dfll_i2c_set_output_enabled(9)

💅 dfll_i2c_set_output_enabled(9) 💅

okay so bestie, welcome to the Kernel API Manual — we're literally in the kernel source, section 9, and this little function is about to be your new fave. no cap. 🫶

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🌸 NAME 🌸

dfll_i2c_set_output_enabled — the function that turns your I2C PMIC voltage requests on or off. that's it, that's the vibe check. ✨

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🎀 SYNOPSIS 🎀

int dfll_i2c_set_output_enabled (struct tegra_dfll *td , bool enable );

it returns an int, she takes a struct tegra_dfll * and a bool, and honestly? iconic signature. 💅

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🦋 ARGUMENTS 🦋

• td — the DFLL instance. your main character struct, fr fr. 👑
• enable — a bool that says whether we're enabling or disabling the I2C voltage requests. yes/no energy. 🌈

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💖 DESCRIPTION 💖

so here's the tea: this sets the master enable control for I2C control value updates. ✨

and if you disable it? then I2C control messages are inhibited — like, fully blocked — regardless of the DFLL mode. doesn't matter what mode you're in, bestie, those messages are not getting through. 😭

lowkey important: this is the master switch, so if it's off, everything downstream is off too. 💀

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🔥 SEE ALSO 🔥

the kernel file ./drivers/clk/tegra/clk-dfll.c — and the whole friend group, in order:

• 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_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)
• 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)

like, the whole squad. go read them, iykyk. 📚💜

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and that's the page, bestie! 🎀 one last thing — this manual page lives at ./drivers/clk/tegra, it's dated October 2026, and yeah, the header/footer both say dfll_i2c_set_output_enabled(9) because that's just how manpages roll. mwah 💋✨