sifive_prci_...el_use_hfclk(9)

💅 sifive_prci_coreclksel_use_hfclk(9) — Kernel API Manual 💅

okay bestie, welcome to the Kernel API Manual corner of the group chat 💖 this one is all about flipping the CORECLK mux over to HFCLK. short king of a function, but lowkey important. let’s get into it ✨

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🌸 NAME 🌸

sifive_prci_coreclksel_use_hfclk — switch the CORECLK mux to output HFCLK 🎀

🦋 SYNOPSIS 🦋

void sifive_prci_coreclksel_use_hfclk (struct __prci_data *pd );

💜 ARGUMENTS 💜

• pd — a struct __prci_data * for the PRCI that contains the CORECLK mux reg. yes, that exact PRCI. don’t hand it some random one, bestie 😭

✨ DESCRIPTION ✨

Switch the CORECLK mux to the HFCLK input source. then? return once complete. that’s it. that’s the whole vibe 💅 no cap, no extra steps, just mux-switching and bouncing ✨

🫶 CONTEXT 🫶

Any context. literally any 💖

⚠️ but bestie, the caller must prevent concurrent changes to the PRCI_CORECLKSEL_OFFSET register. this is not a drill. keep that register from getting jumped by other callers 🙈

🔥 SEE ALSO 🔥

Kernel file: ./drivers/clk/sifive/sifive-prci.c

• __prci_readl(9)
• __prci_wrpll_unpack(9)
• __prci_wrpll_pack(9)
• __prci_wrpll_read_cfg0(9)
• __prci_wrpll_write_cfg0(9)
• __prci_wrpll_write_cfg1(9)
• sifive_prci_coreclksel_use_corepll(9)
• sifive_prci_coreclksel_use_final_corepll(9)
• sifive_prci_corepllsel_use_dvfscorepll(9)
• sifive_prci_corepllsel_use_corepll(9)
• sifive_prci_hfpclkpllsel_use_hfclk(9)
• sifive_prci_hfpclkpllsel_use_hfpclkpll(9)
• __prci_register_clocks(9)
• sifive_prci_probe(9)

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mwah 💋 catch u later — signed, the sifive_prci_...el_use_hfclk(9) girlie 🎀 source/version: ./drivers/clk/sifive · October 2026 · you’re welcome, ily 🫶✨