XWDLEN1
regs->xcr1 |= XWDLEN1(OMAP_MCBSP_WORD_16);
regs->xcr1 |= XWDLEN1(OMAP_MCBSP_WORD_32);
regs->xcr1 &= ~(XFRLEN1(0x7f) | XWDLEN1(7));