STRUCT MIPI_DSI_DEVICE(9)

💅 struct mipi_dsi_device(9) — the Kernel API Manual glow-up

okay so bestie, we're in struct mipi_dsi_device(9) and honestly? this one's kind of a big deal ✨ it's the DSI peripheral device struct — like, the whole vibe of a display panel hanging off a DSI bus lives in here. no cap.

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🌸 NAME 🌸

struct mipi_dsi_device — literally the DSI peripheral device, iconic, main character energy 👑

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🎀 SYNOPSIS 🎀

struct mipi_dsi_device {
    struct mipi_dsi_host *host;
    struct device dev;
    bool attached;
    char name[DSI_DEV_NAME_SIZE];
    unsigned int channel;
    unsigned int lanes;
    enum mipi_dsi_pixel_format format;
    unsigned long mode_flags;
    unsigned long hs_rate;
    unsigned long lp_rate;
    struct drm_dsc_config *dsc;
 };

like, that's the whole thing. look at her. so structured. so valid. 🫶

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🦋 Members 🦋

okay let's go member by member, i gotchu:

• host — the DSI host for this peripheral. yes queen, she's got a host 🔥
• dev — the driver model device node for this peripheral. this is the kernel's official little ID card for the thing 💳
• attached — bool bestie, and it tells you the DSI device has been successfully attached. it's the "we're official" flag 💖
• name — DSI peripheral chip type, chillin' in a char name[DSI_DEV_NAME_SIZE] 🎀
• channel — the virtual channel assigned to the peripheral. not a TV channel, but honestly kinda the same energy 📺
• lanes — number of active data lanes. more lanes = more zoomies ⚡
• format — the pixel format for video mode, as an enum mipi_dsi_pixel_format 🌈
• mode_flags — DSI operation mode related flags. flags. as in, unsigned long flags. iykyk 🚩
• hs_rate — maximum lane frequency for high speed mode in hertz. and this is the important bit: this should be set to the real limits of the hardware, and zero is only accepted for legacy drivers. so like, do not just put a 0 in there and call it a day, that's legacy-driver behavior and we don't do that anymore 🙈
• lp_rate — maximum lane frequency for low power mode in hertz. same rules, bestie: set it to the real limits of the hardware, and zero is only accepted for legacy drivers 💀
• dsc — panel/bridge DSC pps payload to be sent. it's a struct drm_dsc_config *, so it's a pointer to the payload, not the payload itself 🧚

ngl the hs_rate/lp_rate ones are the "read the fine print" members. real limits of the hardware. zeros only for legacy drivers. periodt 💅

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💜 SEE ALSO 💜

• Kernel file ./include/drm/drm_mipi_dsi.h
• struct mipi_dsi_msg(9)
• struct mipi_dsi_packet(9)
• struct mipi_dsi_host_ops(9)
• struct mipi_dsi_host(9)
• struct mipi_dsi_device_info(9)
• struct mipi_dsi_multi_context(9)
• mipi_dsi_pixel_format_to_bpp(9)
• enum mipi_dsi_dcs_tear_mode(9)
• mipi_dsi_generic_write_seq_multi(9)
• mipi_dsi_generic_write_var_seq_multi(9)
• mipi_dsi_dcs_write_seq_multi(9)
• mipi_dsi_dcs_write_var_seq_multi(9)
• mipi_dsi_dual(9)
• mipi_dsi_dual_generic_write_seq_multi(9)
• mipi_dsi_dual_dcs_write_seq_multi(9)
• struct mipi_dsi_driver(9)

like, the whole friend group showed up 🫶✨

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⭐ sign-off ⭐

kay so this little love letter to displays came out of ./include/drm, dated October 2026, in the Kernel API Manual 💖 thanks for reading bestie, go set your rates to the real hardware limits and slay 🎀👑