omap2_dpll_determine_rate(9)

🎀 NAME 🎀

omap2_dpll_determine_rate — round a target rate for an OMAP DPLL.

okay bestie, welcome to the Kernel API Manual page for omap2_dpll_determine_rate(9) ✨ this is literally the function that rounds a target rate for an OMAP DPLL, and it's about to make clock math make sense. no cap 🫶

🌸 SYNOPSIS 🌸

int omap2_dpll_determine_rate (struct clk_hw *hw , struct
       clk_rate_request *req );

💅 ARGUMENTS 💅

• hw — a struct clk_hw containing the struct clk * for a DPLL. this is your DPLL wrapper, bestie 🎀
• req — the rate request. yep, that's the ask 💌

🦋 DESCRIPTION 🦋

okay so here's the vibe: you give this function a DPLL and a desired target rate, and it rounds that target rate to a possible, programmable rate for this DPLL. it's giving “let's make this number actually work” energy 🔥

it attempts to select the minimum possible n. then it stores the computed (m, n) in the DPLL's dpll_data structure, so set_rate will not need to call this (expensive) function again. yes bestie, it's caching the math so future-you doesn't have to pay the expensive-function tax again 😭💸

the return is int: -EINVAL if the target rate cannot be rounded, or the rounded rate upon success. so either “nope, can't round that” or “here's your rounded rate, periodt” 💅

🔍 SEE ALSO 🔍

• Kernel file ./drivers/clk/ti/clkt_dpll.c
• _omap2_dpll_is_in_bypass(9)
• omap2_get_dpll_rate(9)

okay that's the whole page, bestie 🫶 this one lives under ./drivers/clk/ti, dated October 2026, and the footer vibe is omap2_dpll_determine_rate(9) from the Kernel API Manual — iconic, honestly ✨👑