver is out of scope; this atlas records patterns, probe lifecycles, bus glue, IRQ/DMA usage, and links back to core abstractions.
• Exports symbols or registers init work; inspect boot/module ordering and who consumes the exported contract.
• Uses kernel synchronization; read lock ordering, sleepability, and interrupt context assumptions before translating.
• Allocates kernel memory; connect allocation flags and lifetime to context constraints.
• Defines or uses C structs; map object ownership, embedded links, reference counts, and lock ownership.

Dependency Surface

• linux/clk.h
• linux/clk-provider.h
• linux/delay.h
• linux/err.h
• linux/io.h
• linux/module.h
• linux/of.h
• linux/of_address.h
• linux/platform_device.h
• linux/reset-controller.h
• linux/slab.h
• linux/spinlock.h
• dt-bindings/clock/stm32mp1-clks.h
• reset-stm32.h

Detected Declarations

• struct stm32_mmux
• struct stm32_clk_mmux
• struct stm32_mgate
• struct stm32_clk_mgate
• struct clock_config
• struct gate_cfg
• struct fixed_factor_cfg
• struct div_cfg
• struct mux_cfg
• struct stm32_gate_cfg
• struct stm32_div_cfg
• struct stm32_mux_cfg
• struct stm32_composite_cfg
• struct stm32_pll_obj
• struct timer_cker
• struct stm32_pll_cfg
• struct stm32_cktim_cfg
• struct stm32_rcc_match_data
• function _clk_hw_register_gate
• function _clk_hw_register_fixed_factor
• function _clk_hw_register_divider_table
• function _clk_hw_register_mux
• function mp1_gate_clk_enable
• function mp1_gate_clk_disable
• function clk_stm32_register_gate_ops
• function clk_stm32_register_composite
• function mp1_mgate_clk_enable
• function mp1_mgate_clk_disable
• function clk_mmux_get_parent
• function clk_mmux_set_parent
• function __pll_is_enabled
• function pll_enable
• function pll_disable
• function pll_frac_val
• function pll_recalc_rate
• function pll_is_enabled
• function pll_get_parent
• function __bestmult
• function timer_ker_determine_rate
• function timer_ker_set_rate
• function timer_ker_recalc_rate
• function clk_divider_rtc_recalc_rate
• function clk_divider_rtc_set_rate
• function clk_divider_rtc_determine_rate
• function _clk_stm32_register_gate
• function _clk_stm32_register_composite
• function GATE_MP1
• function stm32_check_security

Annotated Snippet

core_initcall(stm32mp1_clocks_init);

Annotation

• Immediate include surface: `linux/clk.h`, `linux/clk-provider.h`, `linux/delay.h`, `linux/err.h`, `linux/io.h`, `linux/module.h`, `linux/of.h`, `linux/of_address.h`.
• Detected declarations: `struct stm32_mmux`, `struct stm32_clk_mmux`, `struct stm32_mgate`, `struct stm32_clk_mgate`, `struct clock_config`, `struct gate_cfg`, `struct fixed_factor_cfg`, `struct div_cfg`, `struct mux_cfg`, `struct stm32_gate_cfg`.
• Atlas domain: Driver Families / drivers/clk.
• Implementation status: integration implementation candidate.
• Synchronization appears in or near this file; preserve lock ordering, sleepability, and interrupt-context constraints.

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.