omap4430_phy_power_down(9)

🎀 omap4430_phy_power_down(9) 🎀

okay so this page is from the Kernel API Manual, and it’s giving “tiny kernel helper with one very specific job.” bestie, it’s literally about disabling a PHY during early init. slay. 💅

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💖 NAME 💖

omap4430_phy_power_down - disable MUSB PHY during early init

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✨ SYNOPSIS ✨

int omap4430_phy_power_down (void );

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🎀 ARGUMENTS 🎀

• void — no arguments. literally none, bestie. 🫶

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🦋 DESCRIPTION 🦋

okay so here’s the vibe: the OMAP4 MUSB PHY module is enabled by default on reset — iconic for it, but highkey a problem. if it’s not disabled by SW, it will prevent core retention.

lowkey important: that core-retention thing is the whole reason this function exists. not disabling it = not the move. 😭

later on, the USB driver will enable this, once and if the driver needs it. periodt. 🔥

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🌈 SEE ALSO 🌈

• Kernel file ./arch/arm/mach-omap2/omap_phy_internal.c — that’s the spot, iykyk. 🫶✨

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xoxo, your girl 💅 — this page comes from source/version ./arch/arm/mach-omap2 and is dated October 2026. periodt. 🎀💖