On Fri, May 16, 2008 at 3:25 PM, Jon Smirl <jonsmirl@gmail.com> wrote:The *PSC3 device* cannot support both serial and SPI at the same time. Only one mode works at a time... However, *PSC3 pin group* has can be configured to route both the *PSC3 device* and the *SPI device* signal out to the board at the same time. Pin routing is not something that is described by the device tree. It's viewed as a board level initialization thing, similar to how DDR RAM initialization is viewed. Ideally, the bootloader will write the correct value into port_config for pin routing and Linux will never need to touch it. If the bootloader cannot be changed, then board-specific platform code can be added to fixup the port_config setting. However, the drivers should never touch or care about pin routing. Cheers, g. -- Grant Likely, B.Sc., P.Eng. Secret Lab Technologies Ltd. --
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