struct spi_board_info

gistfile1.txt

struct spi_board_info {
	/* the device name and module name are coupled, like platform_bus;
	 * "modalias" is normally the driver name.
	 *
	 * platform_data goes to spi_device.dev.platform_data,
	 * controller_data goes to spi_device.controller_data,
	 * irq is copied too
	 */
	char		modalias[SPI_NAME_SIZE];
	const void	*platform_data;
	void		*controller_data;
	int		irq;

	/* slower signaling on noisy or low voltage boards */
	u32		max_speed_hz;


	/* bus_num is board specific and matches the bus_num of some
	 * spi_master that will probably be registered later.
	 *
	 * chip_select reflects how this chip is wired to that master;
	 * it's less than num_chipselect.
	 */
	u16		bus_num;
	u16		chip_select;

	/* mode becomes spi_device.mode, and is essential for chips
	 * where the default of SPI_CS_HIGH = 0 is wrong.
	 */
	u8		mode;
};