forked from Imagelibrary/rtems
With this, it is possible to use GPIOs as CS pins in the LPSPI. To avoid additional complexity, the GPIOs will have the same limitations as the native (hardware) CS pins. The GPIO CS feature adds a number of extra code when starting SPI transfers on this controller. Therefore it is possible to disable the additional code by just setting the IMXRT_LPSPI_MAX_CS option to 0. In that case only native CS pins are supported. At the moment, this feature is only enabled on i.MXRT1166 by default because it is not tested on i.MXRT1050. But it should work there too.