of_property_read_u32_index(9)

📦 version 7.3.1, in nixpkgs unstable

💖 NAME 💖

okay so this is of_property_read_u32_index(9) from the Kernel API Manual, and its whole job is to find and read a u32 from a multi-value property. that's it, that's the vibe. ✨

🦋 SYNOPSIS 🦋

int of_property_read_u32_index (const struct device_node *np , const
char *propname , u32 index , u32 *out_value );

🌸 ARGUMENTS 🌸

  • np — device node from which the property value is to be read.
  • propname — name of the property to be searched.
  • index — index of the u32 in the list of values.
  • out_value — pointer to return value, modified only if no error.

🎀 DESCRIPTION 🎀

picture this: you've got a device node, and you need the nth 32-bit value from one of its properties. this function searches for that property in the device node and reads the nth 32-bit value from it. 🔥

the out_value is modified only if a valid u32 value can be decoded. so if it's giving invalid, your pointer stays untouched. no cap. 💅

⭐ RETURN ⭐

  • 0 on success 🎉
  • -EINVAL if the property does not exist 🙈
  • -ENODATA if property does not have a value 😭
  • -EOVERFLOW if the property data isn't large enough 💀

🌈 SEE ALSO 🌈

Kernel file: ./drivers/of/property.c — that's the spot. and here's the whole bestie list:

and that's the whole page, bestie 🫶 — source/version ./drivers/of, dated October 2026, for of_property_read_u32_index(9). bye 💜

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