STRUCT RZ_MTU3_CNT(9)

💅 struct rz_mtu3_cnt(9)

okay so bestie, welcome to the Kernel API Manual — today's main character is struct rz_mtu3_cnt, aka the MTU3 counter private data. she's holding all the counter's little secrets and we're about to go through every single one, no skipping, periodt ✨

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🎀 NAME 🎀

struct rz_mtu3_cnt — MTU3 counter private data. that's it, that's the vibe. it's the struct that keeps the counter's private stuff, well… private 😌

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🌸 SYNOPSIS 🌸

here's the whole glow-up, exactly as it lives in the kernel, no edits, no cap:

struct rz_mtu3_cnt {
    struct clk *clk;
    struct mutex lock;
    struct rz_mtu3_channel *ch;
    bool count_is_enabled[RZ_MTU3_MAX_LOGICAL_CNTR_CHANNELS];
    union {
      u16 mtu_16bit_max[RZ_MTU3_MAX_HW_CNTR_CHANNELS];
      u32 mtu_32bit_max;
    };
 };

look at her. absolutely iconic. now let's meet the members one by one 🫶

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👑 Members 👑

• clk — the MTU3 module clock. she keeps time, literally 💅
• lock — a lock that stops concurrent access from messing with the ceiling and the count at the same time. it's giving bodyguard energy fr fr 🔥
• ch — the HW channels for the counters. the whole squad of hardware channels, right here 🦋
• count_is_enabled — the enabled state of the Counter value channel. basically a little "are we on?" checklist per channel ✅
• {unnamed_union} — anonymous. yes, she has no name. mysterious, lowkey main character energy 🙈
• mtu_16bit_max — cache for 16-bit counters 🍓
• mtu_32bit_max — cache for 32-bit counters 🧚

quick reminder bestie: mtu_16bit_max and mtu_32bit_max are chilling inside that anonymous union, so they're sharing the same space — that's just how the struct is written, iykyk 💜

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⭐ SEE ALSO ⭐

• Kernel file ./drivers/counter/rz-mtu3-cnt.c — go read the source, she's right there 💖

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and that's the whole page, bestie!! this lil beauty comes to you from ./drivers/counter, dated October 2026, and she answers to the name struct rz_mtu3_cnt(9). mwah 💋✨🎀