- 'clock_polarity': ['Clock polarity', CPOL_0],
- 'clock_phase': ['Clock phase', CPHA_0],
- 'bit_order': ['Bit order within the SPI data', MSB_FIRST],
- 'word_size': ['Word size of SPI data', 8], # 1-64?
+ 'cpol': ['Clock polarity', CPOL_0],
+ 'cpha': ['Clock phase', CPHA_0],
+ 'bitorder': ['Bit order within the SPI data', MSB_FIRST],
+ 'wordsize': ['Word size of SPI data', 8], # 1-64?