spi驱动无法建立spidev问题

参考这里：

http://e2e.ti.com/support/arm/sitara_arm/f/791/t/168122.aspx

http://communistcode.co.uk/blog/blogPost.php?blogPostID=1

linuxkernelpsp/arch/arm/mach-omap2/board-am335xevm.c:

找到 vm_dev_cfg beaglebone_dev_cfg

加入

{spi1_init, DEV_ON_BASEBOARD, PROFILE_ALL},

找到 spi_board_info am335x_spi0_slave_info

把"m25p80" 改成spidev

static struct spi_board_info am335x_spi1_slave_info[] = {
	{
		.modalias      = "spidev",
		.platform_data = &am335x_spi_flash,
		.irq           = -1,
		.max_speed_hz  = 10000000,
		.bus_num       = 2,
		.chip_select   = 0,
		.mode = SPI_MODE_0,
	},
};