mmc_regulator_set_ocr(9)

Bestie, welcome to mmc_regulator_set_ocr(9) — this is the Kernel API Manual page, and we're folding that manual name in right here so nobody has to copy the header line. Periodt. 💅✨

✨ NAME ✨

mmc_regulator_set_ocr — set regulator to match host->ios voltage 🎀

🌸 SYNOPSIS 🌸

int mmc_regulator_set_ocr (struct mmc_host *mmc , struct regulator
       *supply , unsigned short vdd_bit );

💖 ARGUMENTS 💖

Here's the cast, no cap:

• mmc — the host to regulate 👑
• supply — regulator to use 🔌
• vdd_bit — zero for power off, else a bit number (host->ios.vdd) ⚡

🦋 DESCRIPTION 🦋

Returns zero on success, else negative errno. That's literally it — success is a cute little zero, and failure throws you a negative errno. 😭

MMC host drivers may use this to enable or disable a regulator using a particular supply voltage. This would normally be called from the set_ios method. It's giving power-management main character energy, fr fr. 🔥

🌈 SEE ALSO 🌈

Go hang out with these other pages, iykyk:

• Kernel file ./drivers/mmc/core/regulator.c 📁
• mmc_ocrbitnum_to_vdd(9)
• mmc_regulator_get_ocrmask(9)
• mmc_regulator_set_vqmmc(9)
• mmc_regulator_set_vqmmc2(9)
• mmc_regulator_register_undervoltage_notifier(9)
• mmc_regulator_unregister_undervoltage_notifier(9)
• mmc_regulator_get_supply(9)
• mmc_regulator_enable_vqmmc(9)
• mmc_regulator_disable_vqmmc(9)

Cute sign-off time 🫶: this page's source/version tag is ./drivers/mmc/core, and the date on it is October 2026. Bye bestie, go regulate something iconic 💜🧚⭐