OMAP2_MCSPI_MODULCTRL
mcspi_write_reg(ctlr, OMAP2_MCSPI_MODULCTRL, ctx->modulctrl);
l = mcspi_read_reg(ctlr, OMAP2_MCSPI_MODULCTRL);
mcspi_write_reg(ctlr, OMAP2_MCSPI_MODULCTRL, l);