ENUM ARM_OPP(9)

✨ NAME ✨

okay so bestie, welcome to the Kernel API Manual — this page is literally all about enum arm_opp, which is the ARM OPP states definition 💅 like, the whole vibe is "what operating point is the ARM even on rn?"

🦋 SYNOPSIS 🦋

enum arm_opp {
    ARM_OPP_INIT ,
    ARM_NO_CHANGE ,
    ARM_100_OPP ,
    ARM_50_OPP ,
    ARM_MAX_OPP ,
    ARM_MAX_FREQ100OPP ,
    ARM_EXTCLK

};

no cap, that's the whole enum, go off 👑

🎀 Constants 🎀

okay so here's the breakdown of every single one, don't skip a single one, i'm watching 👀

• ARM_OPP_INIT — the init state, bestie. that's it, that's the description 🫶
• ARM_NO_CHANGE — the ARM operating point is unchanged, so like... nothing's happening, we're literally just vibing 🌸
• ARM_100_OPP — the new ARM operating point is arm100opp ✨
• ARM_50_OPP — the new ARM operating point is arm50opp 💜
• ARM_MAX_OPP — operating point is "max", and yes that means more than 100 🔥
• ARM_MAX_FREQ100OPP — set max opp if available, else 100. lowkey a little "if you can, otherwise fall back" moment 😭
• ARM_EXTCLK — the new ARM operating point is armExtClk 🦋

🌈 SEE ALSO 🌈

the whole friend group, fr fr — first up the kernel file ./include/linux/mfd/db8500-prcmu.h, and then this iconic lineup:

• enum state(9)
• enum ret_state(9)
• enum clk_arm(9)
• enum clk_gen(9)
• enum romcode_write(9)
• enum romcode_read(9)
• enum ap_pwrst(9)
• enum ap_pwrst_trans(9)
• enum hw_acc_state(9)
• enum dvfs_stat(9)
• enum sva_mmdsp_stat(9)
• enum sia_mmdsp_stat(9)
• enum mbox_to_arm_err(9)
• enum sia_sva_pwr_policy(9)
• enum auto_enable(9)
• enum prcmu_power_status(9)
• enum prcmu_wdog_id(9)
• enum ape_opp(9)
• enum ddr_opp(9)
• enum ddr_pwrst(9)
• struct prcmu_auto_pm_config(9)

go read them all, i'll wait 🧚

that's the whole page, bestie, you ate it up 💖

and finally, the cute little sign-off: this one lives in ./include/linux/mfd, dated October 2026, and it's the enum arm_opp(9) page — periodt 🌟💅