STRUCT MHU_DB_CHANNEL(9)

💖 NAME 💖

okay so bestie, this is struct mhu_db_channel(9) from the Kernel API Manual — aka the ARM MHU Mailbox allocated channel information struct. It's giving “one allocated channel, all the deets,” and honestly? iconic.

✨ SYNOPSIS ✨

       struct mhu_db_channel {
           struct arm_mhu *mhu;
           unsigned int pchan;
           unsigned int doorbell;
        };

🎀 Members 🎀

• mhu — pointer to the parent mailbox device. Your main-character pointer, fr.
• pchan — the physical channel within which this doorbell resides in. Yes bestie, that's the exact wording — we're not editing the lore.
• doorbell — the doorbell number pertaining to this channel. Ding dong, it's giving channel-specific.

🌈 SEE ALSO 🌈

• Kernel file ./drivers/mailbox/arm_mhu_db.c — go read it, iykyk.

💌 source/version: ./drivers/mailbox · date: October 2026 · page: struct mhu_db_channel(9) — mwah, bye bestie 🫶