STRUCT SDHCI_ARASAN_SOC_CTL_MAP(9)

💅 struct sdhci_arasan_soc_ctl_map (Kernel API Manual) 🎀

okay bestie, so this one is a struct, not a function — it's the little map that tells the driver where to find the corecfg registers inside a syscon. the manual name is literally struct sdhc..._soc_ctl_map(9) (yes the header truncates it, that's just how it is, iykyk) and it lives in the Kernel API Manual. let's get into it ✨

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✨ NAME ✨

struct sdhci_arasan_soc_ctl_map — maps stuff in syscon to the corecfg registers 💖

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🌸 SYNOPSIS 🌸

struct sdhci_arasan_soc_ctl_map {
    struct sdhci_arasan_soc_ctl_field       baseclkfreq;
    struct sdhci_arasan_soc_ctl_field       clockmultiplier;
    struct sdhci_arasan_soc_ctl_field       support64b;
    bool hiword_update;
 };

not me copy-pasting the exact spacing... but fr fr, code stays exactly as it is, no cap 🙈

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🦋 Members 🦋

• baseclkfreq — where to find corecfg_baseclkfreq, bestie. that's the spot 👑
• clockmultiplier — where to find corecfg_clockmultiplier. slay, it's right there 💫
• support64b — where to find the SUPPORT64B bit. iconic little flag 🎀
• hiword_update — a bool. if it's true, then you use HIWORD_UPDATE to access the syscon. lowkey important detail ngl 💅

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🌈 Description 🌈

so here's the vibe: it's totally up to the licensee of the Arsan IP block to make these available somewhere if needed. like, that's their job, not ours 🫶

presumably (and yes, "presumably" is doing a lot of work here) these will be scattered somewhere that's accessible via the syscon API. so, y'know, somewhere reachable. main character energy for the syscon API honestly ⭐

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🔥 SEE ALSO 🔥

• Kernel file ./drivers/mmc/host/sdhci-of-arasan.c
• struct sdhci_arasan_soc_ctl_field(9)
• struct sdhci_arasan_clk_ops(9)
• struct sdhci_arasan_clk_data(9)
• struct sdhci_arasan_data(9)
• sdhci_arasan_syscon_write(9)
• sdhci_arasan_suspend(9)
• sdhci_arasan_resume(9)
• sdhci_arasan_sdcardclk_recalc_rate(9)
• sdhci_arasan_sampleclk_recalc_rate(9)
• sdhci_zynqmp_sdcardclk_set_phase(9)
• sdhci_zynqmp_sampleclk_set_phase(9)
• sdhci_versal_sdcardclk_set_phase(9)
• sdhci_versal_sampleclk_set_phase(9)
• sdhci_arasan_update_clockmultiplier(9)
• sdhci_arasan_update_baseclkfreq(9)
• arasan_dt_parse_clk_phases(9)
• sdhci_arasan_register_sdcardclk(9)
• sdhci_arasan_register_sampleclk(9)
• sdhci_arasan_unregister_sdclk(9)
• sdhci_arasan_update_support64b(9)
• sdhci_arasan_register_sdclk(9)

like, that's a whole friend group of references, go read them all, they ate 💜

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and that's the whole page, bestie! this cutie came from ./drivers/mmc/host, dated October 2026, and the manual is struct sdhc..._soc_ctl_map(9) — mwah, go forth and map those corecfg registers 🧚💖