spi_register_board_info(9) centos man page | unix.com

SPI_REGISTER_BOARD_I(9) 				  Serial Peripheral Interface (S				   SPI_REGISTER_BOARD_I(9)

NAME
       spi_register_board_info - register SPI devices for a given board

SYNOPSIS
       int spi_register_board_info(struct spi_board_info const * info, unsigned n);

ARGUMENTS
       info
	   array of chip descriptors

       n
	   how many descriptors are provided

CONTEXT
       can sleep

DESCRIPTION
       Board-specific early init code calls this (probably during arch_initcall) with segments of the SPI device table. Any device nodes are
       created later, after the relevant parent SPI controller (bus_num) is defined. We keep this table of devices forever, so that reloading a
       controller driver will not make Linux forget about these hard-wired devices.

       Other code can also call this, e.g. a particular add-on board might provide SPI devices through its expansion connector, so code
       initializing that board would naturally declare its SPI devices.

       The board info passed can safely be __initdata ... but be careful of any embedded pointers (platform_data, etc), they're copied as-is.

COPYRIGHT
Kernel Hackers Manual 3.10					     June 2014						   SPI_REGISTER_BOARD_I(9)