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1OpenCores tiny SPI2 3Required properties:4- compatible : should be "opencores,tiny-spi-rtlsvn2".5- gpios : should specify GPIOs used for chipselect.6Optional properties:7- clock-frequency : input clock frequency to the core.8- baud-width: width, in bits, of the programmable divider used to scale9 the input clock to SCLK.10 11The clock-frequency and baud-width properties are needed only if the divider12is programmable. They are not needed if the divider is fixed.13