dfll_init(9)

👑 dfll_init(9) 👑

okay so welcome to the Kernel API Manual, bestie 💖 we're doing a whole deep dive on dfll_init, and honestly? it's giving "quiet setup function that actually matters." no cap.

🌸 NAME 🌸

dfll_init — Prepare the DFLL IP block for use ✨

✨ SYNOPSIS ✨

int dfll_init (struct tegra_dfll *td );

🎀 ARGUMENTS 🎀

• td — the DFLL instance, aka the main character struct you're working with 💅

💅 DESCRIPTION 💅

okay so dfll_init() does everything necessary to prepare the DFLL IP block for use. like, all the setup vibes. when it's done, the DFLL is left in DISABLED state — yes, DISABLED, periodt.

it's called by dfll_probe. 🫶

it returns 0 upon success, or passes along the error from whatever function returned it. fr fr, no invented error codes here — it just hands you whatever came back.

🦋 SEE ALSO 🦋

like, go read these too, bestie 👑:

• 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)
• find_lut_index_for_rate(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)
• 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)

xoxo, your kernel bestie 💖 source/version: ./drivers/clk/tegra; date: October 2026 🎀