my dm6446 has a spi interface, I use it as the spi master device. In my board, there is also a chip --mcp2510, which has also a spi interface. I use the mcp2510's spi as the slave device. In my project, I want to use the spidev, which is available since linux 2.6.18 kernel, to talk to the spi slave device in user space. I make this spidev device to list in the spi_board_info struct with field "chip_select = 0". when the spidev driver is registered, the spidev device is also added to the spi_bus. But when I want to register the mcp2510's spi driver, I find that this driver can not find the proper spi device to attach(The spi device registered in spi_bus is attached to the spidev drivers). How can I solve the problem? I think that whether I can also join the mcp_2510's spi into the spi_board_info struct array, so it can also be register as a device in spi_bus with the function "spi_register_board_info()". But when I do like it, how can I set the field "chip_select " of spi_board_info struct? My dm6446's spi interface is connected to mcp2510's spi by the chip_select signal--"EN0". I think that spi_master can't use EN0 to control two slave spi devices. How can i do it?
2009-07-06 邹卫军
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