STRUCT V4L2_FWNODE_ENDPOINT(9)

💅 struct v4l2_fwnode_endpoint(9) — the endpoint data structure

okay so bestie, welcome to the Kernel API Manual ✨ — this is the struct v4l2_fwnode_endpoint(9) page, and it's literally the glow-up your media pipeline's endpoint needed. it's giving "one struct to describe how your camera actually talks to the world" 🎀

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🌸 NAME 🌸

struct v4l2_fwnode_endpoint — the endpoint data structure. that's it, that's the vibe 💖

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🦋 SYNOPSIS 🦋

struct v4l2_fwnode_endpoint {
    struct fwnode_endpoint base;
    enum v4l2_mbus_type bus_type;
    struct {
      struct v4l2_mbus_config_parallel parallel;
      struct v4l2_mbus_config_mipi_csi1 mipi_csi1;
      struct v4l2_mbus_config_mipi_csi2 mipi_csi2;
    } bus;
    u64 *link_frequencies;
    unsigned int nr_of_link_frequencies;
 };

no cap, that's the whole shape — copy it character for character and you're golden 🫶

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✨ Members ✨

• base — the fwnode endpoint of the v4l2_fwnode. the origin story, the main character 😌
• bus_type — bus type. which flavour of bus we're on 🚌
• bus — bus configuration data structure. the whole lil container of bus configs 🎁
  • bus.parallel — embedded struct v4l2_mbus_config_parallel. used if the bus is parallel. like, the parallel one, obviously 💫
  • bus.mipi_csi1 — embedded struct v4l2_mbus_config_mipi_csi1. used if the bus is MIPI Alliance's Camera Serial Interface version 1 (MIPI CSI1) or Standard Mobile Imaging Architecture's Compact Camera Port 2 (SMIA CCP2). vintage icon behaviour 💅
  • bus.mipi_csi2 — embedded struct v4l2_mbus_config_mipi_csi2. used if the bus is MIPI Alliance's Camera Serial Interface version 2 (MIPI CSI2). the upgraded era, we love to see it 🔥
• link_frequencies — array of supported link frequencies. all the freqs it can slay at 📶
• nr_of_link_frequencies — number of elements in link_frequenccies array. yes, that typo is in the original — i did not invent it, i simply did not touch it 🙈 (count your freqs, bestie, so nobody buffers past the end of the array 💀)

real talk: link_frequencies is a pointer, so it does not come with the struct — nothing here allocates or frees it for you, that's on whatever code you're calling. i'm just the messenger 🧚

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🌈 SEE ALSO 🌈

go read these, they're all part of the same friend group 👑

• Kernel file ./include/media/v4l2-fwnode.h
• V4L2_FWNODE_PROPERTY_UNSET(9)
• enum v4l2_fwnode_orientation(9)
• struct v4l2_fwnode_device_properties(9)
• struct v4l2_fwnode_link(9)
• enum v4l2_connector_type(9)
• struct v4l2_connector_link(9)
• struct v4l2_fwnode_connector_analog(9)
• struct v4l2_fwnode_connector(9)
• enum v4l2_fwnode_bus_type(9)
• v4l2_fwnode_endpoint_parse(9)
• v4l2_fwnode_endpoint_free(9)
• v4l2_fwnode_endpoint_alloc_parse(9)
• v4l2_fwnode_parse_link(9)
• v4l2_fwnode_put_link(9)
• v4l2_fwnode_connector_free(9)
• v4l2_fwnode_connector_parse(9)
• v4l2_fwnode_connector_add_link(9)
• v4l2_fwnode_device_parse(9)

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okay that's the whole page, you ate that 🍓 mwah 💋

and for the credits-roll moment: this little masterpiece lives in ./include/media, dated October 2026, and it's filed under struct v4l2_fwnode_endpoint(9) — periodt 🌟💜