mipi_dbi_poweron_reset(9)

✨ mipi_dbi_poweron_reset(9) ✨

okay so bestie, welcome to the Kernel API Manual 🎀 — this one's a lil function from the kernel internals and honestly it's giving "wake up babe, new display driver just dropped" energy. let's get into it 💅

---

🌸 NAME 🌸

mipi_dbi_poweron_reset — literally the MIPI DBI poweron and reset glow-up 🦋

---

⭐ SYNOPSIS ⭐

int mipi_dbi_poweron_reset (struct mipi_dbi_dev *dbidev );

like, that's the whole signature. yes the spacing is a little funky, we don't gatekeep, we copy it exactly 💖

---

💜 ARGUMENTS 💜

• dbidev — the MIPI DBI device structure, aka the main character of this whole operation 👑

---

🔥 DESCRIPTION 🔥

so what does it actually do? no cap, it's a two-for-one:

• it enables the regulator — but only if one is being used 🫶
• and then it does a hardware and software reset ✨

that's it. that's the vibe. poweron plus reset, together, iconic, periodt 💅

---

🌈 RETURN 🌈

• Zero on success 🎉
• or a negative error code 😭 (iykyk, that's the sad path)

---

🦋 SEE ALSO 🦋

the whole squad, fr fr — go look at these too:

• Kernel file ./drivers/gpu/drm/drm_mipi_dbi.c and overview(9) 🍓
• mipi_dbi_command_read(9)
• mipi_dbi_command_buf(9)
• mipi_dbi_buf_copy(9)
• drm_mipi_dbi_crtc_helper_mode_valid(9)
• drm_mipi_dbi_plane_helper_atomic_check(9)
• drm_mipi_dbi_plane_helper_atomic_update(9)
• drm_mipi_dbi_crtc_helper_atomic_check(9)
• drm_mipi_dbi_crtc_helper_atomic_disable(9)
• drm_mipi_dbi_connector_helper_get_modes(9)
• drm_mipi_dbi_dev_init(9)
• mipi_dbi_hw_reset(9)
• mipi_dbi_display_is_on(9)
• mipi_dbi_poweron_conditional_reset(9)
• mipi_dbi_spi_cmd_max_speed(9)
• mipi_dbi_spi_init(9)
• mipi_dbi_spi_transfer(9)
• mipi_dbi_debugfs_init(9)

like... that's a lot of friends. read them all, bestie, they're family 🫶

---

💀 real talk though: everyone here lives under ./drivers/gpu/drm — that's the address, don't lose it 🧚

---

and that's the page!! sign-off time 🎀 this one came from ./drivers/gpu/drm in the Kernel API Manual, dated October 2026 — slay, see u next time, mwah 💖✨