ufshcd_set_clk_freq(9)

📦 version 7.3.1, in nixpkgs unstable

💖 ufshcd_set_clk_freq — Kernel API Manual, section 9 💖

okay so bestie, we're in the Kernel API Manual (section 9, the kernel-functions girlies ✨) and today's main character is ufshcd_set_clk_freq. She does exactly one thing and she does it iconically: she sets the UFS controller clock frequencies. that's it. that's the vibe. 🎀

✨ NAME ✨

ufshcd_set_clk_freq — set UFS controller clock frequencies 🕰️💅

🌸 SYNOPSIS 🌸

int ufshcd_set_clk_freq (struct ufs_hba *hba , bool scale_up );

like, she takes two things and hands you back an int. no cap. 🦋

🧚 ARGUMENTS 🧚

  • hba — the per adapter instance, aka the UFS host bus adapter we're messing with. she's the whole point, be nice to her 🫶
  • scale_up — a bool, and it's giving "which direction tho?". If True, set max possible frequency; otherwise set low frequency. (the OG page spells it "othewise" — we love a typo queen, but yeah, it means otherwise 🙈)

⭐ RETURN ⭐

  • 0 if successful ✨
  • < 0 upon failure 😭

that's it, that's the whole deal. zero is the slay outcome, negative is the "not me, not today" outcome 💀

🔥 SEE ALSO 🔥

she does NOT come alone — this is a whole friend group, and the source file is ./drivers/ufs/core/ufshcd.c. lineup goes:

like I said. whole friend group. iykyk 💜

and that's the page, bestie 🫶 this one came out of ./drivers/ufs/core, dated October 2026 — go drink some water, your clock frequencies are iconic 💖✨

📦 where this page comes from