U-Boot for Freescale i.MX31 This file contains information for the port of U-Boot to the Freescale i.MX31 SoC. 1. CONFIGURATION OPTIONS/SETTINGS --------------------------------- 1.1 Configuration of MC13783 SPI bus ------------------------------------ The power management companion chip MC13783 is connected to the i.MX31 via an SPI bus. Use the following configuration options to setup the bus and chip select used for a particular board. CONFIG_MC13783_SPI_BUS -- defines the SPI bus the MC13783 is connected to. Note that 0 is CSPI1, 1 is CSPI2 and 2 is CSPI3. CONFIG_MC13783_SPI_CS -- define the chip select the MC13783 s connected to.