tegra210_clock_init(9)

💖 tegra210_clock_init(9) 💖

okay so this is a page from the Kernel API Manual (yes, the kernel has a manual, she's fancy like that) and today's main character is tegra210_clock_init — the Tegra210-specific clock init bestie. let's get into it ✨

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🌸 NAME 🌸

tegra210_clock_init — clock initialization, but make it Tegra210-specific 🎀

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🦋 SYNOPSIS 🦋

void tegra210_clock_init (struct device_node *np );

that's it. that's the whole vibe. no return value, just vibes and clock registration 💅

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🍓 ARGUMENTS 🍓

• np — a struct device_node * pointing at the DT node for the SoC CAR IP block. that's your handed-in pointer, bestie, it's the whole personality of the call 🫶

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✨ DESCRIPTION ✨

so what does she actually do? she registers most of the SoC clocks for the Tegra210 system-on-chip. not all of them — most. we respect a queen who knows her scope 👑

she's intended to be called by the OF init code when a DT node with the string "nvidia,tegra210-car" shows up. that's the bat signal 🦇 the moment that string is spotted, this function gets the call.

and how does the kernel know to do that? she's declared with CLK_OF_DECLARE. iconic mechanism, no notes.

no return value btw — she's void, so there's nothing to check afterwards. she does her thing and leaves. main character exit 🚪✨

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🌈 SEE ALSO 🌈

• the kernel file ./drivers/clk/tegra/clk-tegra210.c — go read the source, iykyk 📖
• tegra210_clock_apply_init_table(9)
• tegra210_car_barrier(9)
• tegra210_clock_assert_dfll_dvco_reset(9)
• tegra210_clock_deassert_dfll_dvco_reset(9)

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and that's the page!! 🎉 mwah 💋

source + version: <purple>./drivers/clk/tegra</purple>, dated <pink>October 2026</pink>, page tegra210_clock_init(9)`. go forth and register those clocks, bestie 💜🧚‍♀️