pf9453_regul...delay_regmap(9)

💅 pf9453_regul...delay_regmap(9) — the Kernel API Manual, bestie edition

okay so this is a page from the Kernel API Manual (yes, the manual name is literally pf9453_regul...delay_regmap(9), they truncated it with dots, iconic of them honestly) and today we're learning about ramp delays. stay with me, it's actually cute 🎀

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✨ NAME ✨

pf9453_regulator_set_ramp_delay_regmap — set the ramp delay, but make it for the regmap girlies 💖

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🌸 SYNOPSIS 🌸

int pf9453_regulator_set_ramp_delay_regmap (struct regulator_dev *rdev ,
int ramp_delay );

like, that's the whole signature. two args. no drama. 🦋

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🫶 ARGUMENTS 🫶

• rdev — the regulator we're operating on. it's the regulator. main character energy, obviously 👑
• ramp_delay — the desired ramp delay value, in microseconds. yes, microseconds, not milliseconds, do not come for me 🙈

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💅 DESCRIPTION 💅

so here's the vibe: regulators that use regmap for their register I/O can just set the ramp_reg and ramp_mask fields in their descriptor, and then use this function as their set_ramp_delay operation. that's it. that's the whole flex. it saves you some code, which is honestly such a slay ✨

lowkey the whole point is you don't have to write your own ramp delay handler. the descriptor fields do the work, this function shows up, does its thing, leaves. periodt. 💀

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🔥 RETURN 🔥

0 on success, or a negative errno if things went sideways. so like, check it. don't just assume. ngl 😭

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🌈 SEE ALSO 🌈

• Kernel file ./drivers/regulator/pf9453-regulator.c — go read it, it's giving source of truth 🍓
• pf9453_regulator_enable_regmap(9)
• pf9453_regulator_disable_regmap(9)
• pf9453_regulator_set_voltage_sel_regmap(9)

all the regmap siblings, fr fr 🧚

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and that's the page!! mwah 💜 it lives over in ./drivers/regulator, dated October 2026, and answers to the name pf9453_regul...delay_regmap(9) — ok bye bestie, go set some ramp delays 🎀⭐