RK_GRF_GPIO(4)

🌸 NAME 🌸

okay so bestie, meet rk_grf_gpio — the RockChip GPIO_MUTE pin driver 💖. this is rk_grf_gpio(4) from the Kernel Interfaces Manual, section 4, and it's giving very niche-but-iconic kernel energy. not me being obsessed with a single pin, but here we are 🫶.

✨ SYNOPSIS ✨

you enable it with exactly this line, fr fr:

options SOC_ROCKCHIP_rk3328

🦋 DESCRIPTION 🦋

the rk_grf_gpio driver provides a single-pin, output-only gpio(3) unit whose single pin is named GPIO_MUTE 💅. this controls the output of the GPIO_MUTE pin on the SoC. literally just that one pin doing its thing ✨.

this gpio is usually used to control another device on the board, so it is lowkey not usually available for user software — periodt, that's the vibe 🫶.

🔧 HARDWARE 🔧

the rk_grf_gpio driver supports the following GRF GPIO controller:

• rockchip,rk3328-grf-gpio — that's the one, bestie; it ate and left no crumbs, slay 💅🔥

📜 HISTORY 📜

the rk_grf_gpio driver first appeared in FreeBSD 15.0 🌈 — history was made, highkey.

👑 AUTHORS 👑

the rk_grf_gpio driver and manual were written by Stephen Hurd <shurd@freebsd.org> 👑💜. stan.

cute sign-off time: source/version + date footer energy, for the record — Debian, March 18, 2025, and the manual name is RK_GRF_GPIO(4) — iykyk 💖✨