* Freescale MX233/MX28 SSP/SPI Required properties: - compatible: Should be "fsl,<soc>-spi", where soc is "imx23" or "imx28" - reg: Offset and length of the register set for the device - interrupts: Should contain SSP ERROR interrupt - dmas: DMA specifier, consisting of a phandle to DMA controller node and SSP DMA channel ID. Refer to dma.txt and fsl-mxs-dma.txt for details. - dma-names: Must be "rx-tx". Optional properties: - clock-frequency : Input clock frequency to the SPI block in Hz. Default is 160000000 Hz. Example: ssp0: ssp@80010000 { #address-cells = <1>; #size-cells = <0>; compatible = "fsl,imx28-spi"; reg = <0x80010000 0x2000>; interrupts = <96>; dmas = <&dma_apbh 0>; dma-names = "rx-tx"; };