sdhci_arasan...e_support64b(9)

💖 sdhci_arasan_update_support64b 💖

okay bestie, welcome to the Kernel API Manual entry for sdhci_arasan_update_support64b — the header’s out here being all truncated like sdhci_arasan...e_support64b(9), but we’re here, we’re hydrated, and we’re setting a bit. ✨

🌸 NAME 🌸

sdhci_arasan_update_support64b — Set SUPPORT_64B (64-bit System Bus Support). periodt. 💅

📜 SYNOPSIS 📜

void sdhci_arasan_update_support64b (struct sdhci_host *host , u32 value
);

🫶 ARGUMENTS 🫶

• host — The sdhci_host. the main character receiving the write, lowkey.
• value — The value to write. literally what it says on the tin. 💖

✨ DESCRIPTION ✨

This should be set based on the System Address Bus. no cap, that’s the whole vibe check:

• 0 — the Core supports only 32-bit System Address Bus.
• 1 — the Core supports 64-bit System Address Bus.

🚨 NOTE 🚨

For Keem Bay, it is required to clear this bit. Its default value is 1'b1. Keem Bay does not support 64-bit access. so yeah, clear it — required means required, bestie. 😭

🔥 SEE ALSO 🔥

• Kernel file: ./drivers/mmc/host/sdhci-of-arasan.c
• 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_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_register_sdclk(9)

k bye bestie 💖 this page came from source ./drivers/mmc/host, dated October 2026, with the footer/version tag sdhci_arasan...e_support64b(9). mwah. 🎀🦋