sdhci_arasan_syscon_write(9)

💖 sdhci_arasan_syscon_write(9) 💖

okay bestie, this page is straight out of the Kernel API Manual — and it's giving “tiny helper function with strong boundaries” energy ✨ It writes a value into a field in the sdhci_arasan_soc_ctl registers. Let's get into it 💅

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🌸 NAME 🌸

sdhci_arasan_syscon_write — Write to a field in soc_ctl registers 🦋

🦋 SYNOPSIS 🦋

       int sdhci_arasan_syscon_write (struct sdhci_host *host , const struct
       sdhci_arasan_soc_ctl_field *fld , u32 val );

🎀 ARGUMENTS 🎀

• host — The sdhci_host. That's the host, bestie 🫶
• fld — The field to write to. This is your target 🎯
• val — The value to write. The actual payload 💌

✨ DESCRIPTION ✨

This function allows writing to fields in sdhci_arasan_soc_ctl_map — yes, that exact map, no cap. You give it a field and a value, and it does the write. Periodt 💅

Heads up bestie 🚨: if a field is specified as not available (shift < 0), then this function will silently return an error code. Like, no noise, just an error code back 🙈 But for any other (unexpected) errors, it will be noisy and print errors — so the quiet treatment is only for shift < 0, everything else is loud 📢

🌈 RETURN 🌈

0 on success, and an error value on error. That's it, that's the return vibe 💖

👑 SEE ALSO 👑

Kernel file: ./drivers/mmc/host/sdhci-of-arasan.c — go look, bestie 🧚

• struct sdhci_arasan_soc_ctl_field(9)
• struct sdhci_arasan_soc_ctl_map(9)
• struct sdhci_arasan_clk_ops(9)
• struct sdhci_arasan_clk_data(9)
• struct sdhci_arasan_data(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)

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okay that's the whole page, bestie! source/version: ./drivers/mmc/host; date: October 2026; footer title: sdhci_arasan_syscon_write(9). bye and slay 🫶💅