Function fdt_setprop 

pub unsafe extern "C" fn fdt_setprop(
    fdt: *mut c_void,
    nodeoffset: c_int,
    name: *const c_char,
    val: *const c_void,
    len: c_int,
) -> c_int

fdt_setprop - create or change a property @fdt: pointer to the device tree blob @nodeoffset: offset of the node whose property to change @name: name of the property to change @val: pointer to data to set the property value to @len: length of the property value

fdt_setprop() sets the value of the named property in the given node to the given value and length, creating the property if it does not already exist.

This function may insert or delete data from the blob, and will therefore change the offsets of some existing nodes.

returns: 0, on success -FDT_ERR_NOSPACE, there is insufficient free space in the blob to contain the new property value -FDT_ERR_BADOFFSET, nodeoffset did not point to FDT_BEGIN_NODE tag -FDT_ERR_BADLAYOUT, -FDT_ERR_BADMAGIC, -FDT_ERR_BADVERSION, -FDT_ERR_BADSTATE, -FDT_ERR_BADSTRUCTURE, -FDT_ERR_BADLAYOUT, -FDT_ERR_TRUNCATED, standard meanings