find_lut_index_for_rate(9)

🌸 NAME 🌸

find_lut_index_for_rate — determine I2C LUT index for given DFLL rate. bestie, this is find_lut_index_for_rate(9) from the Kernel API Manual, and it's literally here to find that LUT index for a DFLL rate 💅✨

✨ SYNOPSIS ✨

int find_lut_index_for_rate (struct tegra_dfll *td , unsigned long rate
);

🎀 ARGUMENTS 🎀

• td — DFLL instance 🫶
• rate — clock rate ⭐

💅 DESCRIPTION 💅

okay so this function determines the index of an I2C LUT entry for a voltage that approximately produces the given DFLL clock rate. It's used when forcing a value to the integrator during rate changes 🔥

and ngl, if a suitable LUT index is not found, it returns -ENOENT 😭 that's the whole vibe check.

🦋 SEE ALSO 🦋

Kernel file: ./drivers/clk/tegra/clk-dfll.c

• enum dfll_ctrl_mode(9)
• enum dfll_tune_range(9)
• struct dfll_rate_req(9)
• dfll_is_running(9)
• tegra_dfll_runtime_resume(9)
• tegra_dfll_runtime_suspend(9)
• dfll_tune_low(9)
• dfll_scale_dvco_rate(9)
• dfll_set_mode(9)
• dfll_i2c_set_output_enabled(9)
• dfll_pwm_set_output_enabled(9)
• dfll_set_force_output_value(9)
• dfll_set_force_output_enabled(9)
• dfll_force_output(9)
• dfll_load_i2c_lut(9)
• dfll_init_i2c_if(9)
• dfll_init_out_if(9)
• dfll_calculate_rate_request(9)
• dfll_set_frequency_request(9)
• dfll_request_rate(9)
• dfll_disable(9)
• dfll_enable(9)
• dfll_set_open_loop_config(9)
• dfll_lock(9)
• dfll_unlock(9)
• dfll_register_clk(9)
• dfll_unregister_clk(9)
• dfll_calc_monitored_rate(9)
• dfll_read_monitor_rate(9)
• dfll_set_default_params(9)
• dfll_init_clks(9)
• dfll_init(9)
• tegra_dfll_suspend(9)
• tegra_dfll_resume(9)
• dfll_build_i2c_lut(9)
• read_dt_param(9)
• dfll_fetch_i2c_params(9)
• dfll_fetch_common_params(9)
• tegra_dfll_register(9)
• tegra_dfll_unregister(9)

mwah 💖 that's the whole page, bestie. source/version: ./drivers/clk/tegra · date: October 2026 · page title: find_lut_index_for_rate(9) ✨👑