of_property_read_u16_index(9)

📦 version 7.3.1, in nixpkgs unstable

🌸 NAME 🌸

of_property_read_u16_index — find and read a u16 from a multi-value property. 💖

okay bestie, welcome to the of_property_read_u16_index(9) page! this is the Kernel API Manual corner of the group chat, section 9 and all — stay hydrated, we're reading device-tree properties today 🫶

✨ SYNOPSIS ✨

the signature, untouched and iconic:

int of_property_read_u16_index (const struct device_node *np , const
char *propname , u32 index , u16 *out_value );

🎀 ARGUMENTS 🎀

okay so here's who's who in this function's little friend group:

  • np — the device node from which the property value is to be read. think of it as the tree we're snooping in 🌳
  • propname — name of the property to be searched. the property name we're looking for, iykyk 🔎
  • index — index of the u16 in the list of values. which 16-bit value you want from the list, bestie 🎯
  • out_value — pointer to return value, modified only if no error. it's where the value goes, and it does not get touched if there's an error 💅

🦋 DESCRIPTION 🦋

search for a property in a device node and read the nth 16-bit value from it. literally that's the whole mission ✨

the out_value is modified only if a valid u16 value can be decoded. no valid decode? no touch. periodt. 💖

💫 RETURN 💫

vibe check on what comes back:

  • 0 — success, we ate ✅
  • -EINVAL — the property does not exist 💀
  • -ENODATA — the property does not have a value 🫠
  • -EOVERFLOW — the property data isn't large enough 😭

🌈 SEE ALSO 🌈

Kernel file: ./drivers/of/property.c — and the whole friend group is:

mwah 💋 — this page's source/version is ./drivers/of, dated October 2026. now go read that 16-bit value and slay, bestie 🫶✨

📦 where this page comes from