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在AM335x ARM® Cortex™-A8 Microprocessors technical reference manual找到如下：
如果想把SPI0_D0作为MOSI，而SP0_D1作为MISO，该如何设置呢？ 谢谢！
参考这里http://e2e.ti.com/support/embedded/linux/f/354/t/226665.aspx
修改了下，已经OK了.
l &= ~(OMAP2_MCSPI_CHCONF_DPE0); l
|= (OMAP2_MCSPI_CHCONF_IS|OMAP2_MCSPI_CHCONF_DPE1);
