STRUCT OMAP_HWMOD_OMAP4_PRCM(9)

👑 struct omap_hwmod_omap4_prcm(9) — the Kernel API Manual, but make it make sense 💅

okay bestie, so this is a page straight outta the Kernel API Manual, and it's all about struct omap_hwmod_omap4_prcm — the OMAP4-specific PRCM data situation. ngl the header on this thing is literally struct omap_...d_omap4_prcm(9) and the manual name is right there in the corner, so now you know. let's get into it 🫶

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🌸 NAME 🌸

struct omap_hwmod_omap4_prcm — OMAP4-specific PRCM data. that's the whole vibe. iconic, concise, we love her 💖

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✨ SYNOPSIS ✨

here's the whole struct, character for character, no cap:

struct omap_hwmod_omap4_prcm {
    u16 clkctrl_offs;
    u16 rstctrl_offs;
    u16 rstst_offs;
    u16 context_offs;
    u32 lostcontext_mask;
    u8 submodule_wkdep_bit;
    u8 modulemode;
    u8 flags;
    int context_lost_counter;
 };

she's got range 💅 look at all those fields.

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🎀 Members 🎀

okay so let's meet the cast, one field at a time:

• clkctrl_offs — the offset of the PRCM clock control register. clock stuff? offset? she's got the coordinates ⭐
• rstctrl_offs — the offset of the XXX_RSTCTRL register, which lives in the PRM. yes, literally XXX_RSTCTRL, that's the name, i don't make the rules 🌈
• context_offs — the offset of the RM_*_CONTEXT register. context queen 👑
• lostcontext_mask — a bitmask for picking which bits you want out of that RM_*_CONTEXT register. selective, as she should be 🦋
• submodule_wkdep_bit — the bit shift of the WKDEP range. it's giving very specific energy and honestly? slay ✨
• modulemode — the allowable modulemodes. all lowercase, very chill, very "we don't gatekeep modes here" 🍓
• flags — the PRCM register capabilities for this IP block. the receipts, basically 🎀
• context_lost_counter — the count of module level context lost 😭 tragic but someone's gotta keep track fr fr

side note bestie: rstst_offs is chillin' right there in the struct up top, but this page does not describe it. not me noticing 👀 i'm just reporting what's on the page, don't come for me 💀

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🧚 Description 🧚

okay so here's the important part, listen up:

if lostcontext_mask is not defined, the context loss check code just uses the whole register without any masking. no filter, raw dogging the register, main character energy.

lostcontext_mask should only be defined in the cases where the context_offs register is shared by two or more hwmods. that's it, that's the rule. don't be out here defining masks for no reason, it's not the vibe 🙈

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💜 SEE ALSO 💜

go read these next, bestie, they're all in the family:

• Kernel file ./arch/arm/mach-omap2/omap_hwmod.h struct
• omap_hwmod_rst_info(9)
• struct omap_hwmod_opt_clk(9)
• struct omap_hwmod_omap2_firewall(9)
• struct omap_hwmod_ocp_if(9)
• struct omap_hwmod_class_sysconfig(9)
• struct omap_hwmod_omap2_prcm(9)
• struct omap_hwmod_class(9)
• struct omap_hwmod(9)

iykyk 🔥

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and that's the whole page, bestie!! 🎉 this one came from ./arch/arm/mach-omap2, version 9 of the manual, dated October 2026 — shoutout to whoever wrote it, and to you for reading the whole thing. mwah 💋 periodt. 🫶✨