thanks Philby very much! I have done according to your words,I cann't see the device node in /dev yet,and i mknod and create node /dev/spidev0, and now i can run my spidev_test.c, # insmod spidev.ko # mknod /dev/spi0 c 153 0 # ./spi_test & # spi mode: 3 bits peBUG: scheduling while atomic: spi_test/0x00000001/1062 r word: 8 max scaller is schedule+0xec/0x12c peed: 500000 Hz (500 KHz)
it seem some errors occur! 2009-06-23 zuowenping 发件人： Philby John 发送时间： 2009-06-23 14:51:50 收件人： zuowenping 抄送： davinci-linux-open-source 主题： Re: how can i use spi in dm355? zuowenping, You need to modify the arch/arm/mach-davinci/davinci_spi_platform.c struct spi_board_info dm6467_spi_board_info[], .modalias = DAVINCI_SPI_EEPROM_NAME, to .modalias = "spidev". Also you must enable CONFIG_SPI_SPIDEV. After that the kernel will detect the device as "spidev0" and that should get spidev_probe() to work. I think :) Regards, Philby On Tue, 2009-06-23 at 10:00 +0800, zuowenping wrote: > I have read the source code ,davinci_spi_board_init() must support > board info for the spidev driver ,just like the spi_eeprom example,but > i don't know how can i support the board info? i have insmod the > module spidev.ko,but i cann't prouduce the device > inode /dev/spi*.* ,so it must the spidev_probe() function cann't been > callback! > > > 2009-06-23 > > ______________________________________________________________________ > zuowenping > > ______________________________________________________________________ > 发件人： zuowenping > 发送时间： 2009-06-22 16:34:45 > 收件人： davinci-linux-open-source > 抄送： chris-meng > 主题： how can i use spi in dm355? > > dear all: > I am using mv_pro_4.0.1 in dm355 platform,now i want to use > spi0 and spi1 to communication with other devices which is like using > i2c open() , read() ,and write() to various device by sub address in > userspace. My linux kernel is 2.6.10,I have find the spidev.c and > spidev_test.c in linux2.6.30,So i have transplanted the spidev.c as a > module in linux kernel 2.6.10,but when i insmod the module,i cann't > find the needful device in /dev/ path,so i cann't run spidev_test.c to > test spi,I think there may be some errors in dm355 device driver,but i > don't know how to modify it? Any help will be appreciated! > > 2009-06-22 > > ______________________________________________________________________ > zuowenping > _______________________________________________ > Davinci-linux-open-source mailing list > Davinci-linux-open-source@linux.davincidsp.com > http://linux.davincidsp.com/mailman/listinfo/davinci-linux-open-source
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