[诚心求教]cubietruck在调试spi驱动时出现的问题，求指导
本帖最后由 qiancuo 于 2015-7-29 09:30 编辑诸位大神好，我使用的是cubietruck板子，使用的是cubieez系统，在生成spidev2.0节点之后，我使用@jiangdou老师的spi测试程序（
https://github.com/jiangdoudou/l ... spi/spi-driver-test
）进行测试的时候发现spi接口的输出口全0，clk也没有起来。搞了两周了，实在是没有什么想法，诸位大神能指点一下吗？
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这是我的fex配置：
spi_used = 1
spi_cs_bitmap = 1
spi_cs0 = port:PB14<2><default><default><default>
spi_cs1 = port:PB13<2><default><default><default>
spi_sclk = port:PB15<2><default><default><default>
spi_mosi = port:PB16<2><default><default><default>
spi_miso = port:PB17<2><default><default><default>
spi_dev_num = 1
modalias = "spidev"
max_speed_hz = 12000000
bus_num = 2
chip_select = 0
mode = 3
full_duplex = 0
manual_cs = 0
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调用spi_test.c进行测试之后的打印信息：
root@cubietruck:/# ./spi -D /dev/spidev2.0
spi mode: 0
bits per word: 8
max speed: 500000 Hz (500 KHz)
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00 00 00 00 00
00 00
root@cubietruck:/# dmesg |grep spi
Found 1 spi devices in config files
boards num modalias max_spd_hz bus_numcs mode
spi_board0 irq gpio not used
0 spidev 12000000 2 0 0x3
sun7i_spi_probe: spi2 dma type: normal
bus num = 2, spi used = 1
sun7i_spi_probe: spi2 cs bitmap: 0x1
sun7i_spi_set_mclk: spi2 source = sdram_pll_p, src_clk = 432000000, mclk 86400000
sun7i-spi sun7i-spi.2: registered master spi2
sun7i-spi sun7i-spi.2: master is unqueued, this is deprecated
spi spi2.0: setup mode 3, 8 bits/w, 12000000 Hz max --> 0
sun7i-spi sun7i-spi.2: registered child spi2.0
sun7i_spi_probe: reuuimlla's SoC SPI Driver loaded for Bus SPI2 with 2 Slaves at most
sun7i_spi_probe: spi2 driver probe succeed, base f02a8000, irq 44, dma_id_rx 26, dma_id_tx 26
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板子上的连接方式如下：
就是把mosi和miso连接在了一起：
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