STRUCT ANAND(9)

💖 struct anand(9) 💖

okay so welcome to the Kernel API Manual, bestie — today's main character is struct anand, and its whole personality is "I define the NAND chip related information." that's it, that's the vibe. it's giving ✨ documentation ✨ and honestly? we're obsessed. 🎀

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✨ NAME ✨

struct anand — literally defines the NAND chip related information. no cap, that's the whole job. 👑

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🦋 SYNOPSIS 🦋

here's the glow-up in code form, copied exactly, don't touch a single character or i will cry:

struct anand {
    struct list_head node;
    struct nand_chip chip;
    unsigned int rb;
    unsigned int page_sz;
    unsigned long clk;
    u32 data_iface;
    u32 timings;
    u32 ecc_conf;
    u32 strength;
    u16 raddr_cycles;
    u16 caddr_cycles;
    unsigned int ecc_bits;
    unsigned int ecc_total;
    unsigned int *errloc;
    u8 *hw_ecc;
    struct bch_control *bch;
    int *cs_idx;
    int ncs_idx;
 };

like… she's structured. she's organized. she has range. 💅

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🌸 Members 🌸

okay now the meet-the-cast section, gather round besties 🫶

• node — used to store NAND chips into a list. she's a social queen, she links the whole friend group together. 🔗
• chip — the NAND chip information structure. the whole info dump, iconically. 📋
• rb — ready-busy line. the "are you done yet??" wire. ⏳
• page_sz — register value of the page_sz field to use. the exact value you're plugging in. 📐
• clk — expected clock frequency to use. the tempo, the BPM, the heartbeat of the whole operation. 💓
• data_iface — data interface timing mode to use. pick your mode, bestie. 🎛️
• timings — NV-DDR specific timings to use. very specific, very fancy. ⚡
• ecc_conf — hardware ECC configuration value. the error-correcting config, slay. 🛠️
• strength — register value of the ECC strength. how hard the ECC goes. 💪
• raddr_cycles — row address cycle information. 🧭
• caddr_cycles — column address cycle information. 📍
• ecc_bits — exact number of ECC bits per syndrome. exact, no guesses, periodt. 🔢
• ecc_total — total number of ECC bytes. the whole bag. 🎒
• errloc — array of errors located with soft BCH. the naughty list, basically 😭
• hw_ecc — buffer to store syndromes computed by hardware. hardware did the math, this holds the receipts. 🧾
• bch — BCH structure. just… the BCH structure. iconic in its brevity. 🌈
• cs_idx — array of chip-select for this device, values are indexes of the controller structure gpio_cs array. yes, indexes of the gpio_cs array, we said what we said. 🔎
• ncs_idx — size of the cs_idx array. someone has to keep count. 🧮

fr fr every member above is exactly as documented — nothing added, nothing skipped, no invented lore. i would never. 🙈

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👑 SEE ALSO 👑

go touch some other kernel files, bestie:

• Kernel file ./drivers/mtd/nand/raw/arasan-nand-controller.c
• struct anfc_op(9)
• struct arasan_nfc(9)

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and that's the whole page, mwah 💋 this lil love letter lives in ./drivers/mtd/nand/raw and it's dated October 2026 — so mark your calendar, screenshot it, put it on your story, whatever. bye bestie, go read a struct! 🌟